XLSB new records (fixes #3286 h/t @travisskyles)

- XLSX write dense mode null check (fixes #3261 h/t @mbornstein)
- Use `subarray` for Uint8Array/Buffer ops (h/t @hardonthebeat)

.gitignore

@@ -39,3 +39,5 @@ tmp
 *.sheetjs
 *.exe
 *.img
+test_files.zip
+test_files/

.gitmodules

@@ -1,4 +0,0 @@
-[submodule "test_files"]
-	path = test_files
-	url = https://github.com/SheetJS/test_files
-	ignore = dirty

CHANGELOG.md

@@ -4,8 +4,23 @@ This log is intended to keep track of backwards-incompatible changes, including
 but not limited to API changes and file location changes.  Minor behavioral
 changes may not be included if they are not expected to break existing code.
 
+* Sheet Visibility for ODS / FODS (h/t @edemaine)
+* HTML DOM ingress support formulae (`data-f`)
+* Proper handling of XLSX encoded entities (h/t @inreoh)
+* Proper handling of invalid DIF sheets that match heuristics (h/t @lowkeyfish)
+
+## v0.20.3
+
+* Correct parsing of NUMBERS and ODS merge cells (h/t @s-ashwin)
+* More precise treatment of infinite and NaN values
+* XLML Streaming Write
+* Parse `Int8Array` objects (for compatibility with JS engines in Java)
+* CSV Export only quote leading ID (h/t @lako12)
+
 ## v0.20.2
 
+* Reworked parsing methods to avoid slow regexes (CVE-2024-22363)
+* HTML properly encode data-v attribute
 * SYLK read and write error cells
 
 ## v0.20.1

CONTRIBUTING.md

@@ -1,70 +1,74 @@
 # Contributing
 
-The SheetJS Libraries should be free and clear to use in your projects.  In
-order to maintain that, every contributor must be vigilant.
+SheetJS CE should be free and clear to use in your projects. To ensure that
+remains true, each contributor must be vigilant and each contribution must be
+carefully scrutinized from a technical and legal perspective.
 
-There have been many projects in the past that have been very lax regarding
-licensing, and we are of the opinion that those are ticking timebombs and that
-no commercial product should depend on them.
+Many commercial products and open source projects have been very lax regarding
+licensing. They are ticking timebombs that no commercial product should use.
 
 
-# Required Reading
+## Required Reading
 
 These are pretty short reads and emphasize the importance of proper licensing:
 
-- https://github.com/kennethreitz/tablib/issues/114 (discussion of other tools)
+- https://web.archive.org/web/20200916173942/https://github.com/jazzband/tablib/issues/114
 
-- http://www.codinghorror.com/blog/2007/04/pick-a-license-any-license.html
+- https://web.archive.org/web/20240909210554/https://github.com/stephen-hardy/xlsx.js/issues/8
 
 
-# Raising Issues
+## Raising Issues
 
-Issues should generally be accompanied by test files.  Since github does not
-support attachments, the best method is to send files to <sheetjs@gmail.com>
-(subject line should contain issue number or message) or to share using some
-storage service.  Unless expressly permitted, any attachments will not be
-shared or included in a test suite (although I will ask :)
+Issues should generally be accompanied by test files. It is strongly recommended
+to use the [issue tracker](https://git.sheetjs.com/sheetjs/sheetjs/issues).
 
-If sending email to a gmail account is problematic, the <dev@sheetjs.com> email
-inbox is self-hosted.
+If they cannot be shared publicly, please send files to <oss@sheetjs.com>
+(subject line should contain issue number or message) or share links to files
+hosted on a storage service. Unless expressly permitted, attachments will not be
+shared outside of SheetJS LLC or included in a test suite.
 
-# Opening Pull Requests
+If a NDA is required, please send an email to <oss@sheetjs.com> with subject
+line "Non-Disclosure Agreemeant Request".
 
-Before opening a pull request, [squash all commits into 
-one](https://git-scm.com/book/en/v2/Git-Tools-Rewriting-History). If the pull 
-request addresses documentation or demos, add `[ci skip]` in the body or title 
-of your commit message to skip Travis checks.
 
-# Pre-Contribution Checklist
+## Opening Pull Requests
+
+Please raise an issue before opening pull requests. It is easy to solve a
+specific problem without considering the full context or implications.
+
+
+## Pre-Contribution Checklist
 
 Before thinking about contributing, make sure that:
 
 - You are not, nor have ever been, an employee of Microsoft Corporation.
 
 - You have not signed any NDAs or Shared Source Agreements with Microsoft
-  Corporation or a subsidiary
+  Corporation or a subsidiary.
 
 - You have not consulted any existing relevant codebase (if you have, please
   take note of which codebases were consulted).
 
 If you cannot attest to each of these items, the best approach is to raise an
-issue.  If it is a particularly high-priority issue, please drop an email to
-<sheetjs@gmail.com> and it will be prioritized.
+issue. If it is a particularly high-priority issue, please drop an email to
+<support@sheetjs.com> and it will be prioritized.
 
 
-# Intra-Contribution
+## Intra-Contribution
 
 Keep these in mind as you work:
 
-- Your contributions are your original work.  Take note of any resources you
-  consult in the process (and be extra careful not to use unlicensed code on
-  the internet.
+- Your contributions are your original work. Take note of any resources you
+  consult in the process. Be extra careful not to use unlicensed code on the
+  Internet or code generated by a large language model or other AI tool.
 
-- You are working on your own time.  Unless they explicitly grant permission,
+- You are working on your own time. Unless they explicitly grant permission,
   your employer may be the ultimate owner of your IP
 
-# Post-Contribution
 
-Before contributions are merged, you will receive an email (at the address
-associated with the git commit) and will be asked to confirm the aforementioned
-items.  Ensure that the email addresses associated with the commits are valid.
+## Post-Contribution
+
+Before certain contributions are merged, you will receive an email (at the
+address associated with the git commit) and will be asked to confirm the
+aforementioned items. Ensure that the email addresses associated with the
+commits are valid.

Makefile

@@ -152,8 +152,8 @@ test.ts: test.mts
 	node -pe 'var data = fs.readFileSync("'$<'", "utf8"); data.split("\n").map(function(l) { return l.replace(/^describe\((.*?)function\(\)/, "Deno.test($$1async function(t)").replace(/\b(?:it|describe)\((.*?)function\(\)/g, "await t.step($$1async function(t)").replace("assert.ok", "assert.assert"); }).join("\n")' > $@
 
 .PHONY: test-bun
-test-bun: testbun.mjs ## Run Bun test suite
-	bun $<
+test-bun: test.test.mjs ## Run Bun test suite
+	bun test $<
 
 .PHONY: test-deno
 test-deno: test.ts ## Run Deno test suite

README.md

@@ -31,9 +31,6 @@ encodings for XLS and other legacy spreadsheet formats
 
 - [`dta`](packages/dta): Stata DTA file processor
 
-- [`test_files`](https://github.com/sheetjs/test_files): Test files and various
-plaintext baselines.
-
 ## License
 
 Please consult the attached LICENSE file for details.  All rights not explicitly

bin/xlsx.njs

@@ -2,6 +2,7 @@
 /* xlsx.js (C) 2013-present  SheetJS -- http://sheetjs.com */
 /* eslint-env node */
 /* vim: set ts=2 ft=javascript: */
+
 var n = "xlsx";
 var X = require('../');
 try { X = require('../xlsx.flow'); } catch(e) {}
@@ -17,7 +18,7 @@ try { program = require('commander'); } catch(e) {
 		"For older versions of node, explicitly install `xlsx-cli` globally:",
 		"    $ npm i -g xlsx-cli",
 		"    $ xlsx-cli --help"
-	].forEach(function(m) { console.error(m); });
+	].forEach(function (m) { console.error(m); });
 	process.exit(1);
 }
 program
@@ -65,9 +66,10 @@ program
 	.option('-F, --field-sep <sep>', 'CSV field separator', ",")
 	.option('-R, --row-sep <sep>', 'CSV row separator', "\n")
 	.option('-n, --sheet-rows <num>', 'Number of rows to process (0=all rows)')
+	.option('--date-format <string>', 'output date format, for example yyyy-mm-dd')
 	.option('--codepage <cp>', 'default to specified codepage when ambiguous')
-	.option('--req <module>', 'require module before processing')
 	.option('--sst', 'generate shared string table for XLS* formats')
+	.option('-d, --no-dim', 'recalculate worksheet range')
 	.option('--compress', 'use compression when writing XLSX/M/B and ODS')
 	.option('--read', 'read but do not generate output')
 	.option('--book', 'for single-sheet formats, emit a file per worksheet')
@@ -102,18 +104,18 @@ var wb_formats_2 = [
 program.parse(process.argv);
 
 var filename = '', sheetname = '';
-if(program.args[0]) {
+if (program.args[0]) {
 	filename = program.args[0];
-	if(program.args[1]) sheetname = program.args[1];
+	if (program.args[1]) sheetname = program.args[1];
 }
-if(program.sheet) sheetname = program.sheet;
-if(program.file) filename = program.file;
+if (program.sheet) sheetname = program.sheet;
+if (program.file) filename = program.file;
 
-if(!filename) {
+if (!filename) {
 	console.error(n + ": must specify a filename");
 	process.exit(1);
 }
-if(!fs.existsSync(filename)) {
+if (!fs.existsSync(filename)) {
 	console.error(n + ": " + filename + ": No such file or directory");
 	process.exit(2);
 }
@@ -209,15 +211,15 @@ wb_formats_2.forEach(function(m) { if(program[m[0]] || isfmt(m[0])) {
 } });
 
 var target_sheet = sheetname || '';
-if(target_sheet === '') {
-	if(+program.sheetIndex < (wb.SheetNames||[]).length) target_sheet = wb.SheetNames[+program.sheetIndex];
-	else target_sheet = (wb.SheetNames||[""])[0];
+if (target_sheet === '') {
+	if (+program.sheetIndex < (wb.SheetNames || []).length) target_sheet = wb.SheetNames[+program.sheetIndex];
+	else target_sheet = (wb.SheetNames || [""])[0];
 }
 
 var ws;
 try {
 	ws = wb.Sheets[target_sheet];
-	if(!ws) {
+	if (!ws) {
 		console.error("Sheet " + target_sheet + " cannot be found");
 		process.exit(3);
 	}
@@ -226,7 +228,7 @@ try {
 	process.exit(4);
 }
 
-if(!program.quiet && !program.book) console.error(target_sheet);
+if (!program.quiet && !program.book) console.error(target_sheet);
 
 /* single worksheet file formats */
 [
@@ -254,21 +256,21 @@ if(!program.quiet && !program.book) console.error(target_sheet);
 	process.exit(0);
 } });
 
-function outit(o, fn) { if(fn) fs.writeFileSync(fn, o); else console.log(o); }
+function outit(o, fn) { if (fn) fs.writeFileSync(fn, o); else console.log(o); }
 
 function doit(cb) {
-	/*:: if(!wb) throw new Error("unreachable"); */
-	if(program.book) wb.SheetNames.forEach(function(n, i) {
-		/*:: if(!wb) throw new Error("unreachable"); */
+	/*:: if (!wb) throw new Error("unreachable"); */
+	if (program.book) wb.SheetNames.forEach(function (n, i) {
+		/*:: if (!wb) throw new Error("unreachable"); */
 		outit(cb(wb.Sheets[n]), (program.output || sheetname || filename) + "." + i);
 	});
 	else outit(cb(ws), program.output);
 }
 
 var jso = {};
-switch(true) {
+switch (true) {
 	case program.formulae:
-		doit(function(ws) { return X.utils.sheet_to_formulae(ws).join("\n"); });
+		doit(function (ws) { return X.utils.sheet_to_formulae(ws).join("\n"); });
 		break;
 
 	case program.arrays: jso.header = 1;
@@ -276,33 +278,33 @@ switch(true) {
 	case program.rawJs: jso.raw = true;
 	/* falls through */
 	case program.json:
-		doit(function(ws) { return JSON.stringify(X.utils.sheet_to_json(ws,jso)); });
+		doit(function (ws) { return JSON.stringify(X.utils.sheet_to_json(ws, jso)); });
 		break;
 
 	default:
-		if(!program.book) {
-			var stream = X.stream.to_csv(ws, {FS:program.fieldSep||",", RS:program.rowSep||"\n"});
-			if(program.output) stream.pipe(fs.createWriteStream(program.output));
+		if (!program.book) {
+			var stream = X.stream.to_csv(ws, { FS: program.fieldSep || ",", RS: program.rowSep || "\n" });
+			if (program.output) stream.pipe(fs.createWriteStream(program.output));
 			else stream.pipe(process.stdout);
-		} else doit(function(ws) { return X.utils.sheet_to_csv(ws,{FS:program.fieldSep, RS:program.rowSep}); });
+		} else doit(function (ws) { return X.utils.sheet_to_csv(ws, { FS: program.fieldSep, RS: program.rowSep }); });
 		break;
 }
 
 function dump_props(wb/*:Workbook*/) {
 	var propaoa = [];
-	if(Object.assign && Object.entries) propaoa = Object.entries(Object.assign({}, wb.Props, wb.Custprops));
+	if (Object.assign && Object.entries) propaoa = Object.entries(Object.assign({}, wb.Props, wb.Custprops));
 	else {
 		var Keys/*:: :Array<string> = []*/, pi;
-		if(wb.Props) {
+		if (wb.Props) {
 			Keys = Object.keys(wb.Props);
-			for(pi = 0; pi < Keys.length; ++pi) {
-				if(Object.prototype.hasOwnProperty.call(Keys, Keys[pi])) propaoa.push([Keys[pi], Keys[/*::+*/Keys[pi]]]);
+			for (pi = 0; pi < Keys.length; ++pi) {
+				if (Object.prototype.hasOwnProperty.call(Keys, Keys[pi])) propaoa.push([Keys[pi], Keys[/*::+*/Keys[pi]]]);
 			}
 		}
-		if(wb.Custprops) {
+		if (wb.Custprops) {
 			Keys = Object.keys(wb.Custprops);
-			for(pi = 0; pi < Keys.length; ++pi) {
-				if(Object.prototype.hasOwnProperty.call(Keys, Keys[pi])) propaoa.push([Keys[pi], Keys[/*::+*/Keys[pi]]]);
+			for (pi = 0; pi < Keys.length; ++pi) {
+				if (Object.prototype.hasOwnProperty.call(Keys, Keys[pi])) propaoa.push([Keys[pi], Keys[/*::+*/Keys[pi]]]);
 			}
 		}
 	}

bits/01_version.js

@@ -1 +1 @@
-XLSX.version = '0.20.1';
+XLSX.version = '0.20.3';

bits/10_ssf.js

@@ -243,6 +243,7 @@ function SSF_large_exp(v/*:number*/)/*:string*/ {
 }
 
 function SSF_general_num(v/*:number*/)/*:string*/ {
+	if(!isFinite(v)) return isNaN(v) ? "#NUM!" : "#DIV/0!";
 	var V = Math.floor(Math.log(Math.abs(v))*Math.LOG10E), o;
 
 	if(V >= -4 && V <= -1) o = v.toPrecision(10+V);
@@ -408,7 +409,7 @@ function write_num_f2(r/*:Array<string>*/, aval/*:number*/, sign/*:string*/)/*:s
 	return sign + (aval === 0 ? "" : ""+aval) + fill(" ", r[1].length + 2 + r[4].length);
 }
 var dec1 = /^#*0*\.([0#]+)/;
-var closeparen = /\).*[0#]/;
+var closeparen = /\)[^)]*[0#]/;
 var phone = /\(###\) ###\\?-####/;
 function hashq(str/*:string*/)/*:string*/ {
 	var o = "", cc;
@@ -420,7 +421,11 @@ function hashq(str/*:string*/)/*:string*/ {
 	}
 	return o;
 }
-function rnd(val/*:number*/, d/*:number*/)/*:string*/ { var dd = Math.pow(10,d); return ""+(Math.round(val * dd)/dd); }
+function rnd(val/*:number*/, d/*:number*/)/*:string*/ {
+	var sgn = val < 0 ? -1 : 1;
+	var dd = Math.pow(10,d);
+	return ""+sgn*(Math.round(sgn * val * dd)/dd);
+}
 function dec(val/*:number*/, d/*:number*/)/*:number*/ {
 	var _frac = val - Math.floor(val), dd = Math.pow(10,d);
 	if (d < ('' + Math.round(_frac * dd)).length) return 0;
@@ -940,6 +945,8 @@ function choose_fmt(f/*:string*/, v/*:any*/) {
 	if(l<4 && lat>-1) --l;
 	if(fmt.length > 4) throw new Error("cannot find right format for |" + fmt.join("|") + "|");
 	if(typeof v !== "number") return [4, fmt.length === 4 || lat>-1?fmt[fmt.length-1]:"@"];
+	/* NOTE: most spreadsheet software do not support NaN or infinities */
+	if(typeof v === "number" && !isFinite(v)) v = 0;
 	switch(fmt.length) {
 		case 1: fmt = lat>-1 ? ["General", "General", "General", fmt[0]] : [fmt[0], fmt[0], fmt[0], "@"]; break;
 		case 2: fmt = lat>-1 ? [fmt[0], fmt[0], fmt[0], fmt[1]] : [fmt[0], fmt[1], fmt[0], "@"]; break;
@@ -976,6 +983,8 @@ function SSF_format(fmt/*:string|number*/,v/*:any*/,o/*:?any*/) {
 	if(SSF_isgeneral(f[1])) return SSF_general(v, o);
 	if(v === true) v = "TRUE"; else if(v === false) v = "FALSE";
 	else if(v === "" || v == null) return "";
+	else if(isNaN(v) && f[1].indexOf("0") > -1) return "#NUM!";
+	else if(!isFinite(v) && f[1].indexOf("0") > -1) return "#DIV/0!";
 	return eval_fmt(f[1], v, o, f[0]);
 }
 function SSF_load(fmt/*:string*/, idx/*:?number*/)/*:number*/ {

bits/18_cfb.js

@@ -42,7 +42,9 @@ type CFBFiles = {[n:string]:CFBEntry};
 var CRC32 = /*#__PURE__*/(function() {
 var CRC32 = {};
 CRC32.version = '1.2.0';
-/* see perf/crc32table.js */
+/*::
+type CRC32TableType = Array<number> | Int32Array;
+*/
 /*global Int32Array */
 function signed_crc_table()/*:any*/ {
 	var c = 0, table/*:Array<number>*/ = new Array(256);
@@ -80,7 +82,7 @@ var TT = slice_by_16_tables(T0);
 var T1 = TT[0],  T2 = TT[1],  T3 = TT[2],  T4 = TT[3],  T5 = TT[4];
 var T6 = TT[5],  T7 = TT[6],  T8 = TT[7],  T9 = TT[8],  Ta = TT[9];
 var Tb = TT[10], Tc = TT[11], Td = TT[12], Te = TT[13], Tf = TT[14];
-function crc32_bstr(bstr/*:string*/, seed/*:number*/)/*:number*/ {
+function crc32_bstr(bstr/*:string*/, seed/*:?number*/)/*:number*/ {
 	var C = seed/*:: ? 0 : 0 */ ^ -1;
 	for(var i = 0, L = bstr.length; i < L;) C = (C>>>8) ^ T0[(C^bstr.charCodeAt(i++))&0xFF];
 	return ~C;
@@ -1446,8 +1448,8 @@ function parse_local_file(blob/*:CFBlob*/, csz/*:number*/, usz/*:number*/, o/*:C
 		if((ef[0x0001]||{}).csz) _csz = ef[0x0001].csz;
 		if(EF) {
 			if((EF[0x5455]||{}).mt) date = EF[0x5455].mt;
-			if((EF[0x0001]||{}).usz) _usz = ef[0x0001].usz;
-			if((EF[0x0001]||{}).csz) _csz = ef[0x0001].csz;
+			if((EF[0x0001]||{}).usz) _usz = EF[0x0001].usz;
+			if((EF[0x0001]||{}).csz) _csz = EF[0x0001].csz;
 		}
 	}
 	blob.l += efsz;
@@ -1458,7 +1460,7 @@ function parse_local_file(blob/*:CFBlob*/, csz/*:number*/, usz/*:number*/, o/*:C
 	var data = blob.slice(blob.l, blob.l + _csz);
 	switch(meth) {
 		case 8: data = _inflateRawSync(blob, _usz); break;
-		case 0: break; // TODO: scan for magic number
+		case 0: blob.l += _csz; break; // TODO: scan for magic number
 		default: throw new Error("Unsupported ZIP Compression method " + meth);
 	}
 
@@ -1493,9 +1495,10 @@ function write_zip(cfb/*:CFBContainer*/, options/*:CFBWriteOpts*/)/*:RawBytes*/
 
 	for(i = 1; i < cfb.FullPaths.length; ++i) {
 		fp = cfb.FullPaths[i].slice(root.length); fi = cfb.FileIndex[i];
-		if(!fi.size || !fi.content || fp == "\u0001Sh33tJ5") continue;
+		if(!fi.size || !fi.content || (Array.isArray(fi.content) && fi.content.length == 0) || fp == "\u0001Sh33tJ5") continue;
 		var start = start_cd;
 
+
 		/* TODO: CP437 filename */
 		var namebuf = new_buf(fp.length);
 		for(j = 0; j < fp.length; ++j) namebuf.write_shift(1, fp.charCodeAt(j) & 0x7F);
@@ -1683,7 +1686,7 @@ function parse_mime(cfb/*:CFBContainer*/, data/*:Array<string>*/, root/*:string*
 	for(;di < 10; ++di) {
 		var line = data[di];
 		if(!line || line.match(/^\s*$/)) break;
-		var m = line.match(/^(.*?):\s*([^\s].*)$/);
+		var m = line.match(/^([^:]*?):\s*([^\s].*)$/);
 		if(m) switch(m[1].toLowerCase()) {
 			case "content-location": fname = m[2].trim(); break;
 			case "content-type": ctype = m[2].trim(); break;

bits/20_jsutils.js

@@ -87,7 +87,7 @@ function parseDate(str/*:string*/, date1904/*:boolean*/)/*:Date*/ {
 	if(m) return new Date(Date.UTC(+m[1], +m[2]-1, +m[3], 0, 0, 0, 0));
 	/* TODO: 1900-02-29T00:00:00.000 should return a flag to treat as a date code (affects xlml) */
 	m = str.match(pdre3);
-	if(m) return new Date(Date.UTC(+m[1], +m[2]-1, +m[3], +m[4], +m[5], ((m[6] && parseInt(m[6].slice(1), 10))|| 0), ((m[7] && parseInt(m[7].slice(1), 10))||0)));
+	if(m) return new Date(Date.UTC(+m[1], +m[2]-1, +m[3], +m[4], +m[5], ((m[6] && parseInt(m[6].slice(1), 10))|| 0), ((m[7] && parseInt((m[7] + "0000").slice(1,4), 10))||0)));
 	var d = new Date(str);
 	return d;
 }
@@ -154,7 +154,7 @@ function fuzzynum(s/*:string*/)/*:number*/ {
 	var wt = 1;
 	var ss = s.replace(/([\d]),([\d])/g,"$1$2").replace(/[$]/g,"").replace(/[%]/g, function() { wt *= 100; return "";});
 	if(!isNaN(v = Number(ss))) return v / wt;
-	ss = ss.replace(/[(](.*)[)]/,function($$, $1) { wt = -wt; return $1;});
+	ss = ss.replace(/[(]([^()]*)[)]/,function($$, $1) { wt = -wt; return $1;});
 	if(!isNaN(v = Number(ss))) return v / wt;
 	return v;
 }
@@ -224,6 +224,15 @@ function local_to_utc(local) {
 	return new Date(Date.UTC(local.getFullYear(), local.getMonth(), local.getDate(), local.getHours(), local.getMinutes(), local.getSeconds(), local.getMilliseconds()));
 }
 
+function remove_doctype(str) {
+	var preamble = str.slice(0, 1024);
+	var si = preamble.indexOf("<!DOCTYPE");
+	if(si == -1) return str;
+	var m = str.match(/<[\w]/);
+	if(!m) return str;
+	return str.slice(0, si) + str.slice(m.index);
+}
+
 /* str.match(/<!--[\s\S]*?-->/g) --> str_match_ng(str, "<!--", "-->") */
 function str_match_ng(str, s, e) {
   var out = [];
@@ -257,11 +266,13 @@ function str_remove_ng(str, s, e) {
   return out.join("");
 }
 
-/* str.match(/<tag[^>]*?>([\s\S]*?)</tag>/) --> str_match_xml(str, "tag") */
+/* str.match(/<tag\b[^>]*?>([\s\S]*?)</tag>/) --> str_match_xml(str, "tag") */
+var xml_boundary = { " ": 1, "\t": 1, "\r": 1, "\n": 1, ">": 1 };
 function str_match_xml(str, tag) {
-	var si = str.indexOf('<' + tag);
+	var si = str.indexOf('<' + tag), w = tag.length + 1, L = str.length;
+	while(si >= 0 && si <= L - w && !xml_boundary[str.charAt(si + w)]) si = str.indexOf('<' + tag, si+1);
 	if(si === -1) return null;
-	var sf = str.indexOf(">", si);
+	var sf = str.indexOf(">", si + tag.length);
 	if(sf === -1) return null;
 	var et = "</" + tag + ">";
 	var ei = str.indexOf(et, sf);
@@ -269,12 +280,13 @@ function str_match_xml(str, tag) {
 	return [str.slice(si, ei + et.length), str.slice(sf + 1, ei)];
 }
 
+/* str.match(/<(?:\w+:)?tag\b[^<>]*?>([\s\S]*?)<\/(?:\w+:)?tag>/) --> str_match_xml(str, "tag") */
 var str_match_xml_ns = /*#__PURE__*/(function() {
 	var str_match_xml_ns_cache = {};
 	return function str_match_xml_ns(str, tag) {
 		var res = str_match_xml_ns_cache[tag];
 		if(!res) str_match_xml_ns_cache[tag] = res = [
-			new RegExp('<(?:\\w+:)?'+tag+'[^>]*>', "g"),
+			new RegExp('<(?:\\w+:)?'+tag+'\\b[^<>]*>', "g"),
 			new RegExp('</(?:\\w+:)?'+tag+'>', "g")
 		];
 		res[0].lastIndex = res[1].lastIndex = 0;
@@ -291,24 +303,74 @@ var str_match_xml_ns = /*#__PURE__*/(function() {
 	};
 })();
 
+/* str.match(/<(?:\w+:)?tag\b[^<>]*?>([\s\S]*?)<\/(?:\w+:)?tag>/g) --> str_match_xml_ns_g(str, "tag") */
 var str_match_xml_ns_g = /*#__PURE__*/(function() {
 	var str_match_xml_ns_cache = {};
 	return function str_match_xml_ns(str, tag) {
 		var out = [];
 		var res = str_match_xml_ns_cache[tag];
 		if(!res) str_match_xml_ns_cache[tag] = res = [
-			new RegExp('<(?:\\w+:)?'+tag+'[^>]*>', "g"),
+			new RegExp('<(?:\\w+:)?'+tag+'\\b[^<>]*>', "g"),
 			new RegExp('</(?:\\w+:)?'+tag+'>', "g")
 		];
 		res[0].lastIndex = res[1].lastIndex = 0;
 		var m;
 		while((m = res[0].exec(str))) {
 			var si = m.index;
-			var sf = res[0].lastIndex;
 			res[1].lastIndex = res[0].lastIndex;
 			m = res[1].exec(str);
 			if(!m) return null;
-			var ei = m.index;
+			var ef = res[1].lastIndex;
+			out.push(str.slice(si, ef));
+			res[0].lastIndex = res[1].lastIndex;
+		}
+		return out.length == 0 ? null : out;
+	};
+})();
+var str_remove_xml_ns_g = /*#__PURE__*/(function() {
+	var str_remove_xml_ns_cache = {};
+	return function str_remove_xml_ns_g(str, tag) {
+		var out = [];
+		var res = str_remove_xml_ns_cache[tag];
+		if(!res) str_remove_xml_ns_cache[tag] = res = [
+			new RegExp('<(?:\\w+:)?'+tag+'\\b[^<>]*>', "g"),
+			new RegExp('</(?:\\w+:)?'+tag+'>', "g")
+		];
+		res[0].lastIndex = res[1].lastIndex = 0;
+		var m;
+		var si = 0, ef = 0;
+		while((m = res[0].exec(str))) {
+			si = m.index;
+			out.push(str.slice(ef, si));
+			ef = si;
+			res[1].lastIndex = res[0].lastIndex;
+			m = res[1].exec(str);
+			if(!m) return null;
+			ef = res[1].lastIndex;
+			res[0].lastIndex = res[1].lastIndex;
+		}
+		out.push(str.slice(ef));
+		return out.length == 0 ? "" : out.join("");
+	};
+})();
+
+/* str.match(/<(?:\w+:)?tag\b[^>]*?>([\s\S]*?)<\/(?:\w+:)?tag>/gi) --> str_match_xml_ns_ig(str, "tag") */
+var str_match_xml_ig = /*#__PURE__*/(function() {
+	var str_match_xml_ns_cache = {};
+	return function str_match_xml_ns(str, tag) {
+		var out = [];
+		var res = str_match_xml_ns_cache[tag];
+		if(!res) str_match_xml_ns_cache[tag] = res = [
+			new RegExp('<'+tag+'\\b[^<>]*>', "ig"),
+			new RegExp('</'+tag+'>', "ig")
+		];
+		res[0].lastIndex = res[1].lastIndex = 0;
+		var m;
+		while((m = res[0].exec(str))) {
+			var si = m.index;
+			res[1].lastIndex = res[0].lastIndex;
+			m = res[1].exec(str);
+			if(!m) return null;
 			var ef = res[1].lastIndex;
 			out.push(str.slice(si, ef));
 			res[0].lastIndex = res[1].lastIndex;

bits/21_ziputils.js

@@ -67,6 +67,9 @@ function zipentries(zip) {
 
 function zip_add_file(zip, path, content) {
 	if(zip.FullPaths) {
+		if(Array.isArray(content) && typeof content[0] == "string") {
+			content = content.join("");
+		}
 		if(typeof content == "string") {
 			var res;
 			if(has_buf) res = Buffer_from(content);

bits/22_xmlutils.js

@@ -1,6 +1,6 @@
 var XML_HEADER = '<?xml version="1.0" encoding="UTF-8" standalone="yes"?>\r\n';
-var attregexg=/([^"\s?>\/]+)\s*=\s*((?:")([^"]*)(?:")|(?:')([^']*)(?:')|([^'">\s]+))/g;
-var tagregex1=/<[\/\?]?[a-zA-Z0-9:_-]+(?:\s+[^"\s?>\/]+\s*=\s*(?:"[^"]*"|'[^']*'|[^'">\s=]+))*\s*[\/\?]?>/mg, tagregex2 = /<[^>]*>/g;
+var attregexg=/\s([^"\s?>\/]+)\s*=\s*((?:")([^"]*)(?:")|(?:')([^']*)(?:')|([^'">\s]+))/g;
+var tagregex1=/<[\/\?]?[a-zA-Z0-9:_-]+(?:\s+[^"\s?<>\/]+\s*=\s*(?:"[^"]*"|'[^']*'|[^'"<>\s=]+))*\s*[\/\?]?>/mg, tagregex2 = /<[^<>]*>/g;
 var tagregex = /*#__PURE__*/XML_HEADER.match(tagregex1) ? tagregex1 : tagregex2;
 var nsregex=/<\w*:/, nsregex2 = /<(\/?)\w+:/;
 function parsexmltag(tag/*:string*/, skip_root/*:?boolean*/, skip_LC/*:?boolean*/)/*:any*/ {
@@ -11,7 +11,7 @@ function parsexmltag(tag/*:string*/, skip_root/*:?boolean*/, skip_LC/*:?boolean*
 	if(eq === tag.length) return z;
 	var m = tag.match(attregexg), j=0, v="", i=0, q="", cc="", quot = 1;
 	if(m) for(i = 0; i != m.length; ++i) {
-		cc = m[i];
+		cc = m[i].slice(1);
 		for(c=0; c != cc.length; ++c) if(cc.charCodeAt(c) === 61) break;
 		q = cc.slice(0,c).trim();
 		while(cc.charCodeAt(c+1) == 32) ++c;
@@ -32,6 +32,26 @@ function parsexmltag(tag/*:string*/, skip_root/*:?boolean*/, skip_LC/*:?boolean*
 	}
 	return z;
 }
+function parsexmltagraw(tag/*:string*/, skip_root/*:?boolean*/, skip_LC/*:?boolean*/)/*:any*/ {
+	var z = ({}/*:any*/);
+	var eq = 0, c = 0;
+	for(; eq !== tag.length; ++eq) if((c = tag.charCodeAt(eq)) === 32 || c === 10 || c === 13) break;
+	if(!skip_root) z[0] = tag.slice(0, eq);
+	if(eq === tag.length) return z;
+	var m = tag.match(attregexg), j=0, v="", i=0, q="", cc="", quot = 1;
+	if(m) for(i = 0; i != m.length; ++i) {
+		cc = m[i].slice(1);
+		for(c=0; c != cc.length; ++c) if(cc.charCodeAt(c) === 61) break;
+		q = cc.slice(0,c).trim();
+		while(cc.charCodeAt(c+1) == 32) ++c;
+		quot = ((eq=cc.charCodeAt(c+1)) == 34 || eq == 39) ? 1 : 0;
+		v = cc.slice(c+1+quot, cc.length-quot);
+		if(q.indexOf("_") > 0) q = q.slice(0, q.indexOf("_")); // from ods
+		z[q] = v;
+		if(!skip_LC) z[q.toLowerCase()] = v;
+	}
+	return z;
+}
 function strip_ns(x/*:string*/)/*:string*/ { return x.replace(nsregex2, "<$1"); }
 
 var encodings = {
@@ -47,7 +67,7 @@ var rencoding = /*#__PURE__*/evert(encodings);
 // TODO: CP remap (need to read file version to determine OS)
 var unescapexml/*:StringConv*/ = /*#__PURE__*/(function() {
 	/* 22.4.2.4 bstr (Basic String) */
-	var encregex = /&(?:quot|apos|gt|lt|amp|#x?([\da-fA-F]+));/ig, coderegex = /_x([\da-fA-F]{4})_/ig;
+	var encregex = /&(?:quot|apos|gt|lt|amp|#x?([\da-fA-F]+));/ig, coderegex = /_x([\da-fA-F]{4})_/g;
 	function raw_unescapexml(text/*:string*/)/*:string*/ {
 		var s = text + '', i = s.indexOf("<![CDATA[");
 		if(i == -1) return s.replace(encregex, function($$, $1) { return encodings[$$]||String.fromCharCode(parseInt($1,$$.indexOf("x")>-1?16:10))||$$; }).replace(coderegex,function(m,c) {return String.fromCharCode(parseInt(c,16));});
@@ -133,7 +153,13 @@ function utf8readb(data) {
 function utf8readc(data) { return Buffer_from(data, 'binary').toString('utf8'); }
 
 var utf8corpus = "foo bar baz\u00e2\u0098\u0083\u00f0\u009f\u008d\u00a3";
-var utf8read = has_buf && (/*#__PURE__*/utf8readc(utf8corpus) == /*#__PURE__*/utf8reada(utf8corpus) && utf8readc || /*#__PURE__*/utf8readb(utf8corpus) == /*#__PURE__*/utf8reada(utf8corpus) && utf8readb) || utf8reada;
+var utf8read = /*#__PURE__*/(function() {
+  if(has_buf) {
+    if(utf8readc(utf8corpus) == utf8reada(utf8corpus)) return utf8readc;
+    if(utf8readb(utf8corpus) == utf8reada(utf8corpus)) return utf8readb;
+  }
+  return utf8reada;
+})();
 
 var utf8write/*:StringConv*/ = has_buf ? function(data) { return Buffer_from(data, 'utf8').toString("binary"); } : function(orig/*:string*/)/*:string*/ {
 	var out/*:Array<string>*/ = [], i = 0, c = 0, d = 0;
@@ -171,21 +197,21 @@ var htmldecode/*:{(s:string):string}*/ = /*#__PURE__*/(function() {
 				// Remove new lines and spaces from start of content
 				.replace(/^[\t\n\r ]+/, "")
 				// Remove new lines and spaces from end of content
-				.replace(/[\t\n\r ]+$/,"")
+				.replace(/(^|[^\t\n\r ])[\t\n\r ]+$/,"$1")
 				// Added line which removes any white space characters after and before html tags
-				.replace(/>\s+/g,">").replace(/\s+</g,"<")
+				.replace(/>\s+/g,">").replace(/\b\s+</g,"<")
 				// Replace remaining new lines and spaces with space
 				.replace(/[\t\n\r ]+/g, " ")
 				// Replace <br> tags with new lines
 				.replace(/<\s*[bB][rR]\s*\/?>/g,"\n")
 				// Strip HTML elements
-				.replace(/<[^>]*>/g,"");
+				.replace(/<[^<>]*>/g,"");
 		for(var i = 0; i < entities.length; ++i) o = o.replace(entities[i][0], entities[i][1]);
 		return o;
 	};
 })();
 
-var vtvregex = /<\/?(?:vt:)?variant>/g, vtmregex = /<(?:vt:)([^>]*)>([\s\S]*)</;
+var vtvregex = /<\/?(?:vt:)?variant>/g, vtmregex = /<(?:vt:)([^<"'>]*)>([\s\S]*)</;
 function parseVector(data/*:string*/, opts)/*:Array<{v:string,t:string}>*/ {
 	var h = parsexmltag(data);
 
@@ -230,9 +256,8 @@ function xlml_normalize(d)/*:string*/ {
 	if(typeof Uint8Array !== 'undefined' && d instanceof Uint8Array) return utf8read(a2s(ab2a(d)));
 	throw new Error("Bad input format: expected Buffer or string");
 }
-/* UOS uses CJK in tags */
-var xlmlregex = /<(\/?)([^\s?><!\/:]*:|)([^\s?<>:\/]+)(?:[\s?:\/](?:[^>=]|="[^"]*?")*)?>/mg;
-//var xlmlregex = /<(\/?)([a-z0-9]*:|)(\w+)[^>]*>/mg;
+/* UOS uses CJK in tags, ODS uses invalid XML */
+var xlmlregex = /<([\/]?)([^\s?><!\/:"]*:|)([^\s?<>:\/"]+)(?:\s+[^<>=?"'\s]+="[^"]*?")*\s*[\/]?>/mg;
 
 var XMLNS = ({
 	CORE_PROPS: 'http://schemas.openxmlformats.org/package/2006/metadata/core-properties',

bits/24_hoppers.js

@@ -20,7 +20,9 @@ function recordhopper(data, cb/*:RecordHopperCB*/, opts/*:?any*/) {
 
 /* control buffer usage for fixed-length buffers */
 function buf_array()/*:BufArray*/ {
-	var bufs/*:Array<Block>*/ = [], blksz = has_buf ? 256 : 2048;
+	var bufs/*:Array<Block>*/ = [], blksz = has_buf ? 16384 : 2048;
+	var has_buf_subarray = has_buf && (typeof new_buf(blksz).subarray == "function");
+
 	var newblk = function ba_newblk(sz/*:number*/)/*:Block*/ {
 		var o/*:Block*/ = (new_buf(sz)/*:any*/);
 		prep_blob(o, 0);
@@ -49,10 +51,18 @@ function buf_array()/*:BufArray*/ {
 		endbuf();
 		return bconcat(bufs);
 	};
+	var end2 = function() {
+		endbuf(); return bufs;
+	};
 
-	var push = function ba_push(buf) { endbuf(); curbuf = buf; if(curbuf.l == null) curbuf.l = curbuf.length; next(blksz); };
+	var push = function ba_push(buf) {
+		if(curbuf.l > 0) bufs.push(curbuf.slice(0, curbuf.l));
+		bufs.push(buf);
+		curbuf = has_buf_subarray ? curbuf.subarray(curbuf.l || 0) : curbuf.slice(curbuf.l || 0);
+		prep_blob(curbuf, 0);
+	};
 
-	return ({ next:next, push:push, end:end, _bufs:bufs }/*:any*/);
+	return ({ next:next, push:push, end:end, _bufs:bufs, end2:end2 }/*:any*/);
 }
 
 function write_record(ba/*:BufArray*/, type/*:number*/, payload, length/*:?number*/) {

bits/27_csfutils.js

@@ -119,7 +119,7 @@ function sheet_add_aoa(_ws/*:?Worksheet*/, data/*:AOA*/, opts/*:?any*/)/*:Worksh
 	var o = opts || {};
 	var dense = _ws ? (_ws["!data"] != null) : o.dense;
 	if(DENSE != null && dense == null) dense = DENSE;
-	var ws/*:Worksheet*/ = _ws || ({}/*:any*/);
+	var ws/*:Worksheet*/ = _ws || (dense ? ({"!data": []}) : ({}/*:any*/));
 	if(dense && !ws["!data"]) ws["!data"] = [];
 	var _R = 0, _C = 0;
 	if(ws && o.origin != null) {
@@ -128,44 +128,51 @@ function sheet_add_aoa(_ws/*:?Worksheet*/, data/*:AOA*/, opts/*:?any*/)/*:Worksh
 			var _origin/*:CellAddress*/ = typeof o.origin == "string" ? decode_cell(o.origin) : o.origin;
 			_R = _origin.r; _C = _origin.c;
 		}
-		if(!ws["!ref"]) ws["!ref"] = "A1:A1";
 	}
 	var range/*:Range*/ = ({s: {c:10000000, r:10000000}, e: {c:0, r:0}}/*:any*/);
-	if(ws['!ref']) {
+	if(ws["!ref"]){
 		var _range = safe_decode_range(ws['!ref']);
 		range.s.c = _range.s.c;
 		range.s.r = _range.s.r;
 		range.e.c = Math.max(range.e.c, _range.e.c);
 		range.e.r = Math.max(range.e.r, _range.e.r);
-		if(_R == -1) range.e.r = _R = _range.e.r + 1;
+		if(_R == -1) range.e.r = _R = (ws["!ref"] ? _range.e.r + 1 : 0);
+	} else {
+		range.s.c = range.e.c = range.s.r = range.e.r = 0;
 	}
-	var row = [];
+	var row = [], seen = false;
 	for(var R = 0; R != data.length; ++R) {
 		if(!data[R]) continue;
 		if(!Array.isArray(data[R])) throw new Error("aoa_to_sheet expects an array of arrays");
-		var __R = _R + R, __Rstr = "" + (__R + 1);
+		var __R = _R + R;
 		if(dense) {
 			if(!ws["!data"][__R]) ws["!data"][__R] = [];
 			row = ws["!data"][__R];
 		}
-		for(var C = 0; C != data[R].length; ++C) {
-			if(typeof data[R][C] === 'undefined') continue;
-			var cell/*:Cell*/ = ({v: data[R][C] }/*:any*/);
+		var data_R = data[R];
+		for(var C = 0; C != data_R.length; ++C) {
+			if(typeof data_R[C] === 'undefined') continue;
+			var cell/*:Cell*/ = ({v: data_R[C], t:"" }/*:any*/);
 			var __C = _C + C;
 			if(range.s.r > __R) range.s.r = __R;
 			if(range.s.c > __C) range.s.c = __C;
 			if(range.e.r < __R) range.e.r = __R;
 			if(range.e.c < __C) range.e.c = __C;
-			if(data[R][C] && typeof data[R][C] === 'object' && !Array.isArray(data[R][C]) && !(data[R][C] instanceof Date)) cell = data[R][C];
+			seen = true;
+			if(data_R[C] && typeof data_R[C] === 'object' && !Array.isArray(data_R[C]) && !(data_R[C] instanceof Date)) cell = data_R[C];
 			else {
-				if(Array.isArray(cell.v)) { cell.f = data[R][C][1]; cell.v = cell.v[0]; }
+				if(Array.isArray(cell.v)) { cell.f = data_R[C][1]; cell.v = cell.v[0]; }
 				if(cell.v === null) {
 					if(cell.f) cell.t = 'n';
 					else if(o.nullError) { cell.t = 'e'; cell.v = 0; }
 					else if(!o.sheetStubs) continue;
 					else cell.t = 'z';
 				}
-				else if(typeof cell.v === 'number') cell.t = 'n';
+				else if(typeof cell.v === 'number') {
+					if(isFinite(cell.v)) cell.t = 'n';
+					else if(isNaN(cell.v)) { cell.t = 'e'; cell.v = 0x0F; /* #VALUE! */ }
+					else { cell.t = 'e'; cell.v = 0x07; /*# DIV/0 */ }
+				}
 				else if(typeof cell.v === 'boolean') cell.t = 'b';
 				else if(cell.v instanceof Date) {
 					cell.z = o.dateNF || table_fmt[14];
@@ -179,14 +186,13 @@ function sheet_add_aoa(_ws/*:?Worksheet*/, data/*:AOA*/, opts/*:?any*/)/*:Worksh
 				if(row[__C] && row[__C].z) cell.z = row[__C].z;
 				row[__C] = cell;
 			} else {
-				var cell_ref = encode_col(__C) + __Rstr/*:any*/;
+				var cell_ref = encode_col(__C) + (__R + 1)/*:any*/;
 				if(ws[cell_ref] && ws[cell_ref].z) cell.z = ws[cell_ref].z;
 				ws[cell_ref] = cell;
 			}
 		}
 	}
-	if(range.s.c < 10000000) ws['!ref'] = encode_range(range);
+	if(seen && range.s.c < 10400000) ws['!ref'] = encode_range(range);
 	return ws;
 }
 function aoa_to_sheet(data/*:AOA*/, opts/*:?any*/)/*:Worksheet*/ { return sheet_add_aoa(null, data, opts); }
-

bits/35_custprops.js

@@ -1,5 +1,5 @@
 /* 15.2.12.2 Custom File Properties Part */
-var custregex = /<[^>]+>[^<]*/g;
+var custregex = /<[^<>]+>[^<]*/g;
 function parse_cust_props(data/*:string*/, opts) {
 	var p = {}, name = "";
 	var m = data.match(custregex);

bits/38_xlstypes.js

@@ -123,8 +123,8 @@ function parse_TypedPropertyValue(blob, type/*:number*/, _opts)/*:any*/ {
 		case 0x03 /*VT_I4*/: ret = blob.read_shift(4, 'i'); return ret;
 		case 0x0B /*VT_BOOL*/: return blob.read_shift(4) !== 0x0;
 		case 0x13 /*VT_UI4*/: ret = blob.read_shift(4); return ret;
-		case 0x1E /*VT_LPSTR*/: return parse_lpstr(blob, t, 4).replace(chr0,'');
-		case 0x1F /*VT_LPWSTR*/: return parse_lpwstr(blob);
+		case 0x1E /*VT_LPSTR*/: blob.l += 4; val = parse_VtString(blob, blob[blob.l-4]).replace(/(^|[^\u0000])\u0000+$/,"$1"); break;
+		case 0x1F /*VT_LPWSTR*/: blob.l += 4; val = parse_VtString(blob, blob[blob.l-4]).replace(/(^|[^\u0000])\u0000+$/,"$1"); break;
 		case 0x40 /*VT_FILETIME*/: return parse_FILETIME(blob);
 		case 0x41 /*VT_BLOB*/: return parse_BLOB(blob);
 		case 0x47 /*VT_CF*/: return parse_ClipboardData(blob);
@@ -233,8 +233,8 @@ function parse_PropertySet(blob, PIDSI) {
 				/* [MS-OSHARED] 2.3.3.2.3.1.2 + PROPVARIANT */
 				switch(blob[blob.l]) {
 					case 0x41 /*VT_BLOB*/: blob.l += 4; val = parse_BLOB(blob); break;
-					case 0x1E /*VT_LPSTR*/: blob.l += 4; val = parse_VtString(blob, blob[blob.l-4]).replace(/\u0000+$/,""); break;
-					case 0x1F /*VT_LPWSTR*/: blob.l += 4; val = parse_VtString(blob, blob[blob.l-4]).replace(/\u0000+$/,""); break;
+					case 0x1E /*VT_LPSTR*/: blob.l += 4; val = parse_VtString(blob, blob[blob.l-4]).replace(/(^|[^\u0000])\u0000+$/,"$1"); break;
+					case 0x1F /*VT_LPWSTR*/: blob.l += 4; val = parse_VtString(blob, blob[blob.l-4]).replace(/(^|[^\u0000])\u0000+$/,"$1"); break;
 					case 0x03 /*VT_I4*/: blob.l += 4; val = blob.read_shift(4, 'i'); break;
 					case 0x13 /*VT_UI4*/: blob.l += 4; val = blob.read_shift(4); break;
 					case 0x05 /*VT_R8*/: blob.l += 4; val = blob.read_shift(8, 'f'); break;

bits/40_harb.js

@@ -118,7 +118,7 @@ function dbf_to_aoa(buf, opts)/*:AOA*/ {
 	var ww = l7 ? 32 : 11;
 	while(d.l < hend && d[d.l] != 0x0d) {
 		field = ({}/*:any*/);
-		field.name = (typeof $cptable !== "undefined" ? $cptable.utils.decode(current_cp, d.slice(d.l, d.l+ww)) : a2s(d.slice(d.l, d.l + ww))).replace(/[\u0000\r\n].*$/g,"");
+		field.name = (typeof $cptable !== "undefined" ? $cptable.utils.decode(current_cp, d.slice(d.l, d.l+ww)) : a2s(d.slice(d.l, d.l + ww))).replace(/[\u0000\r\n][\S\s]*$/g,"");
 		d.l += ww;
 		field.type = String.fromCharCode(d.read_shift(1));
 		if(ft != 0x02 && !l7) field.offset = d.read_shift(4);
@@ -176,7 +176,7 @@ function dbf_to_aoa(buf, opts)/*:AOA*/ {
 			switch(fields[C].type) {
 				case 'C':
 					// NOTE: it is conventional to write '  /  /  ' for empty dates
-					if(s.trim().length) out[R][C] = s.replace(/\s+$/,"");
+					if(s.trim().length) out[R][C] = s.replace(/([^\s])\s+$/,"$1");
 					break;
 				case 'D':
 					if(s.length === 8) {
@@ -593,7 +593,7 @@ var SYLK = /*#__PURE__*/(function() {
 		var o = "C;Y" + (R+1) + ";X" + (C+1) + ";K";
 		switch(cell.t) {
 			case 'n':
-				o += (cell.v||0);
+				o += isFinite(cell.v) ? (cell.v||0) : BErr[isNaN(cell.v) ? 0x24 : 0x07];
 				if(cell.f && !cell.F) o += ";E" + a1_to_rc(cell.f, {r:R, c:C}); break;
 			case 'b': o += cell.v ? "TRUE" : "FALSE"; break;
 			case 'e': o += cell.w || BErr[cell.v] || cell.v; break;
@@ -822,7 +822,7 @@ var ETH = /*#__PURE__*/(function() {
 				case 'vtc':
 					switch(record[3]) {
 						case 'nl': arr[R][C] = +record[4] ? true : false; break;
-						default: arr[R][C] = +record[4]; break;
+						default: arr[R][C] = record[record.length-1].charAt(0) == "#" ? ({t: "e", v: RBErr[record[record.length-1]] }) : +record[4]; break;
 					}
 					if(record[2] == 'vtf') arr[R][C] = [arr[R][C], _f];
 			}
@@ -865,11 +865,7 @@ var ETH = /*#__PURE__*/(function() {
 				if(!cell || cell.v == null || cell.t === 'z') continue;
 				oo = ["cell", coord, 't'];
 				switch(cell.t) {
-					case 's': case 'str': oo.push(encode(cell.v)); break;
-					case 'n':
-						if(!cell.f) { oo[2]='v'; oo[3]=cell.v; }
-						else { oo[2]='vtf'; oo[3]='n'; oo[4]=cell.v; oo[5]=encode(cell.f); }
-						break;
+					case 's': oo.push(encode(cell.v)); break;
 					case 'b':
 						oo[2] = 'vt'+(cell.f?'f':'c'); oo[3]='nl'; oo[4]=cell.v?"1":"0";
 						oo[5] = encode(cell.f||(cell.v?'TRUE':'FALSE'));
@@ -879,6 +875,19 @@ var ETH = /*#__PURE__*/(function() {
 						oo[2] = 'vtc'; oo[3] = 'nd'; oo[4] = ""+t;
 						oo[5] = cell.w || SSF_format(cell.z || table_fmt[14], t);
 						break;
+					case 'n':
+						if(isFinite(cell.v)) {
+							if(!cell.f) { oo[2]='v'; oo[3]=cell.v; }
+							else { oo[2]='vtf'; oo[3]='n'; oo[4]=cell.v; oo[5]=encode(cell.f); }
+						} else {
+							oo[2] = 'vt' + (cell.f ? 'f' : 'c');
+							oo[3] = "e" + BErr[isNaN(cell.v) ? 0x24 : 0x07];
+							oo[4] = "0";
+							oo[5] = cell.f || oo[3].slice(1);
+							oo[6] = "e";
+							oo[7] = oo[3].slice(1);
+						}
+						break;
 					case 'e': continue;
 				}
 				o.push(oo.join(":"));
@@ -910,6 +919,7 @@ var PRN = /*#__PURE__*/(function() {
 		else if(data === 'FALSE') arr[R][C] = false;
 		else if(!isNaN(fuzzynum(data))) arr[R][C] = fuzzynum(data);
 		else if(!isNaN(fuzzydate(data).getDate())) arr[R][C] = parseDate(data);
+		else if(data.charCodeAt(0) == 35 /* # */ && RBErr[data] != null) arr[R][C] = ({ t: 'e', v: RBErr[data], w: data });
 		else arr[R][C] = data;
 	}
 
@@ -1027,6 +1037,8 @@ var PRN = /*#__PURE__*/(function() {
 				if(o.cellDates) { cell.t = 'd'; cell.v = v; }
 				else { cell.t = 'n'; cell.v = datenum(v); }
 				if(!o.cellNF) delete cell.z;
+			} else if(s.charCodeAt(0) == 35 /* # */ && RBErr[s] != null) {
+				cell.t = 'e'; cell.w = s; cell.v = RBErr[s];
 			} else {
 				cell.t = 's';
 				cell.v = s;
@@ -1121,8 +1133,22 @@ function read_wb_ID(d, opts) {
 		return out;
 	} catch(e) {
 		o.WTF = OLD_WTF;
-		if(!e.message.match(/SYLK bad record ID/) && OLD_WTF) throw e;
+		if((e.message.indexOf("SYLK bad record ID") == -1) && OLD_WTF) throw e;
 		return PRN.to_workbook(d, opts);
 	}
 }
 
+function read_wb_TABL(d, opts) {
+	var o = opts || {}, OLD_WTF = !!o.WTF; o.WTF = true;
+	try {
+		var out = DIF.to_workbook(d, o);
+		if(!out || !out.Sheets) throw "DIF bad workbook";
+		var ws = out.Sheets[out.SheetNames[0]];
+		if(!ws || !ws["!ref"]) throw "DIF empty worksheet";
+		o.WTF = OLD_WTF;
+		return out;
+	} catch(e) {
+		o.WTF = OLD_WTF;
+		return PRN.to_workbook(d, opts);
+	}
+}

bits/41_lotus.js

@@ -598,7 +598,6 @@ var WK_ = /*#__PURE__*/(function() {
 		else console.error("WK1 bad formula parse |" + out.join("|") + "|");
 	}
 
-
 	function parse_cell_3(blob/*::, length*/) {
 		var o = [{c:0,r:0}, {t:'n',v:0}, 0];
 		o[0].r = blob.read_shift(2); o[3] = blob[blob.l++]; o[0].c = blob[blob.l++];

bits/42_sstxml.js

@@ -4,7 +4,7 @@ function parse_rpr(rpr) {
 	var pass = false;
 	if(m) for(;i!=m.length; ++i) {
 		var y = parsexmltag(m[i]);
-		switch(y[0].replace(/\w*:/g,"")) {
+		switch(y[0].replace(/<\w*:/g,"<")) {
 			/* 18.8.12 condense CT_BooleanProperty */
 			/* ** not required . */
 			case '<condense': break;
@@ -167,8 +167,7 @@ var rs_to_html = /*#__PURE__*/(function parse_rs_factory() {
 })();
 
 /* 18.4.8 si CT_Rst */
-var sitregex = /<(?:\w+:)?t[^>]*>([^<]*)<\/(?:\w+:)?t>/g, sirregex = /<(?:\w+:)?r\b[^>]*>/;
-var sirphregex = /<(?:\w+:)?rPh.*?>([\s\S]*?)<\/(?:\w+:)?rPh>/g;
+var sitregex = /<(?:\w+:)?t\b[^<>]*>([^<]*)<\/(?:\w+:)?t>/g, sirregex = /<(?:\w+:)?r\b[^<>]*>/;
 function parse_si(x, opts) {
 	var html = opts ? opts.cellHTML : true;
 	var z = {};
@@ -184,7 +183,7 @@ function parse_si(x, opts) {
 	/* 18.4.4 r CT_RElt (Rich Text Run) */
 	else if((/*y = */x.match(sirregex))) {
 		z.r = utf8read(x);
-		z.t = unescapexml(utf8read((x.replace(sirphregex, '').match(sitregex)||[]).join("").replace(tagregex,"")), true);
+		z.t = unescapexml(utf8read((str_remove_xml_ns_g(x, "rPh").match(sitregex)||[]).join("").replace(tagregex,"")), true);
 		if(html) z.h = rs_to_html(parse_rs(z.r));
 	}
 	/* 18.4.3 phoneticPr CT_PhoneticPr (TODO: needed for Asian support) */
@@ -193,21 +192,20 @@ function parse_si(x, opts) {
 }
 
 /* 18.4 Shared String Table */
-var sstr0 = /<(?:\w+:)?sst([^>]*)>([\s\S]*)<\/(?:\w+:)?sst>/;
 var sstr1 = /<(?:\w+:)?(?:si|sstItem)>/g;
 var sstr2 = /<\/(?:\w+:)?(?:si|sstItem)>/;
 function parse_sst_xml(data/*:string*/, opts)/*:SST*/ {
 	var s/*:SST*/ = ([]/*:any*/), ss = "";
 	if(!data) return s;
 	/* 18.4.9 sst CT_Sst */
-	var sst = data.match(sstr0);
+	var sst = str_match_xml_ns(data, "sst");
 	if(sst) {
-		ss = sst[2].replace(sstr1,"").split(sstr2);
+		ss = sst[1].replace(sstr1,"").split(sstr2);
 		for(var i = 0; i != ss.length; ++i) {
 			var o = parse_si(ss[i].trim(), opts);
 			if(o != null) s[s.length] = o;
 		}
-		sst = parsexmltag(sst[1]); s.Count = sst.count; s.Unique = sst.uniqueCount;
+		sst = parsexmltag(sst[0].slice(0, sst[0].indexOf(">"))); s.Count = sst.count; s.Unique = sst.uniqueCount;
 	}
 	return s;
 }

bits/45_rtf.js

@@ -49,6 +49,10 @@ function rtf_to_sheet_str(str, opts) {
               if (o.cellText !== false)
                 cell.w = cell.v;
               cell.v = fuzzynum(cell.v);
+            } else if (RBErr[cell.v] != null) {
+              cell.t = "e";
+              cell.w = cell.v;
+              cell.v = RBErr[cell.v];
             }
             if (dense)
               row[C] = cell;

bits/47_styxml.js

@@ -3,7 +3,7 @@ function parse_borders(t, styles, themes, opts) {
 	styles.Borders = [];
 	var border = {};
 	var pass = false;
-	(t[0].match(tagregex)||[]).forEach(function(x) {
+	(t.match(tagregex)||[]).forEach(function(x) {
 		var y = parsexmltag(x);
 		switch(strip_ns(y[0])) {
 			case '<borders': case '<borders>': case '</borders>': break;
@@ -78,7 +78,7 @@ function parse_fills(t, styles, themes, opts) {
 	styles.Fills = [];
 	var fill = {};
 	var pass = false;
-	(t[0].match(tagregex)||[]).forEach(function(x) {
+	(t.match(tagregex)||[]).forEach(function(x) {
 		var y = parsexmltag(x);
 		switch(strip_ns(y[0])) {
 			case '<fills': case '<fills>': case '</fills>': break;
@@ -144,7 +144,7 @@ function parse_fonts(t, styles, themes, opts) {
 	styles.Fonts = [];
 	var font = {};
 	var pass = false;
-	(t[0].match(tagregex)||[]).forEach(function(x) {
+	(t.match(tagregex)||[]).forEach(function(x) {
 		var y = parsexmltag(x);
 		switch(strip_ns(y[0])) {
 			case '<fonts': case '<fonts>': case '</fonts>': break;
@@ -163,10 +163,12 @@ function parse_fonts(t, styles, themes, opts) {
 			/* 18.8.2  b CT_BooleanProperty */
 			case '<b': font.bold = y.val ? parsexmlbool(y.val) : 1; break;
 			case '<b/>': font.bold = 1; break;
+			case '</b>': case '</b': break;
 
 			/* 18.8.26 i CT_BooleanProperty */
 			case '<i': font.italic = y.val ? parsexmlbool(y.val) : 1; break;
 			case '<i/>': font.italic = 1; break;
+			case '</i>': case '</i': break;
 
 			/* 18.4.13 u CT_UnderlineProperty */
 			case '<u':
@@ -178,48 +180,55 @@ function parse_fonts(t, styles, themes, opts) {
 					case "doubleAccounting": font.underline = 0x22; break;
 				} break;
 			case '<u/>': font.underline = 1; break;
+			case '</u>': case '</u': break;
 
 			/* 18.4.10 strike CT_BooleanProperty */
 			case '<strike': font.strike = y.val ? parsexmlbool(y.val) : 1; break;
 			case '<strike/>': font.strike = 1; break;
+			case '</strike>': case '</strike': break;
 
 			/* 18.4.2  outline CT_BooleanProperty */
 			case '<outline': font.outline = y.val ? parsexmlbool(y.val) : 1; break;
 			case '<outline/>': font.outline = 1; break;
+			case '</outline>': case '</outline': break;
 
 			/* 18.8.36 shadow CT_BooleanProperty */
 			case '<shadow': font.shadow = y.val ? parsexmlbool(y.val) : 1; break;
 			case '<shadow/>': font.shadow = 1; break;
+			case '</shadow>': case '</shadow': break;
 
 			/* 18.8.12 condense CT_BooleanProperty */
 			case '<condense': font.condense = y.val ? parsexmlbool(y.val) : 1; break;
 			case '<condense/>': font.condense = 1; break;
+			case '</condense>': case '</condense': break;
 
 			/* 18.8.17 extend CT_BooleanProperty */
 			case '<extend': font.extend = y.val ? parsexmlbool(y.val) : 1; break;
 			case '<extend/>': font.extend = 1; break;
+			case '</extend>': case '</extend': break;
 
 			/* 18.4.11 sz CT_FontSize */
 			case '<sz': if(y.val) font.sz = +y.val; break;
-			case '<sz/>': case '</sz>': break;
+			case '<sz/>': case '</sz>': case '</sz': break;
 
 			/* 18.4.14 vertAlign CT_VerticalAlignFontProperty */
 			case '<vertAlign': if(y.val) font.vertAlign = y.val; break;
-			case '<vertAlign/>': case '</vertAlign>': break;
+			case '<vertAlign/>': case '</vertAlign>': case '</vertAlign': break;
 
 			/* 18.8.18 family CT_FontFamily */
 			case '<family': if(y.val) font.family = parseInt(y.val,10); break;
-			case '<family/>': case '</family>': break;
+			case '<family/>': case '</family>': case '</family': break;
 
 			/* 18.8.35 scheme CT_FontScheme */
 			case '<scheme': if(y.val) font.scheme = y.val; break;
-			case '<scheme/>': case '</scheme>': break;
+			case '<scheme/>': case '</scheme>': case '</scheme': break;
 
 			/* 18.4.1 charset CT_IntProperty */
 			case '<charset':
 				if(y.val == '1') break;
 				y.codepage = CS2CP[parseInt(y.val, 10)];
 				break;
+			case '<charset/>': case '</charset>': case '</charset': break;
 
 			/* 18.?.? color CT_Color */
 			case '<color':
@@ -242,11 +251,11 @@ function parse_fonts(t, styles, themes, opts) {
 				}
 
 				break;
-			case '<color/>': case '</color>': break;
+			case '<color/>': case '</color>': case '</color': break;
 
 			/* note: sometimes mc:AlternateContent appears bare */
 			case '<AlternateContent': pass = true; break;
-			case '</AlternateContent>': pass = false; break;
+			case '</AlternateContent>': case '</AlternateContent': pass = false; break;
 
 			/* 18.2.10 extLst CT_ExtensionList ? */
 			case '<extLst': case '<extLst>': case '</extLst>': break;
@@ -264,7 +273,7 @@ function parse_numFmts(t, styles, opts) {
 	styles.NumberFmt = [];
 	var k/*Array<number>*/ = (keys(table_fmt)/*:any*/);
 	for(var i=0; i < k.length; ++i) styles.NumberFmt[k[i]] = table_fmt[k[i]];
-	var m = t[0].match(tagregex);
+	var m = t.match(tagregex);
 	if(!m) return;
 	for(i=0; i < m.length; ++i) {
 		var y = parsexmltag(m[i]);
@@ -305,7 +314,7 @@ function parse_cellXfs(t, styles, opts) {
 	styles.CellXf = [];
 	var xf;
 	var pass = false;
-	(t[0].match(tagregex)||[]).forEach(function(x) {
+	(t.match(tagregex)||[]).forEach(function(x) {
 		var y = parsexmltag(x), i = 0;
 		switch(strip_ns(y[0])) {
 			case '<cellXfs': case '<cellXfs>': case '<cellXfs/>': case '</cellXfs>': break;
@@ -370,36 +379,31 @@ function write_cellXfs(cellXfs)/*:string*/ {
 
 /* 18.8 Styles CT_Stylesheet*/
 var parse_sty_xml= /*#__PURE__*/(function make_pstyx() {
-var numFmtRegex = /<(?:\w+:)?numFmts([^>]*)>[\S\s]*?<\/(?:\w+:)?numFmts>/;
-var cellXfRegex = /<(?:\w+:)?cellXfs([^>]*)>[\S\s]*?<\/(?:\w+:)?cellXfs>/;
-var fillsRegex = /<(?:\w+:)?fills([^>]*)>[\S\s]*?<\/(?:\w+:)?fills>/;
-var fontsRegex = /<(?:\w+:)?fonts([^>]*)>[\S\s]*?<\/(?:\w+:)?fonts>/;
-var bordersRegex = /<(?:\w+:)?borders([^>]*)>[\S\s]*?<\/(?:\w+:)?borders>/;
 
 return function parse_sty_xml(data, themes, opts) {
 	var styles = {};
 	if(!data) return styles;
-	data = str_remove_ng(data, "<!--", "-->").replace(/<!DOCTYPE[^\[]*\[[^\]]*\]>/gm,"");
+	data = remove_doctype(str_remove_ng(data, "<!--", "-->"));
 	/* 18.8.39 styleSheet CT_Stylesheet */
 	var t;
 
 	/* 18.8.31 numFmts CT_NumFmts ? */
-	if((t=data.match(numFmtRegex))) parse_numFmts(t, styles, opts);
+	if((t=str_match_xml_ns(data, "numFmts"))) parse_numFmts(t[0], styles, opts);
 
 	/* 18.8.23 fonts CT_Fonts ? */
-	if((t=data.match(fontsRegex))) parse_fonts(t, styles, themes, opts);
+	if((t=str_match_xml_ns(data, "fonts"))) parse_fonts(t[0], styles, themes, opts);
 
 	/* 18.8.21 fills CT_Fills ? */
-	if((t=data.match(fillsRegex))) parse_fills(t, styles, themes, opts);
+	if((t=str_match_xml_ns(data, "fills"))) parse_fills(t[0], styles, themes, opts);
 
 	/* 18.8.5  borders CT_Borders ? */
-	if((t=data.match(bordersRegex))) parse_borders(t, styles, themes, opts);
+	if((t=str_match_xml_ns(data, "borders"))) parse_borders(t[0], styles, themes, opts);
 
 	/* 18.8.9  cellStyleXfs CT_CellStyleXfs ? */
 	/* 18.8.8  cellStyles CT_CellStyles ? */
 
 	/* 18.8.10 cellXfs CT_CellXfs ? */
-	if((t=data.match(cellXfRegex))) parse_cellXfs(t, styles, opts);
+	if((t=str_match_xml_ns(data, "cellXfs"))) parse_cellXfs(t[0], styles, opts);
 
 	/* 18.8.15 dxfs CT_Dxfs ? */
 	/* 18.8.42 tableStyles CT_TableStyles ? */

bits/49_theme.js

@@ -70,30 +70,24 @@ function parse_fontScheme(/*::t, themes, opts*/) { }
 /* 20.1.4.1.15 fmtScheme CT_StyleMatrix */
 function parse_fmtScheme(/*::t, themes, opts*/) { }
 
-var clrsregex = /<a:clrScheme([^>]*)>[\s\S]*<\/a:clrScheme>/;
-var fntsregex = /<a:fontScheme([^>]*)>[\s\S]*<\/a:fontScheme>/;
-var fmtsregex = /<a:fmtScheme([^>]*)>[\s\S]*<\/a:fmtScheme>/;
-
 /* 20.1.6.10 themeElements CT_BaseStyles */
 function parse_themeElements(data, themes, opts) {
 	themes.themeElements = {};
 
 	var t;
 
-	[
-		/* clrScheme CT_ColorScheme */
-		['clrScheme', clrsregex, parse_clrScheme],
-		/* fontScheme CT_FontScheme */
-		['fontScheme', fntsregex, parse_fontScheme],
-		/* fmtScheme CT_StyleMatrix */
-		['fmtScheme', fmtsregex, parse_fmtScheme]
-	].forEach(function(m) {
-		if(!(t=data.match(m[1]))) throw new Error(m[0] + ' not found in themeElements');
-		m[2](t, themes, opts);
-	});
-}
+	/* clrScheme CT_ColorScheme */
+	if(!(t=str_match_xml(data, "a:clrScheme"))) throw new Error('clrScheme not found in themeElements');
+	parse_clrScheme(t, themes, opts);
 
-var themeltregex = /<a:themeElements([^>]*)>[\s\S]*<\/a:themeElements>/;
+	/* fontScheme CT_FontScheme */
+	if(!(t=str_match_xml(data, "a:fontScheme"))) throw new Error('fontScheme not found in themeElements');
+	parse_fontScheme(t, themes, opts);
+
+	/* fmtScheme CT_StyleMatrix */
+	if(!(t=str_match_xml(data, "a:fmtScheme"))) throw new Error('fmtScheme not found in themeElements');
+	parse_fmtScheme(t, themes, opts);
+}
 
 /* 14.2.7 Theme Part */
 function parse_theme_xml(data/*:string*/, opts) {
@@ -104,7 +98,7 @@ function parse_theme_xml(data/*:string*/, opts) {
 	var themes = {};
 
 	/* themeElements CT_BaseStyles */
-	if(!(t=data.match(themeltregex))) throw new Error('themeElements not found in theme');
+	if(!(t=str_match_xml(data, "a:themeElements"))) throw new Error('themeElements not found in theme');
 	parse_themeElements(t[0], themes, opts);
 	themes.raw = data;
 	return themes;

bits/51_xlsbmeta.js

@@ -52,6 +52,10 @@ function parse_xlmeta_bin(data, name, _opts) {
   var metatype = 2;
   recordhopper(data, function(val, R, RT) {
     switch (RT) {
+      case 58:
+        break;
+      case 59:
+        break;
       case 335:
         out.Types.push({ name: val.name });
         break;

bits/53_externlink.js

@@ -35,6 +35,7 @@ function parse_xlink_bin(data, rel, name/*:string*/, _opts) {
 			case 0x0249: /* 'BrtSupNameFmla' */
 			case 0x024A: /* 'BrtSupNameBits' */
 			case 0x024B: /* 'BrtSupNameEnd' */
+			case 0x13F4: /* 'BrtExternalLinksAlternateUrls' */
 				break;
 
 			case 0x0023: /* 'BrtFRTBegin' */

bits/55_vml.js

@@ -1,8 +1,7 @@
 /* L.5.5.2 SpreadsheetML Comments + VML Schema */
-var shapevmlregex = /<(?:\w+:)?shape(?:[^\w][^>]*)?>([\s\S]*?)<\/(?:\w+:)?shape>/g;
 function parse_vml(data/*:string*/, sheet, comments) {
 	var cidx = 0;
-	(data.match(shapevmlregex)||[]).forEach(function(m) {
+	(str_match_xml_ns_g(data, "shape")||[]).forEach(function(m) {
 		var type = "";
 		var hidden = true;
 		var aidx = -1;

bits/57_cmntxml.js

@@ -4,22 +4,22 @@ function parse_comments_xml(data/*:string*/, opts)/*:Array<RawComment>*/ {
 	if(data.match(/<(?:\w+:)?comments *\/>/)) return [];
 	var authors/*:Array<string>*/ = [];
 	var commentList/*:Array<RawComment>*/ = [];
-	var authtag = data.match(/<(?:\w+:)?authors>([\s\S]*)<\/(?:\w+:)?authors>/);
+	var authtag = str_match_xml_ns(data, "authors");
 	if(authtag && authtag[1]) authtag[1].split(/<\/\w*:?author>/).forEach(function(x) {
 		if(x === "" || x.trim() === "") return;
-		var a = x.match(/<(?:\w+:)?author[^>]*>(.*)/);
+		var a = x.match(/<(?:\w+:)?author[^<>]*>(.*)/);
 		if(a) authors.push(a[1]);
 	});
-	var cmnttag = data.match(/<(?:\w+:)?commentList>([\s\S]*)<\/(?:\w+:)?commentList>/);
+	var cmnttag = str_match_xml_ns(data, "commentList");
 	if(cmnttag && cmnttag[1]) cmnttag[1].split(/<\/\w*:?comment>/).forEach(function(x) {
 		if(x === "" || x.trim() === "") return;
-		var cm = x.match(/<(?:\w+:)?comment[^>]*>/);
+		var cm = x.match(/<(?:\w+:)?comment[^<>]*>/);
 		if(!cm) return;
 		var y = parsexmltag(cm[0]);
 		var comment/*:RawComment*/ = ({ author: y.authorId && authors[y.authorId] || "sheetjsghost", ref: y.ref, guid: y.guid }/*:any*/);
 		var cell = decode_cell(y.ref);
 		if(opts.sheetRows && opts.sheetRows <= cell.r) return;
-		var textMatch = x.match(/<(?:\w+:)?text>([\s\S]*)<\/(?:\w+:)?text>/);
+		var textMatch = str_match_xml_ns(x, "text");
 		var rt = !!textMatch && !!textMatch[1] && parse_si(textMatch[1]) || {r:"",t:"",h:""};
 		comment.r = rt.r;
 		if(rt.r == "<t></t>") rt.t = rt.h = "";

bits/59_vba.js

@@ -13,7 +13,7 @@ function fill_vba_xls(cfb, vba) {
   vba.FullPaths.forEach(function(p, i) {
     if (i == 0)
       return;
-    var newpath = p.replace(/[^\/]*[\/]/, "/_VBA_PROJECT_CUR/");
+    var newpath = p.replace(/^[\/]*[^\/]*[\/]/, "/_VBA_PROJECT_CUR/");
     if (newpath.slice(-1) !== "/")
       CFB.utils.cfb_add(cfb, newpath, vba.FileIndex[i].content);
   });

bits/67_wsxml.js

@@ -2,16 +2,13 @@ function parse_ws_xml_dim(ws/*:Worksheet*/, s/*:string*/) {
 	var d = safe_decode_range(s);
 	if(d.s.r<=d.e.r && d.s.c<=d.e.c && d.s.r>=0 && d.s.c>=0) ws["!ref"] = encode_range(d);
 }
-var mergecregex = /<(?:\w:)?mergeCell ref=["'][A-Z0-9:]+['"]\s*[\/]?>/g;
-var sheetdataregex = /<(?:\w+:)?sheetData[^>]*>([\s\S]*)<\/(?:\w+:)?sheetData>/;
-var hlinkregex = /<(?:\w:)?hyperlink [^>]*>/mg;
+var mergecregex = /<(?:\w+:)?mergeCell ref=["'][A-Z0-9:]+['"]\s*[\/]?>/g;
+var hlinkregex = /<(?:\w+:)?hyperlink [^<>]*>/mg;
 var dimregex = /"(\w*:\w*)"/;
-var colregex = /<(?:\w:)?col\b[^>]*[\/]?>/g;
+var colregex = /<(?:\w+:)?col\b[^<>]*[\/]?>/g;
 var afregex = /<(?:\w:)?autoFilter[^>]*([\/]|>([\s\S]*)<\/(?:\w:)?autoFilter)>/g;
-var marginregex= /<(?:\w:)?pageMargins[^>]*\/>/g;
-var sheetprregex = /<(?:\w:)?sheetPr\b(?:[^>a-z][^>]*)?\/>/;
-var sheetprregex2= /<(?:\w:)?sheetPr[^>]*(?:[\/]|>([\s\S]*)<\/(?:\w:)?sheetPr)>/;
-var svsregex = /<(?:\w:)?sheetViews[^>]*(?:[\/]|>([\s\S]*)<\/(?:\w:)?sheetViews)>/;
+var marginregex= /<(?:\w+:)?pageMargins[^<>]*\/>/g;
+var sheetprregex = /<(?:\w+:)?sheetPr\b[^<>]*?\/>/;
 
 /* 18.3 Worksheets */
 function parse_ws_xml(data/*:?string*/, opts, idx/*:number*/, rels, wb/*:WBWBProps*/, themes, styles)/*:Worksheet*/ {
@@ -24,7 +21,7 @@ function parse_ws_xml(data/*:?string*/, opts, idx/*:number*/, rels, wb/*:WBWBPro
 	var refguess/*:Range*/ = ({s: {r:2000000, c:2000000}, e: {r:0, c:0} }/*:any*/);
 
 	var data1 = "", data2 = "";
-	var mtch/*:?any*/ = data.match(sheetdataregex);
+	var mtch/*:?any*/ = str_match_xml_ns(data, "sheetData");
 	if(mtch) {
 		data1 = data.slice(0, mtch.index);
 		data2 = data.slice(mtch.index + mtch[0].length);
@@ -33,7 +30,7 @@ function parse_ws_xml(data/*:?string*/, opts, idx/*:number*/, rels, wb/*:WBWBPro
 	/* 18.3.1.82 sheetPr CT_SheetPr */
 	var sheetPr = data1.match(sheetprregex);
 	if(sheetPr) parse_ws_xml_sheetpr(sheetPr[0], s, wb, idx);
-	else if((sheetPr = data1.match(sheetprregex2))) parse_ws_xml_sheetpr2(sheetPr[0], sheetPr[1]||"", s, wb, idx, styles, themes);
+	else if((sheetPr = str_match_xml_ns(data1, "sheetPr"))) parse_ws_xml_sheetpr2(sheetPr[0], sheetPr[1]||"", s, wb, idx, styles, themes);
 
 	/* 18.3.1.35 dimension CT_SheetDimension */
 	var ridx = (data1.match(/<(?:\w*:)?dimension/)||{index:-1}).index;
@@ -43,7 +40,7 @@ function parse_ws_xml(data/*:?string*/, opts, idx/*:number*/, rels, wb/*:WBWBPro
 	}
 
 	/* 18.3.1.88 sheetViews CT_SheetViews */
-	var svs = data1.match(svsregex);
+	var svs = str_match_xml_ns(data1, "sheetViews");
 	if(svs && svs[1]) parse_ws_xml_sheetviews(svs[1], wb);
 
 	/* 18.3.1.17 cols CT_Cols */
@@ -65,7 +62,7 @@ function parse_ws_xml(data/*:?string*/, opts, idx/*:number*/, rels, wb/*:WBWBPro
 	var merges/*:Array<Range>*/ = [];
 	var _merge = data2.match(mergecregex);
 	if(_merge) for(ridx = 0; ridx != _merge.length; ++ridx)
-		merges[ridx] = safe_decode_range(_merge[ridx].slice(_merge[ridx].indexOf("\"")+1));
+		merges[ridx] = safe_decode_range(_merge[ridx].slice(_merge[ridx].indexOf("=")+2));
 
 	/* 18.3.1.48 hyperlinks CT_Hyperlinks */
 	var hlink = data2.match(hlinkregex);
@@ -220,7 +217,7 @@ function write_ws_xml_cols(ws, cols)/*:string*/ {
 }
 
 function parse_ws_xml_autofilter(data/*:string*/) {
-	var o = { ref: (data.match(/ref="([^"]*)"/)||[])[1]};
+	var o = { ref: (data.match(/ref=["']([^"']*)["']/)||[])[1]};
 	return o;
 }
 function write_ws_xml_autofilter(data, ws, wb, idx)/*:string*/ {
@@ -242,7 +239,7 @@ function write_ws_xml_autofilter(data, ws, wb, idx)/*:string*/ {
 
 /* 18.3.1.88 sheetViews CT_SheetViews */
 /* 18.3.1.87 sheetView CT_SheetView */
-var sviewregex = /<(?:\w:)?sheetView(?:[^>a-z][^>]*)?\/?>/g;
+var sviewregex = /<(?:\w:)?sheetView(?:[^<>a-z][^<>]*)?\/?>/g;
 function parse_ws_xml_sheetviews(data, wb/*:WBWBProps*/) {
 	if(!wb.Views) wb.Views = [{}];
 	(data.match(sviewregex)||[]).forEach(function(r/*:string*/, i/*:number*/) {
@@ -321,7 +318,7 @@ function write_ws_xml_cell(cell/*:Cell*/, ref, ws, opts, idx, wb, date1904)/*:st
 
 var parse_ws_xml_data = /*#__PURE__*/(function() {
 	var cellregex = /<(?:\w+:)?c[ \/>]/, rowregex = /<\/(?:\w+:)?row>/;
-	var rregex = /r=["']([^"']*)["']/, isregex = /<(?:\w+:)?is>([\S\s]*?)<\/(?:\w+:)?is>/;
+	var rregex = /r=["']([^"']*)["']/;
 	var refregex = /ref=["']([^"']*)["']/;
 
 return function parse_ws_xml_data(sdata/*:string*/, s, opts, guess/*:Range*/, themes, styles, wb) {
@@ -425,7 +422,7 @@ return function parse_ws_xml_data(sdata/*:string*/, s, opts, guess/*:Range*/, th
 							sharedf[parseInt(ftag.si, 10)] = [ftag, ___f, tag.r];
 						}
 					}
-				} else if((cref=d.match(/<f[^>]*\/>/))) {
+				} else if((cref=d.match(/<f[^<>]*\/>/))) {
 					ftag = parsexmltag(cref[0]);
 					if(sharedf[ftag.si]) p.f = shift_formula_xlsx(sharedf[ftag.si][1], sharedf[ftag.si][2]/*[0].ref*/, tag.r);
 				}
@@ -471,7 +468,7 @@ return function parse_ws_xml_data(sdata/*:string*/, s, opts, guess/*:Range*/, th
 					if(opts.cellHTML) p.h = escapehtml(p.v);
 					break;
 				case 'inlineStr':
-					cref = d.match(isregex);
+					cref = str_match_xml_ns(d, "is");
 					p.t = 's';
 					if(cref != null && (sstr = parse_si(cref[1]))) {
 						p.v = sstr.t;
@@ -524,16 +521,17 @@ return function parse_ws_xml_data(sdata/*:string*/, s, opts, guess/*:Range*/, th
 
 function write_ws_xml_data(ws/*:Worksheet*/, opts, idx/*:number*/, wb/*:Workbook*//*::, rels*/)/*:string*/ {
 	var o/*:Array<string>*/ = [], r/*:Array<string>*/ = [], range = safe_decode_range(ws['!ref']), cell="", ref, rr = "", cols/*:Array<string>*/ = [], R=0, C=0, rows = ws['!rows'];
-	var dense = ws["!data"] != null;
+	var dense = ws["!data"] != null, data = dense ? ws["!data"] : [];
 	var params = ({r:rr}/*:any*/), row/*:RowInfo*/, height = -1;
 	var date1904 = (((wb||{}).Workbook||{}).WBProps||{}).date1904;
 	for(C = range.s.c; C <= range.e.c; ++C) cols[C] = encode_col(C);
 	for(R = range.s.r; R <= range.e.r; ++R) {
 		r = [];
 		rr = encode_row(R);
-		for(C = range.s.c; C <= range.e.c; ++C) {
+		var data_R = dense ? data[R] : [];
+		if(data_R) for(C = range.s.c; C <= range.e.c; ++C) {
 			ref = cols[C] + rr;
-			var _cell = dense ? (ws["!data"][R]||[])[C]: ws[ref];
+			var _cell = dense ? data_R[C] : ws[ref];
 			if(_cell === undefined) continue;
 			if((cell = write_ws_xml_cell(_cell, ref, ws, opts, idx, wb, date1904)) != null) r.push(cell);
 		}
@@ -636,7 +634,7 @@ function write_ws_xml(idx/*:number*/, opts, wb/*:Workbook*/, rels)/*:string*/ {
 			if(!l[1].Target) return;
 			rel = ({"ref":l[0]}/*:any*/);
 			if(l[1].Target.charAt(0) != "#") {
-				rId = add_rels(rels, -1, escapexml(l[1].Target).replace(/#.*$/, ""), RELS.HLINK);
+				rId = add_rels(rels, -1, escapexml(l[1].Target).replace(/#[\s\S]*$/, ""), RELS.HLINK);
 				rel["r:id"] = "rId"+rId;
 			}
 			if((relc = l[1].Target.indexOf("#")) > -1) rel.location = escapexml(l[1].Target.slice(relc+1));

bits/68_wsbin.js

@@ -505,7 +505,7 @@ function parse_BrtDVal(/*data, length, opts*/) {
 }
 function parse_BrtDVal14(/*data, length, opts*/) {
 }
-/* [MS-XLSB] 2.1.7.61 Worksheet */
+/* [MS-XLSB] 2.1.7.62 Worksheet */
 function parse_ws_bin(data, _opts, idx, rels, wb/*:WBWBProps*/, themes, styles)/*:Worksheet*/ {
 	if(!data) return data;
 	var opts = _opts || {};
@@ -847,12 +847,15 @@ function write_ws_bin_cell(ba/*:BufArray*/, cell/*:Cell*/, R/*:number*/, C/*:num
 			if(cell.v == (cell.v | 0) && cell.v > -1000 && cell.v < 1000) {
 				if(last_seen) write_record(ba, 0x000D /* BrtShortRk */, write_BrtShortRk(cell, o));
 				else write_record(ba, 0x0002 /* BrtCellRk */, write_BrtCellRk(cell, o));
-			} else if(isNaN(cell.v)) {
-				if(last_seen) write_record(ba, 0x000E /* BrtShortError */, write_BrtShortError({t:"e", v: 0x24}, o)); // #NUM!
-				else write_record(ba, 0x0003 /* BrtCellError */, write_BrtCellError({t:"e", v: 0x24}, o)); // #NUM!
 			} else if(!isFinite(cell.v)) {
-				if(last_seen) write_record(ba, 0x000E /* BrtShortError */, write_BrtShortError({t:"e", v: 0x07}, o)); // #DIV/0!
-				else write_record(ba, 0x0003 /* BrtCellError */, write_BrtCellError({t:"e", v: 0x07}, o)); // #DIV/0!
+				o.t = "e";
+				if(isNaN(cell.v)) {
+					if(last_seen) write_record(ba, 0x000E /* BrtShortError */, write_BrtShortError({t:"e", v: 0x24}, o)); // #NUM!
+					else write_record(ba, 0x0003 /* BrtCellError */, write_BrtCellError({t:"e", v: 0x24}, o)); // #NUM!
+				} else {
+					if(last_seen) write_record(ba, 0x000E /* BrtShortError */, write_BrtShortError({t:"e", v: 0x07}, o)); // #DIV/0!
+					else write_record(ba, 0x0003 /* BrtCellError */, write_BrtCellError({t:"e", v: 0x07}, o)); // #DIV/0!
+				}
 			} else {
 				if(last_seen) write_record(ba, 0x0010 /* BrtShortReal */, write_BrtShortReal(cell, o));
 				else write_record(ba, 0x0005 /* BrtCellReal */, write_BrtCellReal(cell, o));
@@ -874,23 +877,24 @@ function write_ws_bin_cell(ba/*:BufArray*/, cell/*:Cell*/, R/*:number*/, C/*:num
 }
 
 function write_CELLTABLE(ba, ws/*:Worksheet*/, idx/*:number*/, opts, wb/*:Workbook*/) {
-	var range = safe_decode_range(ws['!ref'] || "A1"), ref, rr = "", cols/*:Array<string>*/ = [];
+	var range = safe_decode_range(ws['!ref'] || "A1"), rr = "", cols/*:Array<string>*/ = [];
 	var date1904 = (((wb||{}).Workbook||{}).WBProps||{}).date1904;
 	write_record(ba, 0x0091 /* BrtBeginSheetData */);
-	var dense = ws["!data"] != null;
+	var dense = ws["!data"] != null, row = dense ? ws["!data"][range.s.r] : [];
 	var cap = range.e.r;
 	if(ws['!rows']) cap = Math.max(range.e.r, ws['!rows'].length - 1);
 	for(var R = range.s.r; R <= cap; ++R) {
 		rr = encode_row(R);
+		if(dense) row = ws["!data"][R];
 		/* [ACCELLTABLE] */
 		/* BrtRowHdr */
 		write_row_header(ba, ws, range, R);
+		if(dense && !row) continue;
 		var last_seen = false;
 		if(R <= range.e.r) for(var C = range.s.c; C <= range.e.c; ++C) {
 			/* *16384CELL */
 			if(R === range.s.r) cols[C] = encode_col(C);
-			ref = cols[C] + rr;
-			var cell = dense ? (ws["!data"][R]||[])[C] : ws[ref];
+			var cell = dense ? row[C] : ws[cols[C] + rr];
 			if(!cell) { last_seen = false; continue; }
 			/* write cell */
 			last_seen = write_ws_bin_cell(ba, cell, R, C, opts, ws, last_seen, date1904);
@@ -924,7 +928,7 @@ function write_HLINKS(ba, ws/*:Worksheet*/, rels) {
 	/* *BrtHLink */
 	ws['!links'].forEach(function(l) {
 		if(!l[1].Target) return;
-		var rId = add_rels(rels, -1, l[1].Target.replace(/#.*$/, ""), RELS.HLINK);
+		var rId = add_rels(rels, -1, l[1].Target.replace(/#[\s\S]*$/, ""), RELS.HLINK);
 		write_record(ba, 0x01EE /* BrtHLink */, write_BrtHLink(l, rId));
 	});
 	delete ws['!links'];

bits/69_chartxml.js

@@ -4,16 +4,16 @@ function parse_Cache(data/*:string*/)/*:[Array<number|string>, string, ?string]*
 	var f;
 
 	/* 21.2.2.150 pt CT_NumVal */
-	(data.match(/<c:pt idx="(\d*)">(.*?)<\/c:pt>/mg)||[]).forEach(function(pt) {
-		var q = pt.match(/<c:pt idx="(\d*?)"><c:v>(.*)<\/c:v><\/c:pt>/);
+	(data.match(/<c:pt idx="(\d*)"[^<>\/]*><c:v>([^<])<\/c:v><\/c:pt>/mg)||[]).forEach(function(pt) {
+		var q = pt.match(/<c:pt idx="(\d*)"[^<>\/]*><c:v>([^<]*)<\/c:v><\/c:pt>/);
 		if(!q) return;
 		col[+q[1]] = num ? +q[2] : q[2];
 	});
 
 	/* 21.2.2.71 formatCode CT_Xstring */
-	var nf = unescapexml((data.match(/<c:formatCode>([\s\S]*?)<\/c:formatCode>/) || ["","General"])[1]);
+	var nf = unescapexml((str_match_xml(data, "c:formatCode") || ["","General"])[1]);
 
-	(data.match(/<c:f>(.*?)<\/c:f>/mg)||[]).forEach(function(F) { f = F.replace(/<.*?>/g,""); });
+	(str_match_ng(data, "<c:f>", "</c:f>")||[]).forEach(function(F) { f = F.replace(/<[^<>]*>/g,""); });
 
 	return [col, nf, f];
 }
@@ -28,7 +28,7 @@ function parse_chart(data/*:?string*/, name/*:string*/, opts, rels, wb, csheet)
 	var refguess = {s: {r:2000000, c:2000000}, e: {r:0, c:0} };
 
 	/* 21.2.2.120 numCache CT_NumData */
-	(data.match(/<c:numCache>[\s\S]*?<\/c:numCache>/gm)||[]).forEach(function(nc) {
+	(str_match_ng(data, "<c:numCache>", "</c:numCache>")||[]).forEach(function(nc) {
 		var cache = parse_Cache(nc);
 		refguess.s.r = refguess.s.c = 0;
 		refguess.e.c = C;

bits/75_xlml.js

@@ -1,5 +1,5 @@
-var attregexg2=/([\w:]+)=((?:")([^"]*)(?:")|(?:')([^']*)(?:'))/g;
-var attregex2=/([\w:]+)=((?:")(?:[^"]*)(?:")|(?:')(?:[^']*)(?:'))/;
+var attregexg2=/\b((?:\w+:)?[\w]+)=((?:")([^"]*)(?:")|(?:')([^']*)(?:'))/g;
+var attregex2=/\b((?:\w+:)?[\w]+)=((?:")(?:[^"]*)(?:")|(?:')(?:[^']*)(?:'))/;
 function xlml_parsexmltag(tag/*:string*/, skip_root/*:?boolean*/) {
 	var words = tag.split(/\s+/);
 	var z/*:any*/ = ([]/*:any*/); if(!skip_root) z[0] = words[0];
@@ -112,7 +112,7 @@ function parse_xlml_data(xml, ss, data, cell/*:any*/, base, styles, csty, row, a
 			break;
 		case 'String':
 			cell.t = 's'; cell.r = xlml_fixstr(unescapexml(xml));
-			cell.v = (xml.indexOf("<") > -1 ? unescapexml(ss||xml).replace(/<.*?>/g, "") : cell.r); // todo: BR etc
+			cell.v = (xml.indexOf("<") > -1 ? unescapexml(ss||xml).replace(/<[^<>]*>/g, "") : cell.r); // todo: BR etc
 			break;
 		case 'DateTime':
 			if(xml.slice(-1) != "Z") xml += "Z";
@@ -1144,7 +1144,13 @@ function write_ws_xlml_cell(cell, ref/*:string*/, ws, opts, idx/*:number*/, wb,
 	var t = "", p = "";
 	switch(cell.t) {
 		case 'z': if(!opts.sheetStubs) return ""; break;
-		case 'n': t = 'Number'; p = String(cell.v); break;
+		case 'n': {
+			if(!isFinite(cell.v)) {
+				t = 'Error'; p = BErr[isNaN(cell.v) ? 0x24 : 0x07];
+			} else {
+				t = 'Number'; p = String(cell.v);
+			}
+		} break;
 		case 'b': t = 'Boolean'; p = (cell.v ? "1" : "0"); break;
 		case 'e': t = 'Error'; p = BErr[cell.v]; break;
 		case 'd': t = 'DateTime'; p = new Date(cell.v).toISOString(); if(cell.z == null) cell.z = cell.z || table_fmt[14]; break;
@@ -1186,9 +1192,12 @@ function write_ws_xlml_table(ws/*:Worksheet*/, opts, idx/*:number*/, wb/*:Workbo
 		o.push(writextag("Column",null,k));
 	});
 	var dense = ws["!data"] != null;
+	var addr = {r:0,c:0};
 	for(var R = range.s.r; R <= range.e.r; ++R) {
 		var row = [write_ws_xlml_row(R, (ws['!rows']||[])[R])];
+		addr.r = R;
 		for(var C = range.s.c; C <= range.e.c; ++C) {
+			addr.c = C;
 			var skip = false;
 			for(mi = 0; mi != marr.length; ++mi) {
 				if(marr[mi].s.c > C) continue;
@@ -1199,7 +1208,6 @@ function write_ws_xlml_table(ws/*:Worksheet*/, opts, idx/*:number*/, wb/*:Workbo
 				break;
 			}
 			if(skip) continue;
-			var addr = {r:R,c:C};
 			var ref = encode_col(C) + encode_row(R), cell = dense ? (ws["!data"][R]||[])[C] : ws[ref];
 			row.push(write_ws_xlml_cell(cell, ref, ws, opts, idx, wb, addr));
 		}
@@ -1223,7 +1231,7 @@ function write_ws_xlml(idx/*:number*/, opts, wb/*:Workbook*/)/*:string*/ {
 	/* WorksheetOptions */
 	o.push(write_ws_xlml_wsopts(ws, opts, idx, wb));
 
-	if(ws["!autofilter"]) o.push('<AutoFilter x:Range="' + a1_to_rc(fix_range(ws["!autofilter"].ref), {r:0,c:0}) + '" xmlns="urn:schemas-microsoft-com:office:excel"></AutoFilter>');
+	if(ws && ws["!autofilter"]) o.push('<AutoFilter x:Range="' + a1_to_rc(fix_range(ws["!autofilter"].ref), {r:0,c:0}) + '" xmlns="urn:schemas-microsoft-com:office:excel"></AutoFilter>');
 
 	return o.join("");
 }
@@ -1242,11 +1250,10 @@ function write_xlml(wb, opts)/*:string*/ {
 	d.push(write_props_xlml(wb, opts));
 	d.push(write_wb_xlml(wb, opts));
 	d.push("");
-	d.push("");
+	d.push(write_names_xlml(wb, opts));
 	for(var i = 0; i < wb.SheetNames.length; ++i)
 		d.push(writextag("Worksheet", write_ws_xlml(i, opts, wb), {"ss:Name":escapexml(wb.SheetNames[i])}));
 	d[2] = write_sty_xlml(wb, opts);
-	d[3] = write_names_xlml(wb, opts);
 	return XML_HEADER + writextag("Workbook", d.join(""), {
 		'xmlns':      XLMLNS.ss,
 		'xmlns:o':    XLMLNS.o,

bits/76_xls.js

@@ -627,14 +627,14 @@ function parse_xls_props(cfb/*:CFBContainer*/, props, o) {
 	if(DSI && DSI.size > 0) try {
 		var DocSummary = parse_PropertySetStream(DSI, DocSummaryPIDDSI, PSCLSID.DSI);
 		for(var d in DocSummary) props[d] = DocSummary[d];
-	} catch(e) {if(o.WTF) throw e;/* empty */}
+	} catch(e) {if(o.WTF) console.error(e && e.message || e);}
 
 	/* [MS-OSHARED] 2.3.3.2.1 Summary Information Property Set*/
 	var SI = CFB.find(cfb, '/!SummaryInformation');
 	if(SI && SI.size > 0) try {
 		var Summary = parse_PropertySetStream(SI, SummaryPIDSI, PSCLSID.SI);
 		for(var s in Summary) if(props[s] == null) props[s] = Summary[s];
-	} catch(e) {if(o.WTF) throw e;/* empty */}
+	} catch(e) {if(o.WTF) console.error(e && e.message || e);}
 
 	if(props.HeadingPairs && props.TitlesOfParts) {
 		load_props_pairs(props.HeadingPairs, props.TitlesOfParts, props, o);

bits/77_parsetab.js

@@ -856,6 +856,25 @@ var XLSBRecordEnum = {
 	0x13E8: { /* n:"BrtEndCalcFeatures", */ T:-1 },
 	0x13E9: { /* n:"BrtCalcFeature" */ },
 	0x13EB: { /* n:"BrtExternalLinksPr" */ },
+	0x13EC: { /* n:"BrtPivotCacheImplicitMeasureSupport" */ },
+	0x13ED: { /* n:"BrtPivotFieldIgnorableAfter" */ },
+	0x13EE: { /* n:"BrtPivotHierarchyIgnorableAfter" */ },
+	0x13EF: { /* n:"BrtPivotDataFieldFutureData" */ },
+	0x13F1: { /* n:"BrtPivotCacheRichData" */ },
+	0x13F4: { /* n:"BrtExternalLinksAlternateUrls" */ },
+	0x13F5: { /* n:"BrtBeginPivotVersionInfo" */ },
+	0x13F6: { /* n:"BrtEndPivotVersionInfo" */ },
+	0x13F7: { /* n:"BrtBeginCacheVersionInfo" */ },
+	0x13F8: { /* n:"BrtEndCacheVersionInfo" */ },
+	0x13F9: { /* n:"BrtPivotRequiredFeature" */ },
+	0x13FA: { /* n:"BrtPivotLastUsedFeature" */ },
+	0x13FD: { /* n:"BrtExternalCodeService" */ },
+	0x1407: { /* n:"BrtShowDataTypeIcons" */ },
+	0x140A: { /* n:"BrtSXDIAggregation" */ },
+	0x140B: { /* n:"BrtPivotFieldFeatureSupportInfo" */ },
+	0x140C: { /* n:"BrtPivotCacheAutoRefresh" */ },
+	0x140E: { /* n:"BrtShowDataTypeIconsUserShView" */ },
+	0x140F: { /* n:"BrtWorkbookCompatibilityVersion" */ },
 	0xFFFF: { n:"" }
 };
 

bits/78_writebiff.js

@@ -105,7 +105,7 @@ function write_ws_biff2(ba/*:BufArray*/, ws/*:Worksheet*/, idx/*:number*/, opts,
 	if(range.e.c > 0xFF || range.e.r > 0x3FFF) {
 		if(opts.WTF) throw new Error("Range " + (ws['!ref'] || "A1") + " exceeds format limit A1:IV16384");
 		range.e.c = Math.min(range.e.c, 0xFF);
-		range.e.r = Math.min(range.e.c, 0x3FFF);
+		range.e.r = Math.min(range.e.r, 0x3FFF);
 	}
 	var date1904 = (((wb||{}).Workbook||{}).WBProps||{}).date1904;
 	var row = [], comments = [];
@@ -431,8 +431,54 @@ function write_FMTS_biff8(ba, NF/*:?SSFTable*/, opts) {
 	});
 }
 
+function write_ws_protect_biff8(sp) {
+	/* SheetProtection */
+	var flags = 0x0000;
+	[
+		["objects",             false, 0x0001], // fObjects - Bit 0 (Edit objects)
+		["scenarios",           false, 0x0002], // fScenarios - Bit 1 (Edit scenarios)
+		["formatCells",          true, 0x0004], // fFormatCells - Bit 2 (Change cell formatting)
+		["formatColumns",        true, 0x0008], // fFormatColumns - Bit 3 (Change column formatting)
+		["formatRows",           true, 0x0010], // fFormatRows - Bit 4 (Change row formatting)
+		["insertColumns",        true, 0x0020], // fInsertColumns - Bit 5 (Insert columns)
+		["insertRows",           true, 0x0040], // fInsertRows - Bit 6 (Insert rows)
+		["insertHyperlinks",     true, 0x0080], // fInsertHyperlinks - Bit Bit 7 (Insert hyperlinks)
+		["deleteColumns",        true, 0x0100], // fDeleteColumns - Bit 8 (Delete columns)
+		["deleteRows",           true, 0x0200], // fDeleteRows - Bit 9 (Delete rows)
+		["selectLockedCells",   false, 0x0400], // fSelLockedCells - Bit 10 (Select locked cells)
+		["sort",                 true, 0x0800], // fSort - Bit 11 (Sort a cell range)
+		["autoFilter",           true, 0x1000], // fAutoFilter - Bit 12 (Edit auto filters)
+		["pivotTables",          true, 0x2000], // fPivotTables - Bit 13 (Edit PivotTables)
+		["selectUnlockedCells", false, 0x4000]  // fSelUnlockedCells - Bit 14 (Select unlocked cells)
+	].forEach(function(n) {
+		if(n[1]) flags |= sp[n[0]] != null && !sp[n[0]] ? n[2] : 0x0000;
+		else     flags |= sp[n[0]] != null && sp[n[0]] ? 0x0000 : n[2];
+	});
+
+	/* [MS-XLS] 2.4.112 */
+	var featHdr = new_buf(23);
+	/* [MS-XLS] 2.5.135 */
+	featHdr.write_shift(2, 0x0867);
+	featHdr.write_shift(2, 0x0000);
+	featHdr.write_shift(4, 0x00000000);
+	featHdr.write_shift(4, 0x00000000);
+	/* [MS-XLS] 2.5.237 */
+	featHdr.write_shift(2, 0x0002); // SharedFeatureType ISFPROTECTION
+	/* Reserved byte */
+	featHdr.write_shift(1, 0x01);
+	/* cbHdrData */
+	featHdr.write_shift(4, 0xffffffff);
+	/* [MS-XLS] 2.5.104 */
+	featHdr.write_shift(4, flags);
+
+	return featHdr;
+}
+
 function write_FEAT(ba, ws) {
 	/* [MS-XLS] 2.4.112 */
+	/* ISFPROTECTION */
+	if(ws['!protect']) write_biff_rec(ba, 0x0867 /* FeatHdr */, write_ws_protect_biff8(ws['!protect']));
+	/* ISFFEC2 */
 	var o = new_buf(19);
 	o.write_shift(4, 0x867); o.write_shift(4, 0); o.write_shift(4, 0);
 	o.write_shift(2, 3); o.write_shift(1, 1); o.write_shift(4, 0);
@@ -515,9 +561,9 @@ function write_ws_biff8(idx/*:number*/, opts, wb/*:Workbook*/) {
 	var range = safe_decode_range(ws['!ref'] || "A1");
 	var MAX_ROWS = b8 ? 65536 : 16384;
 	if(range.e.c > 0xFF || range.e.r >= MAX_ROWS) {
-		if(opts.WTF) throw new Error("Range " + (ws['!ref'] || "A1") + " exceeds format limit A1:IV16384");
+		if(opts.WTF) throw new Error("Range " + (ws['!ref'] || "A1") + " exceeds format limit A1:IV" + MAX_ROWS);
 		range.e.c = Math.min(range.e.c, 0xFF);
-		range.e.r = Math.min(range.e.c, MAX_ROWS-1);
+		range.e.r = Math.min(range.e.r, MAX_ROWS-1);
 	}
 
 	write_biff_rec(ba, 0x0809, write_BOF(wb, 0x10, opts));
@@ -537,6 +583,14 @@ function write_ws_biff8(idx/*:number*/, opts, wb/*:Workbook*/) {
 	/* Footer (string) */
 	write_biff_rec(ba, 0x0083 /* HCenter */, writebool(false));
 	write_biff_rec(ba, 0x0084 /* VCenter */, writebool(false));
+	/* PROTECTION */
+	if(ws['!protect']){
+		var sp = ws['!protect'];
+		/* [MS-XLS] 2.4.207 */
+		write_biff_rec(ba, 0x0012 /* Protect */, writeuint16(1));
+		/* [MS-XLS] 2.4.191 */
+		if(sp.password) write_biff_rec(ba, 0x0013 /* Password */, writeuint16(crypto_CreatePasswordVerifier_Method1(sp.password)));
+	}
 	/* ... */
 	if(b8) write_ws_cols_biff8(ba, ws["!cols"]);
 	/* ... */
@@ -552,12 +606,11 @@ function write_ws_biff8(idx/*:number*/, opts, wb/*:Workbook*/) {
 		if(dense) row = ws["!data"][R] || [];
 		rr = encode_row(R);
 		for(C = range.s.c; C <= range.e.c; ++C) {
-			ref = cols[C] + rr;
-			var cell = dense ? row[C] : ws[ref];
+			var cell = dense ? row[C] : ws[cols[C] + rr];
 			if(!cell) continue;
 			/* write cell */
 			write_ws_biff8_cell(ba, cell, R, C, opts, date1904);
-			if(b8 && cell.l) ws['!links'].push([ref, cell.l]);
+			if(b8 && cell.l) ws['!links'].push([cols[C] + rr, cell.l]);
 			if(cell.c) comments.push([cell.c, R, C]);
 		}
 	}
@@ -701,6 +754,9 @@ function write_biff_buf(wb/*:Workbook*/, opts/*:WriteOpts*/) {
 		if(range.e.c > 255) { // note: 255 is IV
 			if(typeof console != "undefined" && console.error) console.error("Worksheet '" + wb.SheetNames[i] + "' extends beyond column IV (255).  Data may be lost.");
 		}
+		if(range.e.r > 65535) {
+			if(typeof console != "undefined" && console.error) console.error("Worksheet '" + wb.SheetNames[i] + "' extends beyond row 65536.  Data may be lost.");
+		}
 	}
 
 	var o = opts || {};

bits/79_html.js

@@ -8,7 +8,7 @@ function html_to_sheet(str/*:string*/, _opts)/*:Workbook*/ {
 	if(!mtch) throw new Error("Invalid HTML: could not find <table>");
 	var mtch2/*:any*/ = str.match(/<\/table/i);
 	var i/*:number*/ = mtch.index, j/*:number*/ = mtch2 && mtch2.index || str.length;
-	var rows = split_regex(str.slice(i, j), /(:?<tr[^>]*>)/i, "<tr>");
+	var rows = split_regex(str.slice(i, j), /(:?<tr[^<>]*>)/i, "<tr>");
 	var R = -1, C = 0, RS = 0, CS = 0;
 	var range/*:Range*/ = {s:{r:10000000, c:10000000},e:{r:0,c:0}};
 	var merges/*:Array<Range>*/ = [];
@@ -48,6 +48,8 @@ function html_to_sheet(str/*:string*/, _opts)/*:Workbook*/ {
 				if(opts.UTC === false) o.v = utc_to_local(o.v);
 				if(!opts.cellDates) o = ({t:'n', v:datenum(o.v)}/*:any*/);
 				o.z = opts.dateNF || table_fmt[14];
+			} else if(m.charCodeAt(0) == 35 /* # */ && RBErr[m] != null) {
+				o.t = 'e'; o.w = m; o.v = RBErr[m];
 			}
 			if(o.cellText !== false) o.w = m;
 			if(dense) { if(!ws["!data"][R]) ws["!data"][R] = []; ws["!data"][R][C] = o; }
@@ -75,6 +77,10 @@ function make_html_row(ws/*:Worksheet*/, r/*:Range*/, R/*:number*/, o/*:Sheet2HT
 		if(RS < 0) continue;
 		var coord = encode_col(C) + encode_row(R);
 		var cell = dense ? (ws["!data"][R]||[])[C] : ws[coord];
+		if(cell && cell.t == 'n' && cell.v != null && !isFinite(cell.v)) {
+			if(isNaN(cell.v)) cell = ({t:'e', v:0x24, w:BErr[0x24]});
+			else cell = ({t:'e', v:0x07, w:BErr[0x07]});
+		}
 		/* TODO: html entities */
 		var w = (cell && cell.v != null) && (cell.h || escapehtml(cell.w || (format_cell(cell), cell.w) || "")) || "";
 		sp = ({}/*:any*/);
@@ -84,8 +90,9 @@ function make_html_row(ws/*:Worksheet*/, r/*:Range*/, R/*:number*/, o/*:Sheet2HT
 		else if(cell) {
 			sp["data-t"] = cell && cell.t || 'z';
 			// note: data-v is unaffected by the timezone interpretation
-			if(cell.v != null) sp["data-v"] = cell.v instanceof Date ? cell.v.toISOString() : cell.v;
+			if(cell.v != null) sp["data-v"] = escapehtml(cell.v instanceof Date ? cell.v.toISOString() : cell.v);
 			if(cell.z != null) sp["data-z"] = cell.z;
+			if(cell.f != null) sp["data-f"] = escapehtml(cell.f);
 			if(cell.l && (cell.l.Target || "#").charAt(0) != "#") w = '<a href="' + escapehtml(cell.l.Target) +'">' + w + '</a>';
 		}
 		sp.id = (o.id || "sjs") + "-" + coord;
@@ -99,7 +106,7 @@ var HTML_BEGIN = '<html><head><meta charset="utf-8"/><title>SheetJS Table Export
 var HTML_END = '</body></html>';
 
 function html_to_workbook(str/*:string*/, opts)/*:Workbook*/ {
-	var mtch = str.match(/<table[\s\S]*?>[\s\S]*?<\/table>/gi);
+	var mtch = str_match_xml_ig(str, "table");
 	if(!mtch || mtch.length == 0) throw new Error("Invalid HTML: could not find <table>");
 	if(mtch.length == 1) {
 		var w = sheet_to_workbook(html_to_sheet(mtch[0], opts), opts);
@@ -130,12 +137,6 @@ function sheet_to_html(ws/*:Worksheet*/, opts/*:?Sheet2HTMLOpts*//*, wb:?Workboo
 }
 
 function sheet_add_dom(ws/*:Worksheet*/, table/*:HTMLElement*/, _opts/*:?any*/)/*:Worksheet*/ {
-	var rows/*:HTMLCollection<HTMLTableRowElement>*/ = table.rows;
-	if(!rows) {
-		/* not an HTML TABLE */
-		throw "Unsupported origin when " + table.tagName + " is not a TABLE";
-	}
-
 	var opts = _opts || {};
 	var dense = ws["!data"] != null;
 	var or_R = 0, or_C = 0;
@@ -147,7 +148,6 @@ function sheet_add_dom(ws/*:Worksheet*/, table/*:HTMLElement*/, _opts/*:?any*/)/
 		}
 	}
 
-	var sheetRows = Math.min(opts.sheetRows||10000000, rows.length);
 	var range/*:Range*/ = {s:{r:0,c:0},e:{r:or_R,c:or_C}};
 	if(ws["!ref"]) {
 		var _range/*:Range*/ = decode_range(ws["!ref"]);
@@ -157,6 +157,15 @@ function sheet_add_dom(ws/*:Worksheet*/, table/*:HTMLElement*/, _opts/*:?any*/)/
 		range.e.c = Math.max(range.e.c, _range.e.c);
 		if(or_R == -1) range.e.r = or_R = _range.e.r + 1;
 	}
+
+
+	var rows/*:HTMLCollection<HTMLTableRowElement>*/ = table.rows;
+	if(!rows) {
+		/* not an HTML TABLE */
+		throw "Unsupported origin when " + table.tagName + " is not a TABLE";
+	}
+	var sheetRows = Math.min(opts.sheetRows||10000000, rows.length);
+
 	var merges/*:Array<Range>*/ = [], midx = 0;
 	var rowinfo/*:Array<RowInfo>*/ = ws["!rows"] || (ws["!rows"] = []);
 	var _R = 0, R = 0, _C = 0, C = 0, RS = 0, CS = 0;
@@ -173,18 +182,22 @@ function sheet_add_dom(ws/*:Worksheet*/, table/*:HTMLElement*/, _opts/*:?any*/)/
 			if (opts.display && is_dom_element_hidden(elt)) continue;
 			var v/*:?string*/ = elt.hasAttribute('data-v') ? elt.getAttribute('data-v') : elt.hasAttribute('v') ? elt.getAttribute('v') : htmldecode(elt.innerHTML);
 			var z/*:?string*/ = elt.getAttribute('data-z') || elt.getAttribute('z');
+			var f/*:?string*/ = elt.hasAttribute('data-f') ? elt.getAttribute('data-f') : elt.hasAttribute('f') ? elt.getAttribute('f') : null;
 			for(midx = 0; midx < merges.length; ++midx) {
 				var m/*:Range*/ = merges[midx];
 				if(m.s.c == C + or_C && m.s.r < R + or_R && R + or_R <= m.e.r) { C = m.e.c+1 - or_C; midx = -1; }
 			}
 			/* TODO: figure out how to extract nonstandard mso- style */
 			CS = +elt.getAttribute("colspan") || 1;
-			if( ((RS = (+elt.getAttribute("rowspan") || 1)))>1 || CS>1) merges.push({s:{r:R + or_R,c:C + or_C},e:{r:R + or_R + (RS||1) - 1, c:C + or_C + (CS||1) - 1}});
+			if( ((RS = (+elt.getAttribute("rowspan") || 1)))>1 || CS>1) {
+				merges.push({s:{r:R + or_R,c:C + or_C},e:{r:R + or_R + (RS||1) - 1, c:C + or_C + (CS||1) - 1}});
+			}
 			var o/*:Cell*/ = {t:'s', v:v};
 			var _t/*:string*/ = elt.getAttribute("data-t") || elt.getAttribute("t") || "";
 			if(v != null) {
 				if(v.length == 0) o.t = _t || 'z';
 				else if(opts.raw || v.trim().length == 0 || _t == "s"){}
+				else if(_t == "e" && BErr[+v]) o = {t:'e', v:+v, w: BErr[+v]};
 				else if(v === 'TRUE') o = {t:'b', v:true};
 				else if(v === 'FALSE') o = {t:'b', v:false};
 				else if(!isNaN(fuzzynum(v))) o = {t:'n', v:fuzzynum(v)};
@@ -193,7 +206,7 @@ function sheet_add_dom(ws/*:Worksheet*/, table/*:HTMLElement*/, _opts/*:?any*/)/
 					if(opts.UTC) o.v = local_to_utc(o.v);
 					if(!opts.cellDates) o = ({t:'n', v:datenum(o.v)}/*:any*/);
 					o.z = opts.dateNF || table_fmt[14];
-				}
+				} else if(v.charCodeAt(0) == 35 /* # */ && RBErr[v] != null) o = ({t:'e', v: RBErr[v], w: v});
 			}
 			if(o.z === undefined && z != null) o.z = z;
 			/* The first link is used.  Links are assumed to be fully specified.
@@ -203,6 +216,7 @@ function sheet_add_dom(ws/*:Worksheet*/, table/*:HTMLElement*/, _opts/*:?any*/)/
 				l = Aelts[Aelti].getAttribute("href"); if(l.charAt(0) != "#") break;
 			}
 			if(l && l.charAt(0) != "#" &&	l.slice(0, 11).toLowerCase() != 'javascript:') o.l = ({ Target: l });
+			if(f != null) o.f = f;
 			if(dense) { if(!ws["!data"][R + or_R]) ws["!data"][R + or_R] = []; ws["!data"][R + or_R][C + or_C] = o; }
 			else ws[encode_cell({c:C + or_C, r:R + or_R})] = o;
 			if(range.e.c < C + or_C) range.e.c = C + or_C;

bits/80_parseods.js

@@ -5,9 +5,9 @@ function parse_text_p(text/*:string*//*::, tag*/)/*:Array<any>*/ {
 		.replace(/[\t\r\n]/g, " ").trim().replace(/ +/g, " ")
 		.replace(/<text:s\/>/g," ")
 		.replace(/<text:s text:c="(\d+)"\/>/g, function($$,$1) { return Array(parseInt($1,10)+1).join(" "); })
-		.replace(/<text:tab[^>]*\/>/g,"\t")
+		.replace(/<text:tab[^<>]*\/>/g,"\t")
 		.replace(/<text:line-break\/>/g,"\n");
-	var v = unescapexml(fixed.replace(/<[^>]*>/g,""));
+	var v = unescapexml(fixed.replace(/<[^<>]*>/g,""));
 
 	return [v];
 }
@@ -17,10 +17,10 @@ function parse_ods_styles(d/*:string*/, _opts, _nfm) {
 	var number_format_map = _nfm || {};
 	var str = xlml_normalize(d);
 	xlmlregex.lastIndex = 0;
-	str = str_remove_ng(str, "<!--", "-->").replace(/<!DOCTYPE[^\[]*\[[^\]]*\]>/gm,"");
+	str = remove_doctype(str_remove_ng(str, "<!--", "-->"));
 	var Rn, NFtag, NF = "", tNF = "", y, etpos = 0, tidx = -1, infmt = false, payload = "";
 	while((Rn = xlmlregex.exec(str))) {
-		switch((Rn[3]=Rn[3].replace(/_.*$/,""))) {
+		switch((Rn[3]=Rn[3].replace(/_[\s\S]*$/,""))) {
 		/* Number Format Definitions */
 		case 'number-style': // <number:number-style> 16.29.2
 		case 'currency-style': // <number:currency-style> 16.29.8
@@ -247,16 +247,16 @@ function parse_content_xml(d/*:string*/, _opts, _nfm)/*:Workbook*/ {
 		var Sheets = {}, SheetNames/*:Array<string>*/ = [];
 		var ws = ({}/*:any*/); if(opts.dense) ws["!data"] = [];
 		var Rn, q/*:: :any = ({t:"", v:null, z:null, w:"",c:[],}:any)*/;
-		var ctag = ({value:""}/*:any*/);
+		var ctag = ({value:""}/*:any*/), ctag2 = ({}/*:any*/);
 		var textp = "", textpidx = 0, textptag/*:: = {}*/, oldtextp = "", oldtextpidx = 0;
 		var textR = [], oldtextR = [];
 		var R = -1, C = -1, range = {s: {r:1000000,c:10000000}, e: {r:0, c:0}};
 		var row_ol = 0;
-		var number_format_map = _nfm || {}, styles = {};
+		var number_format_map = _nfm || {}, styles = {}, tstyles = {};
 		var merges/*:Array<Range>*/ = [], mrange = {}, mR = 0, mC = 0;
 		var rowinfo/*:Array<RowInfo>*/ = [], rowpeat = 1, colpeat = 1;
 		var arrayf/*:Array<[Range, string]>*/ = [];
-		var WB = {Names:[], WBProps:{}};
+		var WB = {Names:[], WBProps:{}, Sheets:[]};
 		var atag = ({}/*:any*/);
 		var _Ref/*:[string, string]*/ = ["", ""];
 		var comments/*:Array<Comment>*/ = [], comment/*:Comment*/ = ({}/*:any*/);
@@ -264,8 +264,8 @@ function parse_content_xml(d/*:string*/, _opts, _nfm)/*:Workbook*/ {
 		var isstub = false, intable = false;
 		var i = 0;
 		xlmlregex.lastIndex = 0;
-		str = str_remove_ng(str, "<!--", "-->").replace(/<!DOCTYPE[^\[]*\[[^\]]*\]>/gm,"");
-		while((Rn = xlmlregex.exec(str))) switch((Rn[3]=Rn[3].replace(/_.*$/,""))) {
+		str = remove_doctype(str_remove_ng(str, "<!--", "-->"));
+		while((Rn = xlmlregex.exec(str))) switch((Rn[3]=Rn[3].replace(/_[\s\S]*$/,""))) {
 
 			case 'table': case '工作表': // 9.1.2 <table:table>
 				if(Rn[1]==='/') {
@@ -282,6 +282,10 @@ function parse_content_xml(d/*:string*/, _opts, _nfm)/*:Workbook*/ {
 					if(typeof JSON !== 'undefined') JSON.stringify(sheetag);
 					SheetNames.push(sheetag.name);
 					Sheets[sheetag.name] = ws;
+					WB.Sheets.push({
+						/* TODO: CodeName */
+						Hidden: (tstyles[sheetag["style-name"]] && tstyles[sheetag["style-name"]]["display"] ? (parsexmlbool(tstyles[sheetag["style-name"]]["display"]) ? 0 : 1) : 0)
+					});
 					intable = false;
 				}
 				else if(Rn[0].charAt(Rn[0].length-2) !== '/') {
@@ -306,10 +310,18 @@ function parse_content_xml(d/*:string*/, _opts, _nfm)/*:Workbook*/ {
 				if(rowpeat < 10) for(i = 0; i < rowpeat; ++i) if(row_ol > 0) rowinfo[R + i] = {level: row_ol};
 				C = -1; break;
 			case 'covered-table-cell': // 9.1.5 <table:covered-table-cell>
-				if(Rn[1] !== '/') ++C;
-				if(opts.sheetStubs) {
-					if(opts.dense) { if(!ws["!data"][R]) ws["!data"][R] = []; ws["!data"][R][C] = {t:'z'}; }
-					else ws[encode_cell({r:R,c:C})] = {t:'z'};
+				if(Rn[1] !== '/') {
+					++C;
+					ctag = parsexmltag(Rn[0], false);
+					colpeat = parseInt(ctag['number-columns-repeated']||"1",10) || 1;
+					if(opts.sheetStubs) {
+						while(colpeat-- > 0) {
+							if(opts.dense) { if(!ws["!data"][R]) ws["!data"][R] = []; ws["!data"][R][C] = {t:'z'}; }
+							else ws[encode_cell({r:R,c:C})] = {t:'z'};
+							++C;
+						} --C;
+					}
+					else C += colpeat - 1;
 				}
 				textp = ""; textR = [];
 				break; /* stub */
@@ -317,7 +329,7 @@ function parse_content_xml(d/*:string*/, _opts, _nfm)/*:Workbook*/ {
 				if(Rn[0].charAt(Rn[0].length-2) === '/') {
 					++C;
 					ctag = parsexmltag(Rn[0], false);
-					colpeat = parseInt(ctag['number-columns-repeated']||"1", 10);
+					colpeat = parseInt(ctag['number-columns-repeated']||"1", 10)||1;
 					q = ({t:'z', v:null/*:: , z:null, w:"",c:[]*/}/*:any*/);
 					if(ctag.formula && opts.cellFormula != false) q.f = ods_to_csf_formula(unescapexml(ctag.formula));
 					if(ctag["style-name"] && styles[ctag["style-name"]]) q.z = styles[ctag["style-name"]];
@@ -341,6 +353,7 @@ function parse_content_xml(d/*:string*/, _opts, _nfm)/*:Workbook*/ {
 					if(R < range.s.r) range.s.r = R;
 					if(rptR > range.e.r) range.e.r = rptR;
 					ctag = parsexmltag(Rn[0], false);
+					ctag2 = parsexmltagraw(Rn[0], true);
 					comments = []; comment = ({}/*:any*/);
 					q = ({t:ctag['数据类型'] || ctag['value-type'], v:null/*:: , z:null, w:"",c:[]*/}/*:any*/);
 					if(ctag["style-name"] && styles[ctag["style-name"]]) q.z = styles[ctag["style-name"]];
@@ -360,10 +373,12 @@ function parse_content_xml(d/*:string*/, _opts, _nfm)/*:Workbook*/ {
 									q.F = arrayf[i][1];
 					}
 					if(ctag['number-columns-spanned'] || ctag['number-rows-spanned']) {
-						mR = parseInt(ctag['number-rows-spanned'],10) || 0;
-						mC = parseInt(ctag['number-columns-spanned'],10) || 0;
-						mrange = {s: {r:R,c:C}, e:{r:R + mR-1,c:C + mC-1}};
-						merges.push(mrange);
+						mR = parseInt(ctag['number-rows-spanned']||"1",10) || 1;
+						mC = parseInt(ctag['number-columns-spanned']||"1",10) || 1;
+						if(mR * mC > 1) {
+							mrange = {s: {r:R,c:C}, e:{r:R + mR-1,c:C + mC-1}};
+							merges.push(mrange);
+						}
 					}
 
 					/* 19.675.2 table:number-columns-repeated */
@@ -394,6 +409,9 @@ function parse_content_xml(d/*:string*/, _opts, _nfm)/*:Workbook*/ {
 					}
 				} else {
 					isstub = false;
+					if(ctag2['calcext:value-type'] == "error" && RBErr[textp] != null) {
+						q.t = 'e'; q.w = textp; q.v = RBErr[textp];
+					}
 					if(q.t === 's') {
 						q.v = textp || '';
 						if(textR.length) q.R = textR;
@@ -515,12 +533,16 @@ function parse_content_xml(d/*:string*/, _opts, _nfm)/*:Workbook*/ {
 			case 'style': { // 16.2 <style:style>
 				var styletag = parsexmltag(Rn[0], false);
 				if(styletag["family"] == "table-cell" && number_format_map[styletag["data-style-name"]]) styles[styletag["name"]] = number_format_map[styletag["data-style-name"]];
+				else if(styletag["family"] == "table") tstyles[styletag["name"]] = styletag;
 			} break;
 			case 'map': break; // 16.3 <style:map>
 			case 'font-face': break; // 16.21 <style:font-face>
 
 			case 'paragraph-properties': break; // 17.6 <style:paragraph-properties>
-			case 'table-properties': break; // 17.15 <style:table-properties>
+			case 'table-properties': { // 17.15 <style:table-properties>
+				var proptag = parsexmltag(Rn[0], false);
+				if(styletag && styletag.family == "table") styletag.display = proptag.display;
+			} break;
 			case 'table-column-properties': break; // 17.16 <style:table-column-properties>
 			case 'table-row-properties': break; // 17.17 <style:table-row-properties>
 			case 'table-cell-properties': break; // 17.18 <style:table-cell-properties>
@@ -742,6 +764,10 @@ function parse_content_xml(d/*:string*/, _opts, _nfm)/*:Workbook*/ {
 						_Ref = ods_to_csf_3D(atag.Target.slice(1));
 						atag.Target = "#" + _Ref[0] + "!" + _Ref[1];
 					} else if(atag.Target.match(/^\.\.[\\\/]/)) atag.Target = atag.Target.slice(3);
+					/* Appendix D.2 Hyperlink Titles */
+					if(atag.title) {
+						atag.Tooltip = unescapexml(atag.title); delete atag.title;
+					}
 				}
 				break;
 
@@ -792,4 +818,3 @@ function parse_fods(data/*:string*/, opts/*:?ParseOpts*/)/*:Workbook*/ {
 	wb.bookType = "fods";
 	return wb;
 }
-

bits/81_writeods.js

@@ -67,7 +67,7 @@ function write_number_format_ods(nf/*:string*/, nfidx/*:string*/)/*:string*/ {
 		if((t=nf.match(/# (\?+)\/(\d+)/))) { payload += writextag("number:fraction", null, {"number:min-integer-digits":0, "number:min-numerator-digits": t[1].length, "number:denominator-value": +t[2]}); break j; }
 
 		/* percentages */
-		if((t=nf.match(/(\d+)(|\.\d+)%/))) { type = "percentage"; payload += writextag("number:number", null, {"number:decimal-places": t[2] && t.length - 1 || 0, "number:min-decimal-places": t[2] && t.length - 1 || 0, "number:min-integer-digits": t[1].length }) + "<number:text>%</number:text>"; break j; }
+		if((t=nf.match(/\b(\d+)(|\.\d+)%/))) { type = "percentage"; payload += writextag("number:number", null, {"number:decimal-places": t[2] && t.length - 1 || 0, "number:min-decimal-places": t[2] && t.length - 1 || 0, "number:min-integer-digits": t[1].length }) + "<number:text>%</number:text>"; break j; }
 
 		/* datetime */
 		var has_time = false;
@@ -196,7 +196,7 @@ function write_names_ods(Names, SheetNames, idx) {
 		return "        " + writextag("table:named-range", null, {
 			"table:name": name.Name,
 			"table:cell-range-address": odsref,
-			"table:base-cell-address": odsref.replace(/[\.]?[^\.]*$/, ".$A$1")
+			"table:base-cell-address": odsref.replace(/[\.][^\.]*$/, ".$A$1")
 		});
 	}).join("\n") + "\n      </table:named-expressions>\n";
 }
@@ -214,7 +214,9 @@ var write_content_ods/*:{(wb:any, opts:any):string}*/ = /* @__PURE__ */(function
 	var write_ws = function(ws, wb/*:Workbook*/, i/*:number*/, opts, nfs, date1904)/*:string*/ {
 		/* Section 9 Tables */
 		var o/*:Array<string>*/ = [];
-		o.push('      <table:table table:name="' + escapexml(wb.SheetNames[i]) + '" table:style-name="ta1">\n');
+		var tstyle = "ta1";
+		if(((((wb||{}).Workbook||{}).Sheets||[])[i]||{}).Hidden) tstyle = "ta2";
+		o.push('      <table:table table:name="' + escapexml(wb.SheetNames[i]) + '" table:style-name="' + tstyle + '">\n');
 		var R=0,C=0, range = decode_range(ws['!ref']||"A1");
 		var marr/*:Array<Range>*/ = ws['!merges'] || [], mi = 0;
 		var dense = ws["!data"] != null;
@@ -262,9 +264,22 @@ var write_content_ods/*:{(wb:any, opts:any):string}*/ = /* @__PURE__ */(function
 						ct['office:boolean-value'] = (cell.v ? 'true' : 'false');
 						break;
 					case 'n':
-						textp = (cell.w||String(cell.v||0));
-						ct['office:value-type'] = "float";
-						ct['office:value'] = (cell.v||0);
+						if(!isFinite(cell.v)) {
+							if(isNaN(cell.v)) {
+								textp = "#NUM!";
+								ct['table:formula'] = "of:=#NUM!";
+							} else {
+								textp = "#DIV/0!";
+								ct['table:formula'] = "of:=" + (cell.v < 0 ? "-" : "") + "1/0";
+							}
+							ct['office:string-value'] = "";
+							ct['office:value-type'] = "string";
+							ct['calcext:value-type'] = "error";
+						} else {
+							textp = (cell.w||String(cell.v||0));
+							ct['office:value-type'] = "float";
+							ct['office:value'] = (cell.v||0);
+						}
 						break;
 					case 's': case 'str':
 						textp = cell.v == null ? "" : cell.v;
@@ -349,6 +364,9 @@ var write_content_ods/*:{(wb:any, opts:any):string}*/ = /* @__PURE__ */(function
 		o.push('  <style:style style:name="ta1" style:family="table" style:master-page-name="mp1">\n');
 		o.push('   <style:table-properties table:display="true" style:writing-mode="lr-tb"/>\n');
 		o.push('  </style:style>\n');
+		o.push('  <style:style style:name="ta2" style:family="table" style:master-page-name="mp1">\n');
+		o.push('   <style:table-properties table:display="false" style:writing-mode="lr-tb"/>\n');
+		o.push('  </style:style>\n');
 
 		o.push('  <number:date-style style:name="N37" number:automatic-order="true">\n');
 		o.push('   <number:month number:style="long"/>\n');
@@ -436,7 +454,7 @@ var write_content_ods/*:{(wb:any, opts:any):string}*/ = /* @__PURE__ */(function
 
 		if(opts.bookType == "fods") {
 			o.push('<office:document' + attr + fods + '>\n');
-			o.push(write_meta_ods().replace(/<office:document-meta.*?>/, "").replace(/<\/office:document-meta>/, "") + "\n");
+			o.push(write_meta_ods().replace(/<office:document-meta[^<>]*?>/, "").replace(/<\/office:document-meta>/, "") + "\n");
 			// TODO: settings (equiv of settings.xml for ODS)
 		} else o.push('<office:document-content' + attr  + '>\n');
 		// o.push('  <office:scripts/>\n');

bits/83_numbers.js

@@ -1117,7 +1117,7 @@ function s5s_to_iwa_comment(s5s) {
   return out;
 }
 function parse_TST_TableModelArchive(M, root, ws, opts) {
-  var _a, _b, _c, _d, _e, _f, _g, _h, _i, _j;
+  var _a, _b, _c, _d, _e, _f, _g, _h, _i, _j, _k, _l, _m, _n;
   var pb = parse_shallow(root.data);
   var range = { s: { r: 0, c: 0 }, e: { r: 0, c: 0 } };
   range.e.r = (varint_to_i32(pb[6][0].data) >>> 0) - 1;
@@ -1196,6 +1196,38 @@ function parse_TST_TableModelArchive(M, root, ws, opts) {
       };
     });
   }
+  if (!((_k = ws["!merges"]) == null ? void 0 : _k.length) && ((_l = pb[47]) == null ? void 0 : _l[0])) {
+    var merge_owner = parse_shallow(pb[47][0].data);
+    if ((_m = merge_owner[2]) == null ? void 0 : _m[0]) {
+      var formula_store = parse_shallow(merge_owner[2][0].data);
+      if ((_n = formula_store[3]) == null ? void 0 : _n[0]) {
+        ws["!merges"] = mappa(formula_store[3], function(u) {
+          var _a2, _b2, _c2, _d2, _e2;
+          var formula_pair = parse_shallow(u);
+          var formula = parse_shallow(formula_pair[2][0].data);
+          var AST_node_array = parse_shallow(formula[1][0].data);
+          if (!((_a2 = AST_node_array[1]) == null ? void 0 : _a2[0]))
+            return;
+          var AST_node0 = parse_shallow(AST_node_array[1][0].data);
+          var AST_node_type = varint_to_i32(AST_node0[1][0].data);
+          if (AST_node_type != 67)
+            return;
+          var AST_colon_tract = parse_shallow(AST_node0[40][0].data);
+          if (!((_b2 = AST_colon_tract[3]) == null ? void 0 : _b2[0]) || !((_c2 = AST_colon_tract[4]) == null ? void 0 : _c2[0]))
+            return;
+          var colrange = parse_shallow(AST_colon_tract[3][0].data);
+          var rowrange = parse_shallow(AST_colon_tract[4][0].data);
+          var c = varint_to_i32(colrange[1][0].data);
+          var C = ((_d2 = colrange[2]) == null ? void 0 : _d2[0]) ? varint_to_i32(colrange[2][0].data) : c;
+          var r = varint_to_i32(rowrange[1][0].data);
+          var R = ((_e2 = rowrange[2]) == null ? void 0 : _e2[0]) ? varint_to_i32(rowrange[2][0].data) : r;
+          return { s: { r: r, c: c }, e: { r: R, c: C } };
+        }).filter(function(x) {
+          return x != null;
+        });
+      }
+    }
+  }
 }
 function parse_TST_TableInfoArchive(M, root, opts) {
   var pb = parse_shallow(root.data);
@@ -1512,7 +1544,7 @@ function numbers_add_meta(mlist, newid, newloc) {
   mlist[3].push({ type: 2, data: write_shallow([
     [],
     [{ type: 0, data: write_varint49(newid) }],
-    [{ type: 2, data: stru8(newloc.replace(/-.*$/, "")) }],
+    [{ type: 2, data: stru8(newloc.replace(/-[\s\S]*$/, "")) }],
     [{ type: 2, data: stru8(newloc) }],
     [{ type: 2, data: new Uint8Array([2, 0, 0]) }],
     [{ type: 2, data: new Uint8Array([2, 0, 0]) }],

bits/85_parsezip.js

@@ -204,7 +204,7 @@ function parse_zip(zip/*:ZIP*/, opts/*:?ParseOpts*/)/*:Workbook*/ {
 		if(wbrels && wbrels[i]) {
 			path = 'xl/' + (wbrels[i][1]).replace(/[\/]?xl\//, "");
 			if(!safegetzipfile(zip, path)) path = wbrels[i][1];
-			if(!safegetzipfile(zip, path)) path = wbrelsfile.replace(/_rels\/.*$/,"") + wbrels[i][1];
+			if(!safegetzipfile(zip, path)) path = wbrelsfile.replace(/_rels\/[\S\s]*$/,"") + wbrels[i][1];
 			stype = wbrels[i][2];
 		} else {
 			path = 'xl/worksheets/sheet'+(i+1-nmode)+"." + wbext;

bits/87_read.js

@@ -75,6 +75,8 @@ function readSync(data/*:RawData*/, opts/*:?ParseOpts*/)/*:Workbook*/ {
 	var o = opts||{};
 	if(o.codepage && typeof $cptable === "undefined") console.error("Codepage tables are not loaded.  Non-ASCII characters may not give expected results");
 	if(typeof ArrayBuffer !== 'undefined' && data instanceof ArrayBuffer) return readSync(new Uint8Array(data), (o = dup(o), o.type = "array", o));
+	/* Javet projects `byte[]` to `Int8Array` */
+	if(typeof Int8Array !== 'undefined' && data instanceof Int8Array) return readSync(new Uint8Array(data.buffer, data.byteOffset, data.length), o);
 	if(typeof Uint8Array !== 'undefined' && data instanceof Uint8Array && !o.type) o.type = typeof Deno !== "undefined" ? "buffer" : "array";
 	var d = data, n = [0,0,0,0], str = false;
 	if(o.cellStyles) { o.cellNF = true; o.sheetStubs = true; }
@@ -97,7 +99,7 @@ function readSync(data/*:RawData*/, opts/*:?ParseOpts*/)/*:Workbook*/ {
 			if(n[1] === 0x49 && n[2] === 0x2a && n[3] === 0x00) throw new Error("TIFF Image File is not a spreadsheet");
 			if(n[1] === 0x44) return read_wb_ID(d, o);
 			break;
-		case 0x54: if(n[1] === 0x41 && n[2] === 0x42 && n[3] === 0x4C) return DIF.to_workbook(d, o); break;
+		case 0x54: if(n[1] === 0x41 && n[2] === 0x42 && n[3] === 0x4C) return read_wb_TABL(d, o); break;
 		case 0x50: return (n[1] === 0x4B && n[2] < 0x09 && n[3] < 0x09) ? read_zip(d, o) : read_prn(data, d, o, str);
 		case 0xEF: return n[3] === 0x3C ? parse_xlml(d, o) : read_prn(data, d, o, str);
 		case 0xFF:

bits/88_write.js

@@ -111,7 +111,7 @@ function write_binary_type(out, opts/*:WriteOpts*/)/*:any*/ {
 
 function writeSyncXLSX(wb/*:Workbook*/, opts/*:?WriteOpts*/) {
 	reset_cp();
-	check_wb(wb);
+	if(!opts || !opts.unsafe) check_wb(wb);
 	var o = dup(opts||{});
 	if(o.cellStyles) { o.cellNF = true; o.sheetStubs = true; }
 	if(o.type == "array") { o.type = "binary"; var out/*:string*/ = (writeSyncXLSX(wb, o)/*:any*/); o.type = "array"; return s2ab(out); }
@@ -120,7 +120,7 @@ function writeSyncXLSX(wb/*:Workbook*/, opts/*:?WriteOpts*/) {
 
 function writeSync(wb/*:Workbook*/, opts/*:?WriteOpts*/) {
 	reset_cp();
-	check_wb(wb);
+	if(!opts || !opts.unsafe) check_wb(wb);
 	var o = dup(opts||{});
 	if(o.cellStyles) { o.cellNF = true; o.sheetStubs = true; }
 	if(o.type == "array") { o.type = "binary"; var out/*:string*/ = (writeSync(wb, o)/*:any*/); o.type = "array"; return s2ab(out); }

bits/90_utils.js

@@ -24,7 +24,7 @@ function make_json_row(sheet/*:Worksheet*/, r/*:Range*/, R/*:number*/, cols/*:Ar
 		switch(val.t){
 			case 'z': if(v == null) break; continue;
 			case 'e': v = (v == 0 ? null : void 0); break;
-			case 's': case 'b':
+			case 's': case 'b': break;
 			case 'n': if(!val.z || !fmt_is_date(val.z)) break;
 			v = numdate(v); // TODO: date1904 setting should also be stored in worksheet object
 			if(typeof v == "number") break;
@@ -104,7 +104,7 @@ function sheet_to_json(sheet/*:Worksheet*/, opts/*:?Sheet2JSONOpts*/) {
 }
 
 var qreg = /"/g;
-function make_csv_row(sheet/*:Worksheet*/, r/*:Range*/, R/*:number*/, cols/*:Array<string>*/, fs/*:number*/, rs/*:number*/, FS/*:string*/, o/*:Sheet2CSVOpts*/)/*:?string*/ {
+function make_csv_row(sheet/*:Worksheet*/, r/*:Range*/, R/*:number*/, cols/*:Array<string>*/, fs/*:number*/, rs/*:number*/, FS/*:string*/, w/*:number*/, o/*:Sheet2CSVOpts*/)/*:?string*/ {
 	var isempty = true;
 	var row/*:Array<string>*/ = [], txt = "", rr = encode_row(R);
 	var dense = sheet["!data"] != null;
@@ -117,7 +117,7 @@ function make_csv_row(sheet/*:Worksheet*/, r/*:Range*/, R/*:number*/, cols/*:Arr
 			isempty = false;
 			txt = ''+(o.rawNumbers && val.t == "n" ? val.v : format_cell(val, null, o));
 			for(var i = 0, cc = 0; i !== txt.length; ++i) if((cc = txt.charCodeAt(i)) === fs || cc === rs || cc === 34 || o.forceQuotes) {txt = "\"" + txt.replace(qreg, '""') + "\""; break; }
-			if(txt == "ID") txt = '"ID"';
+			if(txt == "ID" && w == 0 && row.length == 0) txt = '"ID"';
 		} else if(val.f != null && !val.F) {
 			isempty = false;
 			txt = '=' + val.f; if(txt.indexOf(",") >= 0) txt = '"' + txt.replace(qreg, '""') + '"';
@@ -144,7 +144,7 @@ function sheet_to_csv(sheet/*:Worksheet*/, opts/*:?Sheet2CSVOpts*/)/*:string*/ {
 	var w = 0;
 	for(var R = r.s.r; R <= r.e.r; ++R) {
 		if ((rowinfo[R]||{}).hidden) continue;
-		row = make_csv_row(sheet, r, R, cols, fs, rs, FS, o);
+		row = make_csv_row(sheet, r, R, cols, fs, rs, FS, w, o);
 		if(row == null) { continue; }
 		if(row || (o.blankrows !== false)) out.push((w++ ? RS : "") + row);
 	}
@@ -159,7 +159,7 @@ function sheet_to_txt(sheet/*:Worksheet*/, opts/*:?Sheet2CSVOpts*/) {
 	return String.fromCharCode(255) + String.fromCharCode(254) + o;
 }
 
-function sheet_to_formulae(sheet/*:Worksheet*/)/*:Array<string>*/ {
+function sheet_to_formulae(sheet/*:Worksheet*/, opts/*:?Sheet2FormulaOpts*/)/*:Array<string>*/ {
 	var y = "", x, val="";
 	if(sheet == null || sheet["!ref"] == null) return [];
 	var r = safe_decode_range(sheet['!ref']), rr = "", cols/*:Array<string>*/ = [], C;
@@ -180,6 +180,7 @@ function sheet_to_formulae(sheet/*:Worksheet*/)/*:Array<string>*/ {
 				if(y.indexOf(":") == -1) y = y + ":" + y;
 			}
 			if(x.f != null) val = x.f;
+			else if(opts && opts.values === false) continue;
 			else if(x.t == 'z') continue;
 			else if(x.t == 'n' && x.v != null) val = "" + x.v;
 			else if(x.t == 'b') val = x.v ? "TRUE" : "FALSE";
@@ -309,9 +310,9 @@ function book_append_sheet(wb/*:Workbook*/, ws/*:Worksheet*/, name/*:?string*/,
 	if(!name) for(; i <= 0xFFFF; ++i, name = undefined) if(wb.SheetNames.indexOf(name = "Sheet" + i) == -1) break;
 	if(!name || wb.SheetNames.length >= 0xFFFF) throw new Error("Too many worksheets");
 	if(roll && wb.SheetNames.indexOf(name) >= 0 && name.length < 32) {
-		var m = name.match(/(^.*?)(\d+)$/);
-		i = m && +m[2] || 0;
-		var root = m && m[1] || name;
+		var m = name.match(/\d+$/); // at this point, name length is capped at 32
+		i = m && +m[0] || 0;
+		var root = m && name.slice(0, m.index) || name;
 		for(++i; i <= 0xFFFF; ++i) if(wb.SheetNames.indexOf(name = root + i) == -1) break;
 	}
 	check_ws_name(name);

bits/97_node.js

@@ -19,7 +19,7 @@ function write_csv_stream(sheet/*:Worksheet*/, opts/*:?Sheet2CSVOpts*/) {
 		while(R <= r.e.r) {
 			++R;
 			if ((rowinfo[R-1]||{}).hidden) continue;
-			row = make_csv_row(sheet, r, R-1, cols, fs, rs, FS, o);
+			row = make_csv_row(sheet, r, R-1, cols, fs, rs, FS, w, o);
 			if(row != null) {
 				if(row || (o.blankrows !== false)) return stream.push((w++ ? RS : "") + row);
 			}
@@ -103,7 +103,10 @@ function write_json_stream(sheet/*:Worksheet*/, opts/*:?Sheet2CSVOpts*/) {
 	R = r.s.r + offset;
 	stream._read = function() {
 		while(R <= r.e.r) {
-			if ((rowinfo[R-1]||{}).hidden) continue;
+			if ((rowinfo[R]||{}).hidden) {
+				++R;
+				continue;
+			};
 			var row = make_json_row(sheet, r, R, cols, header, hdr, o);
 			++R;
 			if((row.isempty === false) || (header === 1 ? o.blankrows !== false : !!o.blankrows)) {
@@ -116,9 +119,164 @@ function write_json_stream(sheet/*:Worksheet*/, opts/*:?Sheet2CSVOpts*/) {
 	return stream;
 }
 
+function write_xlml_stream(wb/*:Workbook*/, o/*:?Sheet2XLMLOpts*/) {
+	var stream = _Readable();
+	var opts = o == null ? {} : o;
+	var stride = +opts.stride || 10;
+	if(!wb.SSF) wb.SSF = dup(table_fmt);
+	if(wb.SSF) {
+		make_ssf(); SSF_load_table(wb.SSF);
+		// $FlowIgnore
+		opts.revssf = evert_num(wb.SSF); opts.revssf[wb.SSF[65535]] = 0;
+		opts.ssf = wb.SSF;
+		opts.cellXfs = [];
+		get_cell_style(opts.cellXfs, {}, {revssf:{"General":0}});
+	}
+
+	/* do one pass to determine styles since they must be added before tables */
+	wb.SheetNames.forEach(function(n) {
+		var ws = wb.Sheets[n];
+		if(!ws || !ws["!ref"]) return;
+		var range = decode_range(ws["!ref"]);
+		var dense = ws["!data"] != null;
+		var ddata = dense ? ws["!data"] : [];
+		var addr = {r:0,c:0};
+		for(var R = range.s.r; R <= range.e.r; ++R) {
+			addr.r = R;
+			if(dense && !ddata[R]) continue;
+			for(var C = range.s.c; C <= range.e.c; ++C) {
+				addr.c = C;
+				var cell = dense ? ddata[R][C] : ws[encode_col(C) + encode_row(R)];
+				if(!cell) continue;
+				if(cell.t == "d" && cell.z == null) { cell = dup(cell); cell.z = table_fmt[14]; }
+				void get_cell_style(opts.cellXfs, cell, opts);
+			}
+		}
+	});
+	var sty = write_sty_xlml(wb, opts);
+
+	var stage = 0, wsidx = 0, ws = wb.Sheets[wb.SheetNames[wsidx]], range = safe_decode_range(ws), R = -1, T = false;
+
+	var marr = [], mi = 0, dense = false, darr = [], addr = {r:0,c:0};
+
+	stream._read = function() { switch(stage) {
+		/* header */
+		case 0: {
+			stage = 1;
+			stream.push(XML_HEADER);
+			stream.push("<Workbook" + wxt_helper({
+				'xmlns':      XLMLNS.ss,
+				'xmlns:o':    XLMLNS.o,
+				'xmlns:x':    XLMLNS.x,
+				'xmlns:ss':   XLMLNS.ss,
+				'xmlns:dt':   XLMLNS.dt,
+				'xmlns:html': XLMLNS.html
+			}) + ">");
+		} break;
+
+		/* preamble */
+		case 1: {
+			stage = 2;
+			stream.push(write_props_xlml(wb, opts));
+			stream.push(write_wb_xlml(wb, opts));
+		} break;
+
+		/* style and name tables */
+		case 2: {
+			stage = 3;
+			stream.push(sty);
+			stream.push(write_names_xlml(wb, opts));
+		} break;
+
+		/* worksheet preamble */
+		case 3: {
+			T = false;
+			if(wsidx >= wb.SheetNames.length) { stage = -1; stream.push(""); break; }
+
+			stream.push("<Worksheet" + wxt_helper({ "ss:Name": escapexml(wb.SheetNames[wsidx])}) + ">");
+
+			ws = wb.Sheets[wb.SheetNames[wsidx]];
+			if(!ws) { stream.push("</Worksheet>"); return void ++wsidx; }
+
+			var names = write_ws_xlml_names(ws, opts, wsidx, wb);
+			if(names.length) stream.push("<Names>" + names + "</Names>");
+
+			if(!ws["!ref"]) return (stage = 5);
+			range = safe_decode_range(ws["!ref"]);
+			R = range.s.r;
+			stage = 4;
+		} break;
+
+		/* worksheet intramble */
+		case 4: {
+			if(R < 0 || R > range.e.r) { if(T) stream.push("</Table>"); return void (stage = 5); }
+
+			if(R <= range.s.r) {
+				if(ws['!cols']) ws['!cols'].forEach(function(n, i) {
+					process_col(n);
+					var w = !!n.width;
+					var p = col_obj_w(i, n);
+					var k/*:any*/ = {"ss:Index":i+1};
+					if(w) k['ss:Width'] = width2px(p.width);
+					if(n.hidden) k['ss:Hidden']="1";
+					if(!T) { T = true; stream.push("<Table>"); }
+					stream.push(writextag("Column",null,k));
+				});
+				dense = ws["!data"] != null;
+				if(dense) darr = ws["!data"];
+				addr.r = addr.c = 0;
+			}
+
+			/* process `stride` rows per invocation */
+			for(var cnt = 0; R <= range.e.r && cnt < stride; ++R, ++cnt) {
+				var row = [write_ws_xlml_row(R, (ws['!rows']||[])[R])];
+				addr.r = R;
+				if(!(dense && !darr[R])) for(var C = range.s.c; C <= range.e.c; ++C) {
+					addr.c = C;
+					var skip = false;
+					for(mi = 0; mi != marr.length; ++mi) {
+						if(marr[mi].s.c > C) continue;
+						if(marr[mi].s.r > R) continue;
+						if(marr[mi].e.c < C) continue;
+						if(marr[mi].e.r < R) continue;
+						if(marr[mi].s.c != C || marr[mi].s.r != R) skip = true;
+						break;
+					}
+					if(skip) continue;
+					var ref = encode_col(C) + encode_row(R), cell = dense ? darr[R][C] : ws[ref];
+					row.push(write_ws_xlml_cell(cell, ref, ws, opts, wsidx, wb, addr));
+				}
+				row.push("</Row>");
+				if(!T) { T = true; stream.push("<Table>"); }
+				stream.push(row.join(""));
+			}
+		} break;
+
+		/* worksheet postamble */
+		case 5: {
+			stream.push(write_ws_xlml_wsopts(ws, opts, wsidx, wb));
+			if(ws && ws["!autofilter"]) stream.push('<AutoFilter x:Range="' + a1_to_rc(fix_range(ws["!autofilter"].ref), {r:0,c:0}) + '" xmlns="urn:schemas-microsoft-com:office:excel"></AutoFilter>');
+			stream.push("</Worksheet>");
+			wsidx++; R = -1;
+			return void (stage = 3);
+		}
+
+		/* footer */
+		case -1: {
+			stage = -2;
+			stream.push("</Workbook>");
+		} break;
+
+		/* exeunt */
+		case -2: stream.push(null); break;
+	}};
+	return stream;
+}
+
 var __stream = {
 	to_json: write_json_stream,
 	to_html: write_html_stream,
 	to_csv: write_csv_stream,
+	to_xlml: write_xlml_stream,
 	set_readable: set_readable
 };

modules/04_base64.ts

@@ -60,9 +60,9 @@ function Base64_decode(input: string): string {
 	var o = "";
 	var c1=0, c2=0, c3=0, e1=0, e2=0, e3=0, e4=0;
 	if(input.slice(0,5) == "data:") {
-    var i = input.slice(0, 1024).indexOf(";base64,");
-    if(i > -1) input = input.slice(i+8);
-  }
+		var i = input.slice(0, 1024).indexOf(";base64,");
+		if(i > -1) input = input.slice(i+8);
+	}
 	input = input.replace(/[^\w\+\/\=]/g, "");
 	for(var i = 0; i < input.length;) {
 		e1 = Base64_map.indexOf(input.charAt(i++));

modules/45_rtf.js

@@ -49,6 +49,10 @@ function rtf_to_sheet_str(str, opts) {
               if (o.cellText !== false)
                 cell.w = cell.v;
               cell.v = fuzzynum(cell.v);
+            } else if (RBErr[cell.v] != null) {
+              cell.t = "e";
+              cell.w = cell.v;
+              cell.v = RBErr[cell.v];
             }
             if (dense)
               row[C] = cell;

modules/45_rtf.ts

@@ -12,6 +12,7 @@ declare function a2s(a: any): string;
 declare var has_buf: boolean;
 declare function Base64_decode(s: string): string;
 declare function fuzzynum(s: string): number;
+declare var RBErr: {[key: string]: number};
 
 function rtf_to_sheet(d: RawData, opts: ParsingOptions): WorkSheet {
 	switch(opts.type) {
@@ -54,7 +55,7 @@ function rtf_to_sheet_str(str: string, opts: ParsingOptions): WorkSheet {
 						var cell: CellObject = {v: payload.join(""), t:"s"};
 						if(cell.v == "TRUE" || cell.v == "FALSE") { cell.v = cell.v == "TRUE"; cell.t = "b"; }
 						else if(!isNaN(fuzzynum(cell.v as string))) { cell.t = 'n'; if(o.cellText !== false) cell.w = cell.v as string; cell.v = fuzzynum(cell.v as string); }
-
+						else if(RBErr[cell.v as string] != null) { cell.t = "e"; cell.w = cell.v as string; cell.v = RBErr[cell.v as string]; }
 						if(dense) row[C] = cell;
 						else (ws as SparseSheet)[encode_cell({r:R, c:C})] = cell;
 					}

modules/51_xlsbmeta.js

@@ -52,6 +52,10 @@ function parse_xlmeta_bin(data, name, _opts) {
   var metatype = 2;
   recordhopper(data, function(val, R, RT) {
     switch (RT) {
+      case 58:
+        break;
+      case 59:
+        break;
       case 335:
         out.Types.push({ name: val.name });
         break;

modules/51_xlsbmeta.ts

@@ -73,15 +73,37 @@ function parse_xlmeta_bin(data: RawData, name: string, _opts?: ParseXLMetaOption
 			// case 0x014D: /* BrtEndMetadata */
 			// case 0x014E: /* BrtBeginEsmdtinfo */
 			// case 0x0150: /* BrtEndEsmdtinfo */
+			// case 0x0151: /* BrtBeginEsmdb */
+			// case 0x0152: /* BrtEndEsmdb */
 			// case 0x0153: /* BrtBeginEsfmd */
 			// case 0x0154: /* BrtEndEsfmd */
+			// case 0x0174: /* BrtBeginEsmdx */
+			// case 0x0175: /* BrtEndEsmdx */
+			// case 0x0176: /* BrtBeginMdxSet */
+			// case 0x0177: /* BrtEndMdxSet */
+			// case 0x0178: /* BrtBeginMdxMbrProp */
+			// case 0x0179: /* BrtEndMdxMbrProp */
+			// case 0x017A: /* BrtBeginMdxKPI */
+			// case 0x017B: /* BrtEndMdxKPI */
+			// case 0x017C: /* BrtBeginEsstr */
+			// case 0x017D: /* BrtEndEsstr */
 			// case 0x0034: /* BrtBeginFmd */
 			// case 0x0035: /* BrtEndFmd */
+			// case 0x0036: /* BrtBeginMdx */
+			// case 0x0037: /* BrtEndMdx */
+			// case 0x0038: /* BrtBeginMdxTuple */
+			// case 0x0039: /* BrtEndMdxTuple */
 			// case 0x1000: /* BrtBeginDynamicArrayPr */
 			// case 0x1001: /* BrtEndDynamicArrayPr */
 			// case 0x138A: /* BrtBeginRichValueBlock */
 			// case 0x138B: /* BrtEndRichValueBlock */
 
+			case 0x003A: /* BrtMdxMbrIstr */
+				break;
+
+			case 0x003B: /* BrtStr */
+				break;
+
 			case 0x014F: /* BrtMdtinfo */
 				out.Types.push({name: (val as BrtMdtinfo).name}); break;
 

modules/59_vba.js

@@ -13,7 +13,7 @@ function fill_vba_xls(cfb, vba) {
   vba.FullPaths.forEach(function(p, i) {
     if (i == 0)
       return;
-    var newpath = p.replace(/[^\/]*[\/]/, "/_VBA_PROJECT_CUR/");
+    var newpath = p.replace(/^[\/]*[^\/]*[\/]/, "/_VBA_PROJECT_CUR/");
     if (newpath.slice(-1) !== "/")
       CFB.utils.cfb_add(cfb, newpath, vba.FileIndex[i].content);
   });

modules/59_vba.ts

@@ -16,7 +16,7 @@ function make_vba_xls(cfb: CFBModule.CFB$Container) {
 function fill_vba_xls(cfb: CFBModule.CFB$Container, vba: CFBModule.CFB$Container): void {
 	vba.FullPaths.forEach(function(p, i) {
 		if(i == 0) return;
-		var newpath = p.replace(/[^\/]*[\/]/, "/_VBA_PROJECT_CUR/");
+		var newpath = p.replace(/^[\/]*[^\/]*[\/]/, "/_VBA_PROJECT_CUR/");
 		if(newpath.slice(-1) !== "/") CFB.utils.cfb_add(cfb, newpath, vba.FileIndex[i].content);
 	});
 }

modules/83_numbers.js

@@ -1117,7 +1117,7 @@ function s5s_to_iwa_comment(s5s) {
   return out;
 }
 function parse_TST_TableModelArchive(M, root, ws, opts) {
-  var _a, _b, _c, _d, _e, _f, _g, _h, _i, _j;
+  var _a, _b, _c, _d, _e, _f, _g, _h, _i, _j, _k, _l, _m, _n;
   var pb = parse_shallow(root.data);
   var range = { s: { r: 0, c: 0 }, e: { r: 0, c: 0 } };
   range.e.r = (varint_to_i32(pb[6][0].data) >>> 0) - 1;
@@ -1196,6 +1196,38 @@ function parse_TST_TableModelArchive(M, root, ws, opts) {
       };
     });
   }
+  if (!((_k = ws["!merges"]) == null ? void 0 : _k.length) && ((_l = pb[47]) == null ? void 0 : _l[0])) {
+    var merge_owner = parse_shallow(pb[47][0].data);
+    if ((_m = merge_owner[2]) == null ? void 0 : _m[0]) {
+      var formula_store = parse_shallow(merge_owner[2][0].data);
+      if ((_n = formula_store[3]) == null ? void 0 : _n[0]) {
+        ws["!merges"] = mappa(formula_store[3], function(u) {
+          var _a2, _b2, _c2, _d2, _e2;
+          var formula_pair = parse_shallow(u);
+          var formula = parse_shallow(formula_pair[2][0].data);
+          var AST_node_array = parse_shallow(formula[1][0].data);
+          if (!((_a2 = AST_node_array[1]) == null ? void 0 : _a2[0]))
+            return;
+          var AST_node0 = parse_shallow(AST_node_array[1][0].data);
+          var AST_node_type = varint_to_i32(AST_node0[1][0].data);
+          if (AST_node_type != 67)
+            return;
+          var AST_colon_tract = parse_shallow(AST_node0[40][0].data);
+          if (!((_b2 = AST_colon_tract[3]) == null ? void 0 : _b2[0]) || !((_c2 = AST_colon_tract[4]) == null ? void 0 : _c2[0]))
+            return;
+          var colrange = parse_shallow(AST_colon_tract[3][0].data);
+          var rowrange = parse_shallow(AST_colon_tract[4][0].data);
+          var c = varint_to_i32(colrange[1][0].data);
+          var C = ((_d2 = colrange[2]) == null ? void 0 : _d2[0]) ? varint_to_i32(colrange[2][0].data) : c;
+          var r = varint_to_i32(rowrange[1][0].data);
+          var R = ((_e2 = rowrange[2]) == null ? void 0 : _e2[0]) ? varint_to_i32(rowrange[2][0].data) : r;
+          return { s: { r: r, c: c }, e: { r: R, c: C } };
+        }).filter(function(x) {
+          return x != null;
+        });
+      }
+    }
+  }
 }
 function parse_TST_TableInfoArchive(M, root, opts) {
   var pb = parse_shallow(root.data);
@@ -1512,7 +1544,7 @@ function numbers_add_meta(mlist, newid, newloc) {
   mlist[3].push({ type: 2, data: write_shallow([
     [],
     [{ type: 0, data: write_varint49(newid) }],
-    [{ type: 2, data: stru8(newloc.replace(/-.*$/, "")) }],
+    [{ type: 2, data: stru8(newloc.replace(/-[\s\S]*$/, "")) }],
     [{ type: 2, data: stru8(newloc) }],
     [{ type: 2, data: new Uint8Array([2, 0, 0]) }],
     [{ type: 2, data: new Uint8Array([2, 0, 0]) }],

modules/83_numbers.ts

@@ -4,7 +4,7 @@
 /* these are type imports and do not show up in the generated JS */
 import { CFB$Container, CFB$Entry } from 'cfb';
 import { WorkBook, WorkSheet, Range, CellObject, ParsingOptions, WritingOptions, DenseWorkSheet, Comments } from '../';
-import type { utils, NumberFormat } from "../";
+import type { utils, NumberFormat, DenseSheetData } from "../";
 
 declare var encode_col: typeof utils.encode_col;
 declare var encode_row: typeof utils.encode_row;
@@ -960,6 +960,7 @@ function parse_TST_TableModelArchive(M: MessageSpace, root: IWAMessage, ws: Work
 		_R += _tile.nrows;
 	});
 
+	/* old-style merges */
 	if(store[13]?.[0]) {
 		var ref = M[parse_TSP_Reference(store[13][0].data)][0];
 		var mtype = varint_to_i32(ref.meta[1][0].data);
@@ -976,6 +977,50 @@ function parse_TST_TableModelArchive(M: MessageSpace, root: IWAMessage, ws: Work
 			};
 		});
 	}
+
+	/* new-style merges */
+	if(!ws["!merges"]?.length && pb[47]?.[0]) {
+		// .TST.MergeOwnerArchive
+		var merge_owner = parse_shallow(pb[47][0].data);
+		if(merge_owner[2]?.[0]) {
+			// .TST.FormulaStoreArchive
+			var formula_store = parse_shallow(merge_owner[2][0].data);
+			if(formula_store[3]?.[0]) {
+				ws["!merges"] = mappa<Range|undefined>(formula_store[3], (u) => {
+					var formula_pair = parse_shallow(u);
+
+					/* TODO: this should eventually use a proper formula parser */
+					// .TSCE.FormulaArchive
+					var formula = parse_shallow(formula_pair[2][0].data);
+
+					// .TSCE.ASTNodeArrayArchive
+					var AST_node_array = parse_shallow(formula[1][0].data);
+
+					// .TSCE.ASTNodeArrayArchive.ASTNodeArchive
+					if(!AST_node_array[1]?.[0]) return;
+					var AST_node0 = parse_shallow(AST_node_array[1][0].data);
+
+					// .TSCE.ASTNodeArrayArchive.ASTNodeType
+					var AST_node_type = varint_to_i32(AST_node0[1][0].data);
+					if(AST_node_type != 67) return; // COLON_TRACT_NODE
+
+					// .TSCE.ASTNodeArrayArchive.ASTColonTractArchive
+					var AST_colon_tract = parse_shallow(AST_node0[40][0].data);
+					if(!AST_colon_tract[3]?.[0] || !AST_colon_tract[4]?.[0]) return;
+
+					// ASTColonTractAbsoluteRangeArchive
+					var colrange = parse_shallow(AST_colon_tract[3][0].data);
+					var rowrange = parse_shallow(AST_colon_tract[4][0].data);
+					var c = varint_to_i32(colrange[1][0].data);
+					var C = colrange[2]?.[0] ? varint_to_i32(colrange[2][0].data) : c;
+					var r = varint_to_i32(rowrange[1][0].data);
+					var R = rowrange[2]?.[0] ? varint_to_i32(rowrange[2][0].data) : r;
+					return { s: { r, c }, e: { r: R, c: C }} as Range;
+				}).filter(x => x != null) as Range[];
+				// .TST.FormulaStoreArchive.FormulaStorePair
+			}
+		}
+	}
 }
 
 /** Parse .TST.TableInfoArchive (6000) */
@@ -1281,7 +1326,7 @@ function numbers_iwa_find(cfb: CFB$Container, deps: Dependents, id: number) {
 function numbers_add_meta(mlist: ProtoMessage, newid: number, newloc: string) {
 	mlist[3].push({type: 2, data: write_shallow([ [],
 		[{type: 0, data: write_varint49(newid)}],
-		[{type: 2, data: stru8(newloc.replace(/-.*$/, "")) }],
+		[{type: 2, data: stru8(newloc.replace(/-[\s\S]*$/, "")) }],
 		[{type: 2, data: stru8(newloc)}],
 		[{type: 2, data: new Uint8Array([2, 0, 0])}],
 		[{type: 2, data: new Uint8Array([2, 0, 0])}],
@@ -1652,7 +1697,7 @@ function write_numbers_tma(cfb: CFB$Container, deps: Dependents, ws: WorkSheet,
 	if(trunc) console.error(`Truncating to ${encode_range(range)}`);
 
 	/* preprocess data and build up shared string table */
-	var data: CellObject[][] = [];
+	var data: DenseSheetData = [];
 	if(ws["!data"]) data = ws["!data"];
 	else {
 		var colstr: string[] = [];
@@ -1663,7 +1708,7 @@ function write_numbers_tma(cfb: CFB$Container, deps: Dependents, ws: WorkSheet,
 			for(_C = 0; _C <= range.e.c; ++_C) {
 				var _cell = ws[colstr[_C] + _R];
 				if(!_cell) continue;
-				data[R_][_C] = _cell;
+				data[R_]![_C] = _cell;
 			}
 		}
 	}

package.json

@@ -1,6 +1,6 @@
 {
 	"name": "xlsx",
-	"version": "0.20.1",
+	"version": "0.20.3",
 	"author": "sheetjs",
 	"description": "SheetJS Spreadsheet data parser and writer",
 	"keywords": [
@@ -142,10 +142,7 @@
 		"url": "https://git.sheetjs.com/SheetJS/sheetjs"
 	},
 	"scripts": {
-		"pretest": "npm run lint",
-		"test": "npm run tests-only",
-		"pretest-only": "git submodule init && git submodule update",
-		"tests-only": "make travis",
+		"test": "make travis",
 		"build": "make",
 		"lint": "make fullint",
 		"dtslint": "dtslint types"

packages/dta/Makefile

@@ -17,7 +17,7 @@ types: dta.ts
 node: dist/dta.js
 
 dist/dta.js: dta.ts
-	npx esbuild@0.14.14 dta.ts --bundle --outdir=dist --platform=node
+	npx esbuild@0.14.14 $< --bundle --outfile=$@ --platform=node
 
 .PHONY: test-node
 test-node: dist/dta.js test.js
@@ -28,5 +28,8 @@ test-node: dist/dta.js test.js
 browser: dist/dta.min.js
 
 dist/dta.min.js: dta.ts
-	npx esbuild@0.14.14 dta.ts --bundle --outfile=dist/dta.min.js --minify --sourcemap --global-name=DTA
+	npx esbuild@0.14.14 $< --bundle --outfile=$@ --minify --sourcemap --global-name=DTA
+
+dist/dta.mjs: dta.ts
+	npx esbuild@0.14.14 $< --bundle --outfile=$@ --minify --sourcemap --format=esm
 

packages/dta/README.md

@@ -13,13 +13,13 @@ The codec will truncate data to 1048576 observations and 16384 variables.
 Using NodeJS package manager:
 
 ```bash
-npm install --save https://cdn.sheetjs.com/dta-0.0.1/dta-0.0.1.tgz
+npm install --save https://cdn.sheetjs.com/dta-0.0.2/dta-0.0.2.tgz
 ```
 
 The standalone script is also hosted on the SheetJS CDN:
 
 ```html
-<script src="https://cdn.sheetjs.com/dta-0.0.1/package/dist/dta.min.js"></script>
+<script src="https://cdn.sheetjs.com/dta-0.0.2/package/dist/dta.min.js"></script>
 ```
 
 ## Usage
@@ -60,4 +60,10 @@ DTA.set_utils(XLSX.utils);
   out.innerHTML = html;
 })();
 </script>
-```
+```
+
+`dist/dta.mjs` is a ECMAScript Module build designed to be used with bundlers:
+
+```js
+import * as DTA from 'dta';
+```

packages/dta/dist/dta.js

@@ -28,7 +28,7 @@ __export(dta_exports, {
   set_utils: () => set_utils,
   version: () => version
 });
-var version = "0.0.1";
+var version = "0.0.2";
 var _utils;
 function set_utils(utils) {
   _utils = utils;
@@ -524,6 +524,7 @@ function parse_tagged(raw) {
     throw err;
   const wb = _utils.book_new();
   _utils.book_append_sheet(wb, ws, "Sheet1");
+  wb.bookType = "dta";
   return wb;
 }
 function parse_legacy(raw) {
@@ -668,6 +669,7 @@ function parse_legacy(raw) {
     }
   const wb = _utils.book_new();
   _utils.book_append_sheet(wb, ws, "Sheet1");
+  wb.bookType = "dta";
   return wb;
 }
 function parse(data) {

packages/dta/dta.ts

@@ -1,7 +1,7 @@
 import { CellObject, DenseWorkSheet, WorkBook, type utils } from 'xlsx';
 export { parse, set_utils, version };
 
-const version = "0.0.1";
+const version = "0.0.2";
 
 let _utils: typeof utils;
 /** Set internal instance of `utils`
@@ -92,7 +92,6 @@ function read_f32(p: Payload, LE: boolean): number | null {
   p.ptr += 4;
   const d = p.dv.getFloat32(p.ptr - 4, LE);
   return d > 1.701e+38 ? null : d;
-
 }
 function read_u32(p: Payload, LE: boolean) {
   p.ptr += 4;
@@ -150,7 +149,7 @@ function parse_tagged(raw: Uint8Array): WorkBook {
     ptr: 0,
     raw,
     dv: u8_to_dataview(raw)
-  }
+  };
 
   let vers: number = 118;
   let LE: boolean = true;
@@ -469,6 +468,7 @@ function parse_tagged(raw: Uint8Array): WorkBook {
   if(!valid_inc(d, "</stata_dta>")) throw err;
   const wb = _utils.book_new();
   _utils.book_append_sheet(wb, ws, "Sheet1");
+  wb.bookType = "dta" as any;
   return wb;
 }
 
@@ -480,7 +480,7 @@ function parse_legacy(raw: Uint8Array): WorkBook {
     ptr: 1,
     raw,
     dv: u8_to_dataview(raw)
-  }
+  };
 
   let LE: boolean = true;
   let nvar: number = 0, nobs: number = 0;
@@ -612,6 +612,7 @@ function parse_legacy(raw: Uint8Array): WorkBook {
 
   const wb: WorkBook = _utils.book_new();
   _utils.book_append_sheet(wb, ws, "Sheet1");
+  wb.bookType = "dta" as any;
   return wb;
 }
 

packages/dta/package.json

@@ -1,12 +1,13 @@
 {
 	"name": "dta",
-	"version": "0.0.1",
+	"version": "0.0.2",
 	"author": "sheetjs",
 	"description": "Stata .dta codecs for SheetJS Common Spreadsheet Format",
 	"bin": {
 		"dta2csv": "./bin/dta2csv.njs"
 	},
 	"main": "dist/dta.js",
+	"module": "dist/dta.mjs",
 	"types": "types",
 	"files": [
 		"bin/",
@@ -33,6 +34,6 @@
 		"node": ">=12.0"
 	},
 	"devDependencies": {
-		"xlsx": "https://cdn.sheetjs.com/xlsx-0.20.0/xlsx-0.20.0.tgz"
+		"xlsx": "https://cdn.sheetjs.com/xlsx-0.20.1/xlsx-0.20.1.tgz"
 	}
 }

packages/dta/types/index.d.ts

@@ -1,6 +1,6 @@
 import { WorkBook } from 'xlsx';
 export { parse, set_utils, version };
-declare const version = "0.0.1";
+declare const version = "0.0.2";
 /** Set internal instance of `utils`
  *
  * Usage:

packages/ssf/bits/02_utilities.js

@@ -5,6 +5,6 @@ function pad_(v/*:any*/,d/*:number*/)/*:string*/{var t=""+v;return t.length>=d?t
 function rpad_(v/*:any*/,d/*:number*/)/*:string*/{var t=""+v; return t.length>=d?t:t+fill(' ',d-t.length);}
 function pad0r1(v/*:any*/,d/*:number*/)/*:string*/{var t=""+Math.round(v); return t.length>=d?t:fill('0',d-t.length)+t;}
 function pad0r2(v/*:any*/,d/*:number*/)/*:string*/{var t=""+v; return t.length>=d?t:fill('0',d-t.length)+t;}
-var p2_32 = Math.pow(2,32);
+var p2_32 = /*#__PURE__*/Math.pow(2,32);
 function pad0r(v/*:any*/,d/*:number*/)/*:string*/{if(v>p2_32||v<-p2_32) return pad0r1(v,d); var i = Math.round(v); return pad0r2(i,d); }
 function isgeneral(s/*:string*/, i/*:?number*/)/*:boolean*/ { i = i || 0; return s.length >= 7 + i && (s.charCodeAt(i)|32) === 103 && (s.charCodeAt(i+1)|32) === 101 && (s.charCodeAt(i+2)|32) === 110 && (s.charCodeAt(i+3)|32) === 101 && (s.charCodeAt(i+4)|32) === 114 && (s.charCodeAt(i+5)|32) === 97 && (s.charCodeAt(i+6)|32) === 108; }

packages/ssf/bits/25_table.js

@@ -1,4 +1,5 @@
 function init_table(t/*:any*/) {
+	if(!t) t = {};
 	t[0]=  'General';
 	t[1]=  '0';
 	t[2]=  '0.00';
@@ -28,6 +29,7 @@ function init_table(t/*:any*/) {
 	t[48]= '##0.0E+0';
 	t[49]= '@';
 	t[56]= '"上午/下午 "hh"時"mm"分"ss"秒 "';
+	return t;
 }
 
 var table_fmt = {};

packages/ssf/bits/40_general.js

@@ -29,6 +29,7 @@ var general_fmt_num = (function make_general_fmt_num() {
 	}
 
 	function general_fmt_num_base(v/*:number*/)/*:string*/ {
+		if(!isFinite(v)) return isNaN(v) ? "#NUM!" : "#DIV/0!";
 		var V = Math.floor(Math.log(Math.abs(v))*Math.LOG10E), o;
 
 		if(V >= -4 && V <= -1) o = v.toPrecision(10+V);

packages/ssf/bits/60_number.js

@@ -39,7 +39,7 @@ function write_num_f2(r/*:Array<string>*/, aval/*:number*/, sign/*:string*/)/*:s
 	return sign + (aval === 0 ? "" : ""+aval) + fill(" ", r[1].length + 2 + r[4].length);
 }
 var dec1 = /^#*0*\.([0#]+)/;
-var closeparen = /\).*[0#]/;
+var closeparen = /\)[^)]*[0#]/;
 var phone = /\(###\) ###\\?-####/;
 function hashq(str/*:string*/)/*:string*/ {
 	var o = "", cc;

packages/ssf/bits/90_main.js

@@ -4,6 +4,8 @@ function choose_fmt(f/*:string*/, v/*:any*/) {
 	if(l<4 && lat>-1) --l;
 	if(fmt.length > 4) throw new Error("cannot find right format for |" + fmt.join("|") + "|");
 	if(typeof v !== "number") return [4, fmt.length === 4 || lat>-1?fmt[fmt.length-1]:"@"];
+	/* NOTE: most spreadsheet software do not support NaN or infinities */
+	if(typeof v === "number" && !isFinite(v)) v = 0;
 	switch(fmt.length) {
 		case 1: fmt = lat>-1 ? ["General", "General", "General", fmt[0]] : [fmt[0], fmt[0], fmt[0], "@"]; break;
 		case 2: fmt = lat>-1 ? [fmt[0], fmt[0], fmt[0], fmt[1]] : [fmt[0], fmt[1], fmt[0], "@"]; break;
@@ -40,5 +42,7 @@ function format(fmt/*:string|number*/,v/*:any*/,o/*:?any*/) {
 	if(isgeneral(f[1])) return general_fmt(v, o);
 	if(v === true) v = "TRUE"; else if(v === false) v = "FALSE";
 	else if(v === "" || v == null) return "";
+	else if(isNaN(v) && f[1].indexOf("0") > -1) return "#NUM!";
+	else if(!isFinite(v) && f[1].indexOf("0") > -1) return "#DIV/0!";
 	return eval_fmt(f[1], v, o, f[0]);
 }

packages/ssf/index.html

@@ -13,8 +13,8 @@ a { text-decoration: none }
 <pre>
 <b><a href="http://sheetjs.com">SSF (Spreadsheet Number Format) Live Demo</a></b>
 
-<a href="https://github.com/SheetJS/ssf">Source Code Repo</a>
-<a href="https://github.com/SheetJS/ssf/issues">Issues?  Something look weird?  Click here and report an issue</a>
+<a href="https://git.sheetjs.com/sheetjs/sheetjs/src/branch/master/packages/ssf">Source Code Repo</a>
+<a href="https://git.sheetjs.com/SheetJS/sheetjs/issues">Issues?  Something look weird?  Click here and report an issue</a>
 </pre>
 <table>
 	<tr><td><b>Format code:</b></td><td><input type="text" id="fmt" value="General"></td></tr>

packages/ssf/package.json

@@ -20,7 +20,7 @@
 		"dtslint": "^0.1.2",
 		"mocha": "~2.5.3",
 		"typescript": "2.2.0",
-		"xlsx": "https://cdn.sheetjs.com/xlsx-0.20.0/xlsx-0.20.0.tgz"
+		"xlsx": "https://cdn.sheetjs.com/xlsx-0.20.2/xlsx-0.20.2.tgz"
 	},
 	"repository": {
 		"type": "git",

packages/ssf/ssf.flow.js

@@ -12,7 +12,7 @@ function pad_(v/*:any*/,d/*:number*/)/*:string*/{var t=""+v;return t.length>=d?t
 function rpad_(v/*:any*/,d/*:number*/)/*:string*/{var t=""+v; return t.length>=d?t:t+fill(' ',d-t.length);}
 function pad0r1(v/*:any*/,d/*:number*/)/*:string*/{var t=""+Math.round(v); return t.length>=d?t:fill('0',d-t.length)+t;}
 function pad0r2(v/*:any*/,d/*:number*/)/*:string*/{var t=""+v; return t.length>=d?t:fill('0',d-t.length)+t;}
-var p2_32 = Math.pow(2,32);
+var p2_32 = /*#__PURE__*/Math.pow(2,32);
 function pad0r(v/*:any*/,d/*:number*/)/*:string*/{if(v>p2_32||v<-p2_32) return pad0r1(v,d); var i = Math.round(v); return pad0r2(i,d); }
 function isgeneral(s/*:string*/, i/*:?number*/)/*:boolean*/ { i = i || 0; return s.length >= 7 + i && (s.charCodeAt(i)|32) === 103 && (s.charCodeAt(i+1)|32) === 101 && (s.charCodeAt(i+2)|32) === 110 && (s.charCodeAt(i+3)|32) === 101 && (s.charCodeAt(i+4)|32) === 114 && (s.charCodeAt(i+5)|32) === 97 && (s.charCodeAt(i+6)|32) === 108; }
 /*::
@@ -42,6 +42,7 @@ var months/*:Array<Array<string> >*/ = [
 	['D', 'Dec', 'December']
 ];
 function init_table(t/*:any*/) {
+	if(!t) t = {};
 	t[0]=  'General';
 	t[1]=  '0';
 	t[2]=  '0.00';
@@ -71,6 +72,7 @@ function init_table(t/*:any*/) {
 	t[48]= '##0.0E+0';
 	t[49]= '@';
 	t[56]= '"上午/下午 "hh"時"mm"分"ss"秒 "';
+	return t;
 }
 
 var table_fmt = {};
@@ -252,6 +254,7 @@ var general_fmt_num = (function make_general_fmt_num() {
 	}
 
 	function general_fmt_num_base(v/*:number*/)/*:string*/ {
+		if(!isFinite(v)) return isNaN(v) ? "#NUM!" : "#DIV/0!";
 		var V = Math.floor(Math.log(Math.abs(v))*Math.LOG10E), o;
 
 		if(V >= -4 && V <= -1) o = v.toPrecision(10+V);
@@ -417,7 +420,7 @@ function write_num_f2(r/*:Array<string>*/, aval/*:number*/, sign/*:string*/)/*:s
 	return sign + (aval === 0 ? "" : ""+aval) + fill(" ", r[1].length + 2 + r[4].length);
 }
 var dec1 = /^#*0*\.([0#]+)/;
-var closeparen = /\).*[0#]/;
+var closeparen = /\)[^)]*[0#]/;
 var phone = /\(###\) ###\\?-####/;
 function hashq(str/*:string*/)/*:string*/ {
 	var o = "", cc;
@@ -951,6 +954,8 @@ function choose_fmt(f/*:string*/, v/*:any*/) {
 	if(l<4 && lat>-1) --l;
 	if(fmt.length > 4) throw new Error("cannot find right format for |" + fmt.join("|") + "|");
 	if(typeof v !== "number") return [4, fmt.length === 4 || lat>-1?fmt[fmt.length-1]:"@"];
+	/* NOTE: most spreadsheet software do not support NaN or infinities */
+	if(typeof v === "number" && !isFinite(v)) v = 0;
 	switch(fmt.length) {
 		case 1: fmt = lat>-1 ? ["General", "General", "General", fmt[0]] : [fmt[0], fmt[0], fmt[0], "@"]; break;
 		case 2: fmt = lat>-1 ? [fmt[0], fmt[0], fmt[0], fmt[1]] : [fmt[0], fmt[1], fmt[0], "@"]; break;
@@ -987,6 +992,8 @@ function format(fmt/*:string|number*/,v/*:any*/,o/*:?any*/) {
 	if(isgeneral(f[1])) return general_fmt(v, o);
 	if(v === true) v = "TRUE"; else if(v === false) v = "FALSE";
 	else if(v === "" || v == null) return "";
+	else if(isNaN(v) && f[1].indexOf("0") > -1) return "#NUM!";
+	else if(!isFinite(v) && f[1].indexOf("0") > -1) return "#DIV/0!";
 	return eval_fmt(f[1], v, o, f[0]);
 }
 function load_entry(fmt/*:string*/, idx/*:?number*/)/*:number*/ {

packages/ssf/ssf.js

@@ -38,6 +38,7 @@ var months = [
 	['D', 'Dec', 'December']
 ];
 function init_table(t) {
+	if(!t) t = {};
 	t[0]=  'General';
 	t[1]=  '0';
 	t[2]=  '0.00';
@@ -67,6 +68,7 @@ function init_table(t) {
 	t[48]= '##0.0E+0';
 	t[49]= '@';
 	t[56]= '"上午/下午 "hh"時"mm"分"ss"秒 "';
+	return t;
 }
 
 var table_fmt = {};
@@ -248,6 +250,7 @@ var general_fmt_num = (function make_general_fmt_num() {
 	}
 
 	function general_fmt_num_base(v) {
+		if(!isFinite(v)) return isNaN(v) ? "#NUM!" : "#DIV/0!";
 		var V = Math.floor(Math.log(Math.abs(v))*Math.LOG10E), o;
 
 		if(V >= -4 && V <= -1) o = v.toPrecision(10+V);
@@ -412,7 +415,7 @@ function write_num_f2(r, aval, sign) {
 	return sign + (aval === 0 ? "" : ""+aval) + fill(" ", r[1].length + 2 + r[4].length);
 }
 var dec1 = /^#*0*\.([0#]+)/;
-var closeparen = /\).*[0#]/;
+var closeparen = /\)[^)]*[0#]/;
 var phone = /\(###\) ###\\?-####/;
 function hashq(str) {
 	var o = "", cc;
@@ -943,6 +946,8 @@ function choose_fmt(f, v) {
 	if(l<4 && lat>-1) --l;
 	if(fmt.length > 4) throw new Error("cannot find right format for |" + fmt.join("|") + "|");
 	if(typeof v !== "number") return [4, fmt.length === 4 || lat>-1?fmt[fmt.length-1]:"@"];
+	/* NOTE: most spreadsheet software do not support NaN or infinities */
+	if(typeof v === "number" && !isFinite(v)) v = 0;
 	switch(fmt.length) {
 		case 1: fmt = lat>-1 ? ["General", "General", "General", fmt[0]] : [fmt[0], fmt[0], fmt[0], "@"]; break;
 		case 2: fmt = lat>-1 ? [fmt[0], fmt[0], fmt[0], fmt[1]] : [fmt[0], fmt[1], fmt[0], "@"]; break;
@@ -979,6 +984,8 @@ function format(fmt,v,o) {
 	if(isgeneral(f[1])) return general_fmt(v, o);
 	if(v === true) v = "TRUE"; else if(v === false) v = "FALSE";
 	else if(v === "" || v == null) return "";
+	else if(isNaN(v) && f[1].indexOf("0") > -1) return "#NUM!";
+	else if(!isFinite(v) && f[1].indexOf("0") > -1) return "#DIV/0!";
 	return eval_fmt(f[1], v, o, f[0]);
 }
 function load_entry(fmt, idx) {

packages/ssf/ssf.md

@@ -1446,7 +1446,7 @@ SSF.load_table = function load_table(tbl/*:{[n:number]:string}*/) { for(var i=0;
 
 ## Fraction Library
 
-The implementation is from [our frac library](https://github.com/SheetJS/frac/):
+The implementation is from [our frac library](https://git.sheetjs.com/SheetJS/frac/):
 
 ```js>bits/30_frac.js
 function frac(x, D, mixed) {

packages/ssf/test/oddities.js

@@ -19,4 +19,14 @@ describe('oddities', function() {
     var chk = function(fmt){ return function(){ SSF.format(fmt,0); }; };
     bad.forEach(function(fmt){assert.throws(chk(fmt));});
   });
+  it('should handle NaN values and infinities', function() {
+    assert.equal(SSF.format('#,##0.0; (#,##0.0); "-"', NaN), " -");
+    assert.equal(SSF.format('#,##0.0; (#,##0.0); "-"', Infinity), " -");
+    assert.equal(SSF.format('#,##0.0; (#,##0.0); "-"', -Infinity), " -");
+    ["0.00", "General"].forEach(function(fmt) {
+      assert.equal(SSF.format(fmt, NaN), "#VALUE!");
+      assert.equal(SSF.format(fmt, Infinity), "#DIV/0!");
+      assert.equal(SSF.format(fmt, -Infinity), "#DIV/0!");
+    });
+  });
 });

test.js

@@ -54,7 +54,7 @@ if(!browser) {
 	for(var _fileAi = 0; _fileAi < _fileA.length; ++_fileAi) if(test_file(_fileA[_fileAi])) fileA.push(_fileA[_fileAi]);
 }
 
-var can_write_numbers = typeof Array.prototype.findIndex == "function" && typeof Uint8Array !== "undefined" && typeof Uint8Array.prototype.indexOf == "function";
+var can_write_numbers = typeof Set !== "undefined" && typeof Array.prototype.findIndex == "function" && typeof Uint8Array !== "undefined" && typeof Uint8Array.prototype.indexOf == "function";
 
 /* Excel enforces 31 character sheet limit, although technical file limit is 255 */
 function fixsheetname(x/*:string*/)/*:string*/ { return x.substr(0,31); }
@@ -800,6 +800,17 @@ describe('API', function() {
 		]);
 		if(assert.deepEqual) assert.deepEqual(data.A2, { l: { Target: 'https://123.com' }, v: 'url', t: 's' });
 	});
+	it('sheet_to_formulae', function() {
+		var ws = X.utils.aoa_to_sheet([
+			["a", "b", "c"],
+			[1, 2, 3],
+			[4, 5, 6]
+		], {dense: true});
+		ws["!data"][2][0].f = "2*B2";
+		ws["!data"][2][1].f = "B2+C2";
+		assert.equal(X.utils.sheet_to_formulae(ws).join("\n"), "A1='a\nB1='b\nC1='c\nA2=1\nB2=2\nC2=3\nA3=2*B2\nB3=B2+C2\nC3=6");
+		assert.equal(X.utils.sheet_to_formulae(ws, {values: false}).join("\n"), "A3=2*B2\nB3=B2+C2");
+	});
 	it('decode_range', function() {
 		var _c = "ABC", _r = "123", _C = "DEF", _R = "456";
 
@@ -1761,8 +1772,8 @@ describe('roundtrip features', function() {
 			['xlsx', paths.svxlsx],
 			['xlsb', paths.svxlsb],
 			['xls', paths.svxls],
-			['biff5', paths.svxls5]
-			// ['ods', paths.svods]
+			['biff5', paths.svxls5],
+			['ods', paths.svods]
 		].forEach(function(w) {
 			it(w[0], function() {
 				var wb1 = X.read(fs.readFileSync(w[1]), {type:TYPE});
@@ -1772,7 +1783,9 @@ describe('roundtrip features', function() {
 				assert.equal(wbs1.length, wbs2.length);
 				for(var i = 0; i < wbs1.length; ++i) {
 					assert.equal(wbs1[i].name, wbs2[i].name);
-					assert.equal(wbs1[i].Hidden, wbs2[i].Hidden);
+					/* NOTE: ODS does not support the equivalent of "Very Hidden" */
+					if(w[0] != "ods") assert.equal(wbs1[i].Hidden, wbs2[i].Hidden);
+					else assert.equal(!!wbs1[i].Hidden, !!wbs2[i].Hidden);
 				}
 			});
 		});
@@ -1889,6 +1902,32 @@ describe('roundtrip features', function() {
 		assert.ok(wb7.Workbook.WBProps.date1904);
 	}); });
 
+	it('should handle numeric NaN and Infinity', function() {[
+		"xlsx", "xlsm", "xlsb", "xls", "biff5", "biff4", "biff3", "biff2", "xlml", "csv", "txt", "sylk", "html", "rtf", "prn", "eth", "ods", "fods"
+	].forEach(function(ext) {
+		var ws = {
+			"!data": [
+				[ { t: "s", v: "Inf+" }, { t: "n", v: Infinity } ],
+				[ { t: "s", v: "Inf-" }, { t: "n", v: -Infinity } ],
+				[ { t: "s", v: "NaN" },  { t: "n", v: NaN } ],
+			],
+			"!ref": "A1:B3"
+		};
+		var wb = X.utils.book_new(ws, "Sheet1");
+		var buf = X.write(wb, { type: TYPE, bookType: ext, numbers: XLSX_ZAHL });
+		var wb2 = X.read(buf, { type: TYPE, PRN: true });
+		var csv = X.utils.sheet_to_csv(wb2.Sheets.Sheet1).split(/[\r\n]+/);
+		assert.equal(csv.length, 3);
+		assert.equal(csv[0], "Inf+,#DIV/0!");
+		assert.equal(csv[1], "Inf-,#DIV/0!");
+		assert.equal(csv[2], "NaN,#NUM!");
+		assert.equal(wb2.Sheets.Sheet1.B1.t, "e");
+		assert.equal(wb2.Sheets.Sheet1.B2.t, "e");
+		assert.equal(wb2.Sheets.Sheet1.B3.t, "e");
+		assert.equal(wb2.Sheets.Sheet1.B1.v, 0x07);
+		assert.equal(wb2.Sheets.Sheet1.B2.v, 0x07);
+		assert.equal(wb2.Sheets.Sheet1.B3.v, 0x24);
+	}); });
 });
 
 //function password_file(x){return x.match(/^password.*\.xls$/); }
@@ -2176,7 +2215,7 @@ function plaintext_test(wb, raw) {
 	var sheet = wb.Sheets[wb.SheetNames[0]];
 	plaintext_val.forEach(function(x) {
 		var cell = get_cell(sheet, x[0]);
-		var tcval = x[2+(raw ? 1 : 0)];
+		var tcval = x[2+(!!raw ? 1 : 0)];
 		var type = raw ? 's' : x[1];
 		if(x.length == 1) { if(cell) { assert.equal(cell.t, 'z'); assert.ok(!cell.v); } return; }
 		assert.equal(cell.v, tcval); assert.equal(cell.t, type);
@@ -2535,6 +2574,8 @@ function get_dom_element(html) {
 		domelt.innerHTML = html;
 		if(document.body) document.body.appendChild(domelt);
 		inserted_dom_elements.push(domelt);
+		var elts = domelt.getElementsByTagName("TABLE");
+		if(elts && elts[0]) return elts[0];
 		return domelt.children[0];
 	}
 	if(!JSDOM) throw new Error("Browser test fail");
@@ -2668,6 +2709,30 @@ describe('HTML', function() {
 			assert.equal(range.e.c, expectedCellCount - 1);
 		});
 	});
+	if(domtest) it('should handle numeric NaN and Infinity', function() {
+		var ws = {
+			"!data": [
+				[ { t: "s", v: "Inf+" }, { t: "n", v: Infinity } ],
+				[ { t: "s", v: "Inf-" }, { t: "n", v: -Infinity } ],
+				[ { t: "s", v: "NaN" },  { t: "n", v: NaN } ],
+			],
+			"!ref": "A1:B3"
+		};
+		var wb = X.utils.book_new(ws, "Sheet1");
+		var str = X.write(wb, { type: "string", bookType: "html" });
+		var wb2 = X.utils.table_to_book(get_dom_element(str));
+		var csv = X.utils.sheet_to_csv(wb2.Sheets.Sheet1).split(/[\r\n]+/);
+		assert.equal(csv.length, 3);
+		assert.equal(csv[0], "Inf+,#DIV/0!");
+		assert.equal(csv[1], "Inf-,#DIV/0!");
+		assert.equal(csv[2], "NaN,#NUM!");
+		assert.equal(wb2.Sheets.Sheet1.B1.t, "e");
+		assert.equal(wb2.Sheets.Sheet1.B2.t, "e");
+		assert.equal(wb2.Sheets.Sheet1.B3.t, "e");
+		assert.equal(wb2.Sheets.Sheet1.B1.v, 0x07);
+		assert.equal(wb2.Sheets.Sheet1.B2.v, 0x07);
+		assert.equal(wb2.Sheets.Sheet1.B3.v, 0x24);
+	});
 });
 
 describe('js -> file -> js', function() {

test.mjs

@@ -371,13 +371,13 @@ if(!browser) describe('should parse test files', function() {
 });
 
 function get_cell(ws/*:Worksheet*/, addr/*:string*/) {
-	if(!Array.isArray(ws)) return ws[addr];
+	if(!ws["!data"]) return ws[addr];
 	var a = X.utils.decode_cell(addr);
-	return (ws[a.r]||[])[a.c];
+	return (ws["!data"][a.r]||[])[a.c];
 }
 
 function each_cell(ws, f) {
-	if(Array.isArray(ws)) ws.forEach(function(row) { if(row) row.forEach(f); });
+	if(ws["!data"]) ws["!data"].forEach(function(row) { if(row) row.forEach(f); });
 	else Object.keys(ws).forEach(function(addr) { if(addr[0] === "!" || !ws.hasOwnProperty(addr)) return; f(ws[addr]); });
 }
 
@@ -804,6 +804,17 @@ describe('API', function() {
 		]);
 		if(assert.deepEqual) assert.deepEqual(data.A2, { l: { Target: 'https://123.com' }, v: 'url', t: 's' });
 	});
+	it('sheet_to_formulae', function() {
+		var ws = X.utils.aoa_to_sheet([
+			["a", "b", "c"],
+			[1, 2, 3],
+			[4, 5, 6]
+		], {dense: true});
+		ws["!data"][2][0].f = "2*B2";
+		ws["!data"][2][1].f = "B2+C2";
+		assert.equal(X.utils.sheet_to_formulae(ws).join("\n"), "A1='a\nB1='b\nC1='c\nA2=1\nB2=2\nC2=3\nA3=2*B2\nB3=B2+C2\nC3=6");
+		assert.equal(X.utils.sheet_to_formulae(ws, {values: false}).join("\n"), "A3=2*B2\nB3=B2+C2");
+	});
 	it('decode_range', function() {
 		var _c = "ABC", _r = "123", _C = "DEF", _R = "456";
 
@@ -1027,10 +1038,14 @@ describe('parse features', function() {
 	});
 
 	describe('column properties', function() {
-		var wbs = [], wbs_no_slk = [];
+		var wbs = [], wbs_no_slk = [], ols = [];
+		var ol = fs.existsSync(paths.olxls);
 		var bef = (function() {
 			wbs = CWPaths.map(function(n) { return X.read(fs.readFileSync(n), {type:TYPE, cellStyles:true}); });
 			wbs_no_slk = wbs.slice(0, 5);
+			/* */
+			if(!ol) return;
+			ols = OLPaths.map(function(p) { return X.read(fs.readFileSync(p), {type:TYPE, cellStyles:true}); });
 		});
 		if(typeof before != 'undefined') before(bef);
 		else it('before', bef);
@@ -1065,6 +1080,22 @@ describe('parse features', function() {
 				assert.equal(x[7].wpx, 101);
 			});
 		});
+		it('should have correct outline levels', function() {
+			ols.map(function(x) { return x.Sheets["Sheet1"]; }).forEach(function(ws) {
+				var cols = ws['!cols'];
+				if(!cols) return; // TODO: ODS!!!
+				for(var i = 0; i < 29; ++i) {
+					var cell = get_cell(ws, X.utils.encode_col(i) + "1");
+					var lvl = (cols[i]||{}).level||0;
+					if(!cell || cell.t == 's') assert.equal(lvl, 0);
+					else if(cell.t == 'n') {
+						if(cell.v === 0) assert.equal(lvl, 0);
+						else assert.equal(lvl, cell.v);
+					}
+				}
+				assert.equal(cols[29].level, 7);
+			});
+		});
 	});
 
 	describe('row properties', function() {
@@ -1873,6 +1904,32 @@ describe('roundtrip features', function() {
 		assert.ok(wb7.Workbook.WBProps.date1904);
 	}); });
 
+	it('should handle numeric NaN and Infinity', function() {[
+		"xlsx", "xlsm", "xlsb", "xls", "biff5", "biff4", "biff3", "biff2", "xlml", "csv", "txt", "sylk", "html", "rtf", "prn", "eth", "ods", "fods"
+	].forEach(function(ext) {
+		var ws = {
+			"!data": [
+				[ { t: "s", v: "Inf+" }, { t: "n", v: Infinity } ],
+				[ { t: "s", v: "Inf-" }, { t: "n", v: -Infinity } ],
+				[ { t: "s", v: "NaN" },  { t: "n", v: NaN } ],
+			],
+			"!ref": "A1:B3"
+		};
+		var wb = X.utils.book_new(ws, "Sheet1");
+		var buf = X.write(wb, { type: TYPE, bookType: ext, numbers: XLSX_ZAHL });
+		var wb2 = X.read(buf, { type: TYPE, PRN: true });
+		var csv = X.utils.sheet_to_csv(wb2.Sheets.Sheet1).split(/[\r\n]+/);
+		assert.equal(csv.length, 3);
+		assert.equal(csv[0], "Inf+,#DIV/0!");
+		assert.equal(csv[1], "Inf-,#DIV/0!");
+		assert.equal(csv[2], "NaN,#NUM!");
+		assert.equal(wb2.Sheets.Sheet1.B1.t, "e");
+		assert.equal(wb2.Sheets.Sheet1.B2.t, "e");
+		assert.equal(wb2.Sheets.Sheet1.B3.t, "e");
+		assert.equal(wb2.Sheets.Sheet1.B1.v, 0x07);
+		assert.equal(wb2.Sheets.Sheet1.B2.v, 0x07);
+		assert.equal(wb2.Sheets.Sheet1.B3.v, 0x24);
+	}); });
 });
 
 //function password_file(x){return x.match(/^password.*\.xls$/); }
@@ -2480,10 +2537,12 @@ describe('dbf', function() {
 	it(wbs[1][0], function() {
 		var wsfalse = wbsfalse[1][1].Sheets["Sheet1"];
 		[
-			["A1", "v", "CHAR10"], ["A2", "v", "test1"], ["B2", "v", 123.45], ["C2", "v", 12.345], ["D2", "v", 1234.1],
+			["A1", "v", "CHAR10"], ["A2", "v", "test1"], ["B2", "v", 123.45],
+			["C2", "v", 12.345], ["D2", "v", 1234.1],
 			["E2", "v", 6260], ["E2", "w", "19170219"],
 			["F2", "v", 6260], ["F2", "w", "19170219"],
-			["G2", "v", 1231.4], ["H2", "v", 123234], ["I2", "v", true], ["L2", "v", "SheetJS"]
+			["G2", "v", 1231.4], ["H2", "v", 123234],
+			["I2", "v", true], ["L2", "v", "SheetJS"]
 		].forEach(function(r) {
 			assert.equal(get_cell(wsfalse, r[0])[r[1]], r[2]);
 		});
@@ -2649,6 +2708,30 @@ describe('HTML', function() {
 			assert.equal(range.e.c, expectedCellCount - 1);
 		});
 	});
+	if(domtest) it('should handle numeric NaN and Infinity', function() {
+		var ws = {
+			"!data": [
+				[ { t: "s", v: "Inf+" }, { t: "n", v: Infinity } ],
+				[ { t: "s", v: "Inf-" }, { t: "n", v: -Infinity } ],
+				[ { t: "s", v: "NaN" },  { t: "n", v: NaN } ],
+			],
+			"!ref": "A1:B3"
+		};
+		var wb = X.utils.book_new(ws, "Sheet1");
+		var str = X.write(wb, { type: "string", bookType: "html" });
+		var wb2 = X.utils.table_to_book(get_dom_element(str));
+		var csv = X.utils.sheet_to_csv(wb2.Sheets.Sheet1).split(/[\r\n]+/);
+		assert.equal(csv.length, 3);
+		assert.equal(csv[0], "Inf+,#DIV/0!");
+		assert.equal(csv[1], "Inf-,#DIV/0!");
+		assert.equal(csv[2], "NaN,#NUM!");
+		assert.equal(wb2.Sheets.Sheet1.B1.t, "e");
+		assert.equal(wb2.Sheets.Sheet1.B2.t, "e");
+		assert.equal(wb2.Sheets.Sheet1.B3.t, "e");
+		assert.equal(wb2.Sheets.Sheet1.B1.v, 0x07);
+		assert.equal(wb2.Sheets.Sheet1.B2.v, 0x07);
+		assert.equal(wb2.Sheets.Sheet1.B3.v, 0x24);
+	});
 });
 
 describe('js -> file -> js', function() {
@@ -2706,6 +2789,97 @@ describe('rtf', function() {
 	});
 });
 
+describe('dense mode', function() {
+	it('sheet_new', function() {
+		var sp = X.utils.sheet_new(); assert.ok(!sp["!data"]);
+		sp = X.utils.sheet_new({}); assert.ok(!sp["!data"]);
+		sp = X.utils.sheet_new({dense: false}); assert.ok(!sp["!data"]);
+		sp = X.utils.sheet_new({dense: true}); assert.ok(!!sp["!data"]);
+	});
+
+	it('read', function() {
+		ILPaths.forEach(function(p) {
+			var wb = X.read(fs.readFileSync(p), {type: TYPE, WTF: true});
+			var ws = wb.Sheets[wb.SheetNames[0]];
+			assert.equal(ws["A1"].v, "Link to Sheet2");
+			assert.ok(!ws["!data"]);
+
+			wb = X.read(fs.readFileSync(p), {type: TYPE, WTF: true, dense: true});
+			ws = wb.Sheets[wb.SheetNames[0]];
+			assert.ok(!ws["A1"]);
+			assert.equal(ws["!data"][0][0].v, "Link to Sheet2");
+		});
+		if(!browser) artifax.forEach(function(p) {
+			var wb = X.read(fs.readFileSync(p), {type: TYPE, WTF: true});
+			var ws = wb.Sheets[wb.SheetNames[0]];
+			assert.ok(ws["A1"]);
+			assert.ok(!ws["!data"]);
+
+			wb = X.read(fs.readFileSync(p), {type: TYPE, WTF: true, dense: true});
+			ws = wb.Sheets[wb.SheetNames[0]];
+			assert.ok(!ws["A1"]);
+			assert.ok(ws["!data"][0][0]);
+		});
+	});
+	it('aoa_to_sheet', function() {
+		var aoa = [["SheetJS"],[5433795]];
+		var sp = X.utils.aoa_to_sheet(aoa); assert.equal(sp["A2"].v, 5433795); assert.ok(!sp["!data"]);
+		sp = X.utils.aoa_to_sheet(aoa, {}); assert.equal(sp["A2"].v, 5433795); assert.ok(!sp["!data"]);
+		sp = X.utils.aoa_to_sheet(aoa, {dense: false}); assert.equal(sp["A2"].v, 5433795); assert.ok(!sp["!data"]);
+		var ds = X.utils.aoa_to_sheet(aoa, {dense: true}); assert.equal(ds["!data"][1][0].v, 5433795); assert.ok(!ds["A2"]);
+	});
+	it('json_to_sheet', function() {
+		var json = [{"SheetJS": 5433795}];
+		var sp = X.utils.json_to_sheet(json); assert.equal(sp["A2"].v, 5433795); assert.ok(!sp["!data"]);
+		sp = X.utils.json_to_sheet(json, {}); assert.equal(sp["A2"].v, 5433795); assert.ok(!sp["!data"]);
+		sp = X.utils.json_to_sheet(json, {dense: false}); assert.equal(sp["A2"].v, 5433795); assert.ok(!sp["!data"]);
+		var ds = X.utils.json_to_sheet(json, {dense: true}); assert.equal(ds["!data"][1][0].v, 5433795); assert.ok(!ds["A2"]);
+	});
+	it('sheet_add_aoa', function() {
+		var aoa = [["SheetJS"]];
+		var sp = X.utils.aoa_to_sheet(aoa); X.utils.sheet_add_aoa(sp, [[5433795]], {origin:-1}); assert.equal(sp["A2"].v, 5433795); assert.ok(!sp["!data"]);
+		sp = X.utils.aoa_to_sheet(aoa); X.utils.sheet_add_aoa(sp, [[5433795]], {origin:-1, dense: true}); assert.equal(sp["A2"].v, 5433795); assert.ok(!sp["!data"]);
+		var ds = X.utils.aoa_to_sheet(aoa, {dense: true}); X.utils.sheet_add_aoa(ds, [[5433795]], {origin:-1}); assert.equal(ds["!data"][1][0].v, 5433795); assert.ok(!ds["A2"]);
+		ds = X.utils.aoa_to_sheet(aoa, {dense: true}); X.utils.sheet_add_aoa(ds, [[5433795]], {origin:-1, dense: true}); assert.equal(ds["!data"][1][0].v, 5433795); assert.ok(!ds["A2"]);
+	});
+	it('sheet_add_json', function() {
+		var aoa = [["SheetJS"]];
+		var sp = X.utils.aoa_to_sheet(aoa); X.utils.sheet_add_json(sp, [{X:5433795}], {origin:-1, skipHeader:1}); assert.equal(sp["A2"].v, 5433795); assert.ok(!sp["!data"]);
+		sp = X.utils.aoa_to_sheet(aoa); X.utils.sheet_add_json(sp, [{X:5433795}], {origin:-1, skipHeader: 1, dense: true}); assert.equal(sp["A2"].v, 5433795); assert.ok(!sp["!data"]);
+		var ds = X.utils.aoa_to_sheet(aoa, {dense: true}); X.utils.sheet_add_json(ds, [{X:5433795}], {origin:-1, skipHeader: 1}); assert.equal(ds["!data"][1][0].v, 5433795); assert.ok(!ds["A2"]);
+		ds = X.utils.aoa_to_sheet(aoa, {dense: true}); X.utils.sheet_add_json(ds, [{X:5433795}], {origin:-1, skipHeader: 1, dense: true}); assert.equal(ds["!data"][1][0].v, 5433795); assert.ok(!ds["A2"]);
+	});
+	ofmt.forEach(function(f) { it('write ' + f, function() {
+		var aoa = [["SheetJS"],[5433795]];
+		var wb = X.utils.book_new(X.utils.aoa_to_sheet(aoa));
+		var newwb = X.read(X.write(wb, {type:"binary", bookType:f}), {type:"binary"});
+		assert.equal(get_cell(newwb.Sheets["Sheet1"], "A1").v, "SheetJS");
+		assert.equal(get_cell(newwb.Sheets["Sheet1"], "A2").v, 5433795);
+	}); });
+	it('sheet_to_formulae', function() {
+		var w = ['xlsx', paths.fstxlsx];
+		var wb1 = X.read(fs.readFileSync(w[1]), {type:TYPE, cellFormula:true, WTF:true, dense: false});
+		var wb2 = X.read(fs.readFileSync(w[1]), {type:TYPE, cellFormula:true, WTF:true, dense: true});
+		wb1.SheetNames.forEach(function(n) {
+			assert.equal(
+				X.utils.sheet_to_formulae(wb1.Sheets[n]).sort().join("\n"),
+				X.utils.sheet_to_formulae(wb2.Sheets[n]).sort().join("\n")
+			);
+		});
+	});
+	it('sheet_to_csv', function() {
+		var w = ['xlsx', paths.fstxlsx];
+		var wb1 = X.read(fs.readFileSync(w[1]), {type:TYPE, cellFormula:true, WTF:true, dense: false});
+		var wb2 = X.read(fs.readFileSync(w[1]), {type:TYPE, cellFormula:true, WTF:true, dense: true});
+		wb1.SheetNames.forEach(function(n) {
+			assert.equal(
+				X.utils.sheet_to_csv(wb1.Sheets[n]),
+				X.utils.sheet_to_csv(wb2.Sheets[n])
+			);
+		});
+	});
+});
+
 describe('corner cases', function() {
 	it('output functions', function() {
 		var ws = X.utils.aoa_to_sheet([

test.mts

@@ -388,9 +388,9 @@ describe('should parse test files', function() {
 });
 
 function get_cell(ws: X.WorkSheet, addr: string) {
-	if(!Array.isArray(ws)) return ws[addr];
+	if(!Array.isArray(ws["!data"])) return ws[addr];
 	var a = X.utils.decode_cell(addr);
-	return (ws[a.r]||[])[a.c];
+	return (ws["!data"][a.r]||[])[a.c];
 }
 
 function each_cell(ws: X.WorkSheet, f: (c: X.CellObject) => any) {
@@ -1035,6 +1035,8 @@ describe('parse features', function() {
 		var wbs: X.WorkBook[] = [], wbs_no_slk: X.WorkBook[] = [];
 			wbs = CWPaths.map(function(n) { return X.read(fs.readFileSync(n), {type:TYPE, cellStyles:true}); });
 			wbs_no_slk = wbs.slice(0, 5);
+			/* */
+			var ols = OLPaths.map(function(p) { return X.read(fs.readFileSync(p), {type:TYPE, cellStyles:true}); });
 		it('should have "!cols"', function() {
 			wbs.forEach(function(wb) { assert.ok(wb.Sheets["Sheet1"]['!cols']); });
 		});
@@ -1066,6 +1068,22 @@ describe('parse features', function() {
 				assert.equal(x?.[7].wpx, 101);
 			});
 		});
+		it('should have correct outline levels', function() {
+			ols.map(function(x) { return x.Sheets["Sheet1"]; }).forEach(function(ws) {
+				var cols = ws['!cols'];
+				if(!cols) return; // TODO: ODS!!!
+				for(var i = 0; i < 29; ++i) {
+					var cell = get_cell(ws, X.utils.encode_col(i) + "1");
+					var lvl = (cols[i]||{}).level||0;
+					if(!cell || cell.t == 's') assert.equal(lvl, 0);
+					else if(cell.t == 'n') {
+						if(cell.v === 0) assert.equal(lvl, 0);
+						else assert.equal(lvl, cell.v);
+					}
+				}
+				assert.equal(cols[29].level, 7);
+			});
+		});
 	});
 
 	describe('row properties', function() {
@@ -1833,6 +1851,32 @@ describe('roundtrip features', function() {
 		assert.ok(wb7.Workbook?.WBProps?.date1904);
 	}); });
 
+	it('should handle numeric NaN and Infinity', function() {([
+		"xlsx", "xlsm", "xlsb", "xls", "biff5", "biff4", "biff3", "biff2", "xlml", "csv", "txt", "sylk", "html", "rtf", "prn", "eth", "ods", "fods"
+	] as Array<X.BookType>).forEach(function(ext) {
+		var ws: X.DenseWorkSheet = {
+			"!data": [
+				[ { t: "s", v: "Inf+" }, { t: "n", v: Infinity } ],
+				[ { t: "s", v: "Inf-" }, { t: "n", v: -Infinity } ],
+				[ { t: "s", v: "NaN" },  { t: "n", v: NaN } ],
+			],
+			"!ref": "A1:B3"
+		};
+		var wb = X.utils.book_new(ws, "Sheet1");
+		var buf = X.write(wb, { type: TYPE, bookType: ext, numbers: XLSX_ZAHL });
+		var wb2 = X.read(buf, { type: TYPE, PRN: true });
+		var csv = X.utils.sheet_to_csv(wb2.Sheets.Sheet1).split(/[\r\n]+/);
+		assert.equal(csv.length, 3);
+		assert.equal(csv[0], "Inf+,#DIV/0!");
+		assert.equal(csv[1], "Inf-,#DIV/0!");
+		assert.equal(csv[2], "NaN,#NUM!");
+		assert.equal(wb2.Sheets.Sheet1.B1.t, "e");
+		assert.equal(wb2.Sheets.Sheet1.B2.t, "e");
+		assert.equal(wb2.Sheets.Sheet1.B3.t, "e");
+		assert.equal(wb2.Sheets.Sheet1.B1.v, 0x07);
+		assert.equal(wb2.Sheets.Sheet1.B2.v, 0x07);
+		assert.equal(wb2.Sheets.Sheet1.B3.v, 0x24);
+	}); });
 });
 
 //function password_file(x){return x.match(/^password.*\.xls$/); }
@@ -2585,6 +2629,30 @@ describe('HTML', function() {
 			assert.equal(range.e.c, expectedCellCount - 1);
 		});
 	});
+	if(domtest) it('should handle numeric NaN and Infinity', function() {
+		var ws: X.DenseWorkSheet = {
+			"!data": [
+				[ { t: "s", v: "Inf+" }, { t: "n", v: Infinity } ],
+				[ { t: "s", v: "Inf-" }, { t: "n", v: -Infinity } ],
+				[ { t: "s", v: "NaN" },  { t: "n", v: NaN } ],
+			],
+			"!ref": "A1:B3"
+		};
+		var wb = X.utils.book_new(ws, "Sheet1");
+		var str = X.write(wb, { type: "string", bookType: "html" });
+		var wb2 = X.utils.table_to_book(get_dom_element(str));
+		var csv = X.utils.sheet_to_csv(wb2.Sheets.Sheet1).split(/[\r\n]+/);
+		assert.equal(csv.length, 3);
+		assert.equal(csv[0], "Inf+,#DIV/0!");
+		assert.equal(csv[1], "Inf-,#DIV/0!");
+		assert.equal(csv[2], "NaN,#NUM!");
+		assert.equal(wb2.Sheets.Sheet1.B1.t, "e");
+		assert.equal(wb2.Sheets.Sheet1.B2.t, "e");
+		assert.equal(wb2.Sheets.Sheet1.B3.t, "e");
+		assert.equal(wb2.Sheets.Sheet1.B1.v, 0x07);
+		assert.equal(wb2.Sheets.Sheet1.B2.v, 0x07);
+		assert.equal(wb2.Sheets.Sheet1.B3.v, 0x24);
+	});
 });
 
 describe('js -> file -> js', function() {
@@ -2638,6 +2706,99 @@ describe('rtf', function() {
 	});
 });
 
+describe('dense mode', function() {
+	it('sheet_new', function() {
+		var sp = X.utils.sheet_new(); assert.ok(!sp["!data"]);
+		sp = X.utils.sheet_new({}); assert.ok(!sp["!data"]);
+		sp = X.utils.sheet_new({dense: false}); assert.ok(!sp["!data"]);
+		sp = X.utils.sheet_new({dense: true}); assert.ok(!!sp["!data"]);
+	});
+
+	it('read', function() {
+		ILPaths.forEach(function(p) {
+			var wb = X.read(fs.readFileSync(p), {type: TYPE, WTF: true});
+			var ws: X.WorkSheet = wb.Sheets[wb.SheetNames[0]];
+			assert.equal(ws["A1"].v, "Link to Sheet2");
+			assert.ok(!ws["!data"]);
+
+			wb = X.read(fs.readFileSync(p), {type: TYPE, WTF: true, dense: true});
+			ws = wb.Sheets[wb.SheetNames[0]];
+			assert.ok(!ws["A1"]);
+			assert.equal(ws["!data"]?.[0][0].v, "Link to Sheet2");
+		});
+		if(!browser) artifax.forEach(function(p) {
+			var wb = X.read(fs.readFileSync(p), {type: TYPE, WTF: true});
+			var ws = wb.Sheets[wb.SheetNames[0]];
+			assert.ok(ws["A1"]);
+			assert.ok(!ws["!data"]);
+
+			wb = X.read(fs.readFileSync(p), {type: TYPE, WTF: true, dense: true});
+			ws = wb.Sheets[wb.SheetNames[0]];
+			assert.ok(!ws["A1"]);
+			assert.ok(!!ws["!data"]);
+			assert.ok(ws["!data"]?.[0][0]);
+		});
+	});
+	it('aoa_to_sheet', function() {
+		var aoa = [["SheetJS"],[5433795]];
+		var sp = X.utils.aoa_to_sheet(aoa); assert.equal(sp["A2"].v, 5433795); assert.ok(!sp["!data"]);
+		sp = X.utils.aoa_to_sheet(aoa, {}); assert.equal(sp["A2"].v, 5433795); assert.ok(!sp["!data"]);
+		sp = X.utils.aoa_to_sheet(aoa, {dense: false}); assert.equal(sp["A2"].v, 5433795); assert.ok(!sp["!data"]);
+		var ds = X.utils.aoa_to_sheet(aoa, {dense: true}); assert.equal(ds["!data"]?.[1][0].v, 5433795); assert.ok(!ds["A2"]);
+	});
+	it('json_to_sheet', function() {
+		var json = [{"SheetJS": 5433795}];
+		var sp = X.utils.json_to_sheet(json); assert.equal(sp["A2"].v, 5433795); assert.ok(!sp["!data"]);
+		sp = X.utils.json_to_sheet(json, {}); assert.equal(sp["A2"].v, 5433795); assert.ok(!sp["!data"]);
+		sp = X.utils.json_to_sheet(json, {dense: false}); assert.equal(sp["A2"].v, 5433795); assert.ok(!sp["!data"]);
+		var ds = X.utils.json_to_sheet(json, {dense: true}); assert.equal(ds["!data"]?.[1][0].v, 5433795); assert.ok(!ds["A2"]);
+	});
+	it('sheet_add_aoa', function() {
+		var aoa = [["SheetJS"]];
+		var sp = X.utils.aoa_to_sheet(aoa); X.utils.sheet_add_aoa(sp, [[5433795]], {origin:-1}); assert.equal(sp["A2"].v, 5433795); assert.ok(!sp["!data"]);
+		sp = X.utils.aoa_to_sheet(aoa); X.utils.sheet_add_aoa(sp, [[5433795]], {origin:-1, dense: true}); assert.equal(sp["A2"].v, 5433795); assert.ok(!sp["!data"]);
+		var ds:X.WorkSheet = X.utils.aoa_to_sheet(aoa, {dense: true}); X.utils.sheet_add_aoa(ds, [[5433795]], {origin:-1}); assert.equal(ds["!data"]?.[1][0].v, 5433795); assert.ok(!ds["A2"]);
+		ds = X.utils.aoa_to_sheet(aoa, {dense: true}); X.utils.sheet_add_aoa(ds, [[5433795]], {origin:-1, dense: true}); assert.equal(ds["!data"]?.[1][0].v, 5433795); assert.ok(!ds["A2"]);
+	});
+	it('sheet_add_json', function() {
+		var aoa = [["SheetJS"]];
+		var sp = X.utils.aoa_to_sheet(aoa); X.utils.sheet_add_json(sp, [{X:5433795}], {origin:-1, skipHeader:true}); assert.equal(sp["A2"].v, 5433795); assert.ok(!sp["!data"]);
+		sp = X.utils.aoa_to_sheet(aoa); X.utils.sheet_add_json(sp, [{X:5433795}], {origin:-1, skipHeader: true, dense: true}); assert.equal(sp["A2"].v, 5433795); assert.ok(!sp["!data"]);
+		var ds:X.WorkSheet = X.utils.aoa_to_sheet(aoa, {dense: true}); X.utils.sheet_add_json(ds, [{X:5433795}], {origin:-1, skipHeader: true}); assert.equal(ds["!data"]?.[1][0].v, 5433795); assert.ok(!ds["A2"]);
+		ds = X.utils.aoa_to_sheet(aoa, {dense: true}); X.utils.sheet_add_json(ds, [{X:5433795}], {origin:-1, skipHeader: true, dense: true}); assert.equal(ds["!data"]?.[1][0].v, 5433795); assert.ok(!ds["A2"]);
+	});
+	for(var ofmti = 0; ofmti < ofmt.length; ++ofmti) { var f = ofmt[ofmti];
+	it('write ' + f, function() {
+		var aoa = [["SheetJS"],[5433795]];
+		var wb = X.utils.book_new(X.utils.aoa_to_sheet(aoa));
+		var newwb = X.read(X.write(wb, {type:"binary", bookType:f}), {type:"binary"});
+		assert.equal(get_cell(newwb.Sheets["Sheet1"], "A1").v, "SheetJS");
+		assert.equal(get_cell(newwb.Sheets["Sheet1"], "A2").v, 5433795);
+	}); }
+	it('sheet_to_formulae', function() {
+		var w = ['xlsx', paths.fstxlsx];
+		var wb1 = X.read(fs.readFileSync(w[1]), {type:TYPE, cellFormula:true, WTF:true, dense: false});
+		var wb2 = X.read(fs.readFileSync(w[1]), {type:TYPE, cellFormula:true, WTF:true, dense: true});
+		wb1.SheetNames.forEach(function(n) {
+			assert.equal(
+				X.utils.sheet_to_formulae(wb1.Sheets[n]).sort().join("\n"),
+				X.utils.sheet_to_formulae(wb2.Sheets[n]).sort().join("\n")
+			);
+		});
+	});
+	it('sheet_to_csv', function() {
+		var w = ['xlsx', paths.fstxlsx];
+		var wb1 = X.read(fs.readFileSync(w[1]), {type:TYPE, cellFormula:true, WTF:true, dense: false});
+		var wb2 = X.read(fs.readFileSync(w[1]), {type:TYPE, cellFormula:true, WTF:true, dense: true});
+		wb1.SheetNames.forEach(function(n) {
+			assert.equal(
+				X.utils.sheet_to_csv(wb1.Sheets[n]),
+				X.utils.sheet_to_csv(wb2.Sheets[n])
+			);
+		});
+	});
+});
+
 describe('corner cases', function() {
 	it('output functions', function() {
 		var ws = X.utils.aoa_to_sheet([

test.sh

@@ -40,5 +40,3 @@ for TZ in ${TZONES[@]}; do
 	env TZ="$TZ" WTF=1 make test-deno_misc;
 	env TZ="$TZ" WTF=1 make test-denocp_misc;
 done
-
-

test.test.mjs

@@ -1,10 +1,3 @@
-var pdizzle = 0, fails = 0, passes = 0;
-var describe = function(m,cb){console.log(" ".repeat(pdizzle) + m); ++pdizzle; if(cb) cb(); --pdizzle; };
-describe.skip = function(m,cb){};
-var it = function(m,cb){console.log(" ".repeat(pdizzle) + m); ++pdizzle; if(cb) try { cb(); ++passes } catch(e) { ++fails, console.log("\x1b[31mFAILED: " + (e.message || e) + "\x1b[0m"); } --pdizzle;};
-it.skip = function(m,cb){};
-var before = function(cb){if(cb) cb();};
-var afterEach = function(cb){if(cb) cb();};
 /* xlsx.js (C) 2013-present SheetJS -- http://sheetjs.com */
 /* vim: set ts=2: */
 /*jshint mocha:true */
@@ -43,7 +36,7 @@ if(typeof Buffer !== 'undefined') {
 }
 
 var opts = ({cellNF: true}/*:any*/);
-var TYPE = browser ? "buffer" : "buffer";
+var TYPE = browser ? "binary" : "buffer";
 opts.type = TYPE;
 var fullex = [".xlsb", /*".xlsm",*/ ".xlsx"/*, ".xlml", ".xls"*/];
 var ofmt = ["xlsb", "xlsm", "xlsx", "ods", "biff2", "biff5", "biff8", "xlml", "sylk", "dif", "dbf", "eth", "fods", "csv", "txt", "html"];
@@ -378,13 +371,13 @@ if(!browser) describe('should parse test files', function() {
 });
 
 function get_cell(ws/*:Worksheet*/, addr/*:string*/) {
-	if(!Array.isArray(ws)) return ws[addr];
+	if(!ws["!data"]) return ws[addr];
 	var a = X.utils.decode_cell(addr);
-	return (ws[a.r]||[])[a.c];
+	return (ws["!data"][a.r]||[])[a.c];
 }
 
 function each_cell(ws, f) {
-	if(Array.isArray(ws)) ws.forEach(function(row) { if(row) row.forEach(f); });
+	if(ws["!data"]) ws["!data"].forEach(function(row) { if(row) row.forEach(f); });
 	else Object.keys(ws).forEach(function(addr) { if(addr[0] === "!" || !ws.hasOwnProperty(addr)) return; f(ws[addr]); });
 }
 
@@ -535,11 +528,11 @@ describe('parse options', function() {
 				"!ref": "A1:A1",
 				"A1": { t:"n", v:2, f:"_xlfn.IFS(2>3,1,3>2,2)"}
 			} } };
-			var str = X.write(wb, {bookType: "xlsx", type: "buffer"});
-			var wb2 = X.read(str, {type: "buffer"});
+			var str = X.write(wb, {bookType: "xlsx", type: "binary"});
+			var wb2 = X.read(str, {type: "binary"});
 			/*jshint -W069 */
 			assert.equal(wb2.Sheets["Sheet1"]["A1"].f, "IFS(2>3,1,3>2,2)");
-			var wb3 = X.read(str, {type: "buffer", xlfn: true});
+			var wb3 = X.read(str, {type: "binary", xlfn: true});
 			assert.equal(wb3.Sheets["Sheet1"]["A1"].f, "_xlfn.IFS(2>3,1,3>2,2)");
 			/*jshint +W069 */
 		});
@@ -584,7 +577,7 @@ describe('parse options', function() {
 			checkcells(X.read(fs.readFileSync(p), {type:TYPE, sheetRows:10}), false, false, false, true);
 		}); });
 		it('sheetRows n=1', function() { ofmt.forEach(function(fmt) {
-		[TYPE, "buffer", "buffer", "array"].forEach(function(ot) {
+		[TYPE, "base64", "binary", "array"].forEach(function(ot) {
 			var data = [[1,2],[3,4],[5,6]];
 			var ws = X.utils.aoa_to_sheet(data);
 			assert.ok(ws['!ref'] === "A1:B3");
@@ -688,10 +681,10 @@ describe('parse options', function() {
 });
 
 describe('input formats', function() {
-	if(false) it('should read binary strings', function() { artifax.forEach(function(p) {
+	it('should read binary strings', function() { artifax.forEach(function(p) {
 		X.read(fs.readFileSync(p, 'binary'), {type: 'binary'});
 	}); });
-	if(false) it('should read base64 strings', function() { artifax.forEach(function(p) {
+	it('should read base64 strings', function() { artifax.forEach(function(p) {
 		X.read(fs.readFileSync(p, 'base64'), {type: 'base64'});
 	}); });
 	it('handles base64 within data URI scheme (gh-2762)', function() {
@@ -710,7 +703,7 @@ describe('input formats', function() {
 			assert.equal(get_cell(ws, "A3").v, "Sam");
 		});
 	});
-	if(false) if(typeof Uint8Array !== 'undefined') it('should read array', function() { artifax.forEach(function(p) {
+	if(typeof Uint8Array !== 'undefined') it('should read array', function() { artifax.forEach(function(p) {
 		X.read(fs.readFileSync(p, 'binary').split("").map(function(x) { return x.charCodeAt(0); }), {type:'array'});
 	}); });
 	((browser || typeof Buffer === 'undefined') ? it.skip : it)('should read Buffers', function() { artifax.forEach(function(p) {
@@ -811,6 +804,17 @@ describe('API', function() {
 		]);
 		if(assert.deepEqual) assert.deepEqual(data.A2, { l: { Target: 'https://123.com' }, v: 'url', t: 's' });
 	});
+	it('sheet_to_formulae', function() {
+		var ws = X.utils.aoa_to_sheet([
+			["a", "b", "c"],
+			[1, 2, 3],
+			[4, 5, 6]
+		], {dense: true});
+		ws["!data"][2][0].f = "2*B2";
+		ws["!data"][2][1].f = "B2+C2";
+		assert.equal(X.utils.sheet_to_formulae(ws).join("\n"), "A1='a\nB1='b\nC1='c\nA2=1\nB2=2\nC2=3\nA3=2*B2\nB3=B2+C2\nC3=6");
+		assert.equal(X.utils.sheet_to_formulae(ws, {values: false}).join("\n"), "A3=2*B2\nB3=B2+C2");
+	});
 	it('decode_range', function() {
 		var _c = "ABC", _r = "123", _C = "DEF", _R = "456";
 
@@ -1034,10 +1038,14 @@ describe('parse features', function() {
 	});
 
 	describe('column properties', function() {
-		var wbs = [], wbs_no_slk = [];
+		var wbs = [], wbs_no_slk = [], ols = [];
+		var ol = fs.existsSync(paths.olxls);
 		var bef = (function() {
 			wbs = CWPaths.map(function(n) { return X.read(fs.readFileSync(n), {type:TYPE, cellStyles:true}); });
 			wbs_no_slk = wbs.slice(0, 5);
+			/* */
+			if(!ol) return;
+			ols = OLPaths.map(function(p) { return X.read(fs.readFileSync(p), {type:TYPE, cellStyles:true}); });
 		});
 		if(typeof before != 'undefined') before(bef);
 		else it('before', bef);
@@ -1072,6 +1080,22 @@ describe('parse features', function() {
 				assert.equal(x[7].wpx, 101);
 			});
 		});
+		it('should have correct outline levels', function() {
+			ols.map(function(x) { return x.Sheets["Sheet1"]; }).forEach(function(ws) {
+				var cols = ws['!cols'];
+				if(!cols) return; // TODO: ODS!!!
+				for(var i = 0; i < 29; ++i) {
+					var cell = get_cell(ws, X.utils.encode_col(i) + "1");
+					var lvl = (cols[i]||{}).level||0;
+					if(!cell || cell.t == 's') assert.equal(lvl, 0);
+					else if(cell.t == 'n') {
+						if(cell.v === 0) assert.equal(lvl, 0);
+						else assert.equal(lvl, cell.v);
+					}
+				}
+				assert.equal(cols[29].level, 7);
+			});
+		});
 	});
 
 	describe('row properties', function() {
@@ -1267,8 +1291,8 @@ describe('parse features', function() {
 		if(typeof before != 'undefined') before(bef);
 		else it('before', bef);
 		['xlsx', 'xlsb'].forEach(function(m) { it(m, function() {
-			var bstr = X.write(wb, {type: "buffer", bookType: m});
-			var nwb = X.read(bstr, {type: "buffer"});
+			var bstr = X.write(wb, {type: "binary", bookType: m});
+			var nwb = X.read(bstr, {type: "binary"});
 			assert.equal(nwb.Workbook.WBProps.CodeName, wb.Workbook.WBProps.CodeName);
 		}); });
 	});
@@ -1506,7 +1530,7 @@ describe('write features', function() {
 			var sheet = X.utils.aoa_to_sheet([["abc"]]);
 			get_cell(sheet, "A1").h = "<b>abc</b>";
 			var wb = {SheetNames:["Sheet1"], Sheets:{Sheet1:sheet}};
-			var str = X.write(wb, {bookType:"html", type:"buffer"});
+			var str = X.write(wb, {bookType:"html", type:"binary"});
 			assert.ok(str.indexOf("<b>abc</b>") > 0);
 		});
 	});
@@ -1613,7 +1637,7 @@ function parseDate(str/*:string*/, date1904/*:boolean*/)/*:Date*/ {
 
 var fixdate = browser ? parseDate("2014-02-19T14:30:00.000Z") : new Date("2014-02-19T14:30Z");
 
-if(false) describe('roundtrip features', function() {
+describe('roundtrip features', function() {
 	describe('should preserve core properties', function() { [
 		['xls', paths.cpxls],
 		['xlml', paths.cpxml],
@@ -1734,7 +1758,7 @@ if(false) describe('roundtrip features', function() {
 			['xlsb', paths.pmxlsb]
 		].forEach(function(w) { it(w[0], function() {
 			var wb1 = X.read(fs.readFileSync(w[1]), {type:TYPE});
-			var wb2 = X.read(X.write(wb1, {bookType:w[0], type:"buffer"}), {type:"buffer"});
+			var wb2 = X.read(X.write(wb1, {bookType:w[0], type:"binary"}), {type:"binary"});
 			[
 				/* Sheet Name     Margins: left   right  top bottom head foot */
 				["Normal",                 [0.70, 0.70, 0.75, 0.75, 0.30, 0.30]],
@@ -1880,6 +1904,32 @@ if(false) describe('roundtrip features', function() {
 		assert.ok(wb7.Workbook.WBProps.date1904);
 	}); });
 
+	it('should handle numeric NaN and Infinity', function() {[
+		"xlsx", "xlsm", "xlsb", "xls", "biff5", "biff4", "biff3", "biff2", "xlml", "csv", "txt", "sylk", "html", "rtf", "prn", "eth", "ods", "fods"
+	].forEach(function(ext) {
+		var ws = {
+			"!data": [
+				[ { t: "s", v: "Inf+" }, { t: "n", v: Infinity } ],
+				[ { t: "s", v: "Inf-" }, { t: "n", v: -Infinity } ],
+				[ { t: "s", v: "NaN" },  { t: "n", v: NaN } ],
+			],
+			"!ref": "A1:B3"
+		};
+		var wb = X.utils.book_new(ws, "Sheet1");
+		var buf = X.write(wb, { type: TYPE, bookType: ext, numbers: XLSX_ZAHL });
+		var wb2 = X.read(buf, { type: TYPE, PRN: true });
+		var csv = X.utils.sheet_to_csv(wb2.Sheets.Sheet1).split(/[\r\n]+/);
+		assert.equal(csv.length, 3);
+		assert.equal(csv[0], "Inf+,#DIV/0!");
+		assert.equal(csv[1], "Inf-,#DIV/0!");
+		assert.equal(csv[2], "NaN,#NUM!");
+		assert.equal(wb2.Sheets.Sheet1.B1.t, "e");
+		assert.equal(wb2.Sheets.Sheet1.B2.t, "e");
+		assert.equal(wb2.Sheets.Sheet1.B3.t, "e");
+		assert.equal(wb2.Sheets.Sheet1.B1.v, 0x07);
+		assert.equal(wb2.Sheets.Sheet1.B2.v, 0x07);
+		assert.equal(wb2.Sheets.Sheet1.B3.v, 0x24);
+	}); });
 });
 
 //function password_file(x){return x.match(/^password.*\.xls$/); }
@@ -1888,7 +1938,7 @@ var password_files = [
 	"password_2002_40_xor.xls"
 ];
 describe('invalid files', function() {
-	if(false) describe('parse', function() { [
+	describe('parse', function() { [
 		['KEY files', 'numbers/Untitled.key'],
 		['PAGES files', 'numbers/Untitled.pages'],
 		['password', 'apachepoi_password.xls'],
@@ -2187,21 +2237,18 @@ var html_bstr = make_html_str(1), html_str = make_html_str(0);
 var csv_bstr = make_csv_str(1), csv_str = make_csv_str(0);
 
 
-// WTF=1 make test-bun_misc in bun 1.0.15 reached this point
-console.log(`${fails} FAILED ${passes} PASSED`); process.exit(+!!(fails > 0));
-
 describe('CSV', function() {
 	describe('input', function(){
 		var b = "1,2,3,\nTRUE,FALSE,,sheetjs\nfoo,bar,2/19/14,0.3\n,,,\nbaz,,qux,\n";
 		it('should generate date numbers by default', function() {
-			var opts = {type:"buffer"};
+			var opts = {type:"binary"};
 			var cell = get_cell(X.read(b, opts).Sheets["Sheet1"], "C3");
 			assert.equal(cell.w, '2/19/14');
 			assert.equal(cell.t, 'n');
 			assert.ok(typeof cell.v == "number");
 		});
 		it('should generate dates when requested', function() {
-			var opts = {type:"buffer", cellDates:true};
+			var opts = {type:"binary", cellDates:true};
 			var cell = get_cell(X.read(b, opts).Sheets["Sheet1"], "C3");
 			assert.equal(cell.w, '2/19/14');
 			assert.equal(cell.t, 'd');
@@ -2209,7 +2256,7 @@ describe('CSV', function() {
 		});
 
 		it('should use US date code 14 by default', function() {
-			var opts = ({type:"buffer"}/*:any*/);
+			var opts = ({type:"binary"}/*:any*/);
 			var cell = get_cell(X.read(b, opts).Sheets["Sheet1"], "C3");
 			assert.equal(cell.w, '2/19/14');
 			opts.cellDates = true;
@@ -2217,7 +2264,7 @@ describe('CSV', function() {
 			assert.equal(cell.w, '2/19/14');
 		});
 		it('should honor dateNF override', function() {
-			var opts = ({type:"buffer", dateNF:"YYYY-MM-DD", cellNF: true}/*:any*/);
+			var opts = ({type:"binary", dateNF:"YYYY-MM-DD", cellNF: true}/*:any*/);
 			var cell = get_cell(X.read(b, opts).Sheets["Sheet1"], "C3");
 			/* NOTE: IE interprets 2-digit years as 19xx */
 			assert.ok(cell.w == '2014-02-19' || cell.w == '1914-02-19' || cell.w == "2/19/14");
@@ -2225,7 +2272,7 @@ describe('CSV', function() {
 			opts.cellDates = true; opts.dateNF = "YY-MM-DD";
 			cell = get_cell(X.read(b, opts).Sheets["Sheet1"], "C3");
 			assert.ok(cell.w == '14-02-19' || cell.w == "2/19/14");
-			var opts = ({type:"buffer", dateNF:"YYYY-MM-DD", UTC: true}/*:any*/);
+			var opts = ({type:"binary", dateNF:"YYYY-MM-DD", UTC: true}/*:any*/);
 			var cell = get_cell(X.read(b, opts).Sheets["Sheet1"], "C3");
 			/* NOTE: IE interprets 2-digit years as 19xx */
 			assert.ok(cell.w == '2014-02-19' || cell.w == '1914-02-19');
@@ -2235,7 +2282,7 @@ describe('CSV', function() {
 		});
 		it('should interpret dateNF', function() {
 			var bb = "1,2,3,\nTRUE,FALSE,,sheetjs\nfoo,bar,2/3/14,0.3\n,,,\nbaz,,qux,\n";
-			var opts = {type:"buffer", cellDates:true, dateNF:'m/d/yy'};
+			var opts = {type:"binary", cellDates:true, dateNF:'m/d/yy'};
 			var cell = get_cell(X.read(bb, opts).Sheets["Sheet1"], "C3");
 			assert.equal(cell.v.getMonth(), 1);
 			assert.equal(cell.w, "2/3/14");
@@ -2243,7 +2290,7 @@ describe('CSV', function() {
 			cell = get_cell(X.read(bb, opts).Sheets["Sheet1"], "C3");
 			assert.equal(cell.v.getMonth(), 2);
 			assert.equal(cell.w, "2/3/14");
-			opts = {type:"buffer", cellDates:true, dateNF:'m/d/yy', UTC: true};
+			opts = {type:"binary", cellDates:true, dateNF:'m/d/yy', UTC: true};
 			cell = get_cell(X.read(bb, opts).Sheets["Sheet1"], "C3");
 			assert.equal(cell.v.getUTCMonth(), 1);
 			assert.equal(cell.w, "2/3/14");
@@ -2252,11 +2299,11 @@ describe('CSV', function() {
 			assert.equal(cell.v.getUTCMonth(), 2);
 			assert.equal(cell.w, "2/3/14");
 		});
-		it('should interpret values by default', function() { plaintext_test(X.read(csv_bstr, {type:"buffer"}), false); });
+		it('should interpret values by default', function() { plaintext_test(X.read(csv_bstr, {type:"binary"}), false); });
 		it('should generate strings if raw option is passed', function() { plaintext_test(X.read(csv_str, {type:"string", raw:true}), true); });
 		it('should handle formulae', function() {
 			var bb = '=,=1+1,="100"';
-			var sheet = X.read(bb, {type:"buffer"}).Sheets["Sheet1"];
+			var sheet = X.read(bb, {type:"binary"}).Sheets["Sheet1"];
 			assert.equal(get_cell(sheet, "A1").t, 's');
 			assert.equal(get_cell(sheet, "A1").v, '=');
 			assert.equal(get_cell(sheet, "B1").f, '1+1');
@@ -2270,7 +2317,7 @@ describe('CSV', function() {
 		if(!browser || typeof cptable !== 'undefined') it('should honor codepage for binary strings', function() {
 			var data = "abc,def\nghi,j\xD3l";
 			[[1251, 'У'],[1252, 'Ó'], [1253, 'Σ'], [1254, 'Ó'], [1255, '׃'], [1256, 'س'], [10000, '”']].forEach(function(m) {
-				var ws = X.read(data, {type:"buffer", codepage:m[0]}).Sheets["Sheet1"];
+				var ws = X.read(data, {type:"binary", codepage:m[0]}).Sheets["Sheet1"];
 				assert.equal(get_cell(ws, "B2").v,  "j" + m[1] + "l");
 			});
 		});
@@ -2280,7 +2327,8 @@ describe('CSV', function() {
 				["3b", "3 b", "3 b-1"],
 				["3p", "3 P", "3 p-1"]
 			];
-			var ws = X.read(aoa.map(function(row) { return row.join(","); }).join("\n"), {type: "string", cellDates: true}).Sheets.Sheet1;
+
+			var ws = X.read(aoa.map(function(row) { return row.join(","); }).join("\n"), {type: "string", cellDates: true, UTC: false}).Sheets.Sheet1;
 			for(var R = 0; R < 3; ++R) {
 				assert.equal(get_cell(ws, "A" + (R+1)).v, aoa[R][0]);
 				assert.equal(get_cell(ws, "C" + (R+1)).v, aoa[R][2]);
@@ -2288,15 +2336,12 @@ describe('CSV', function() {
 			assert.equal(get_cell(ws, "B2").v, "3 b");
 			var B1 = get_cell(ws, "B1"); assert.equal(B1.t, "d"); assert.equal(B1.v.getHours(), 3);
 			var B3 = get_cell(ws, "B3"); assert.equal(B3.t, "d"); assert.equal(B3.v.getHours(), 15);
-			ws = X.read(aoa.map(function(row) { return row.join(","); }).join("\n"), {type: "string", cellDates: false}).Sheets.Sheet1;
+			ws = X.read(aoa.map(function(row) { return row.join(","); }).join("\n"), {type: "string", cellDates: false, UTC: false}).Sheets.Sheet1;
 			for(var R = 0; R < 3; ++R) {
 				assert.equal(get_cell(ws, "A" + (R+1)).v, aoa[R][0]);
 				assert.equal(get_cell(ws, "C" + (R+1)).v, aoa[R][2]);
 			}
 			assert.equal(get_cell(ws, "B2").v, "3 b");
-			/* this particular case is not well-defined */
-			//var B1 = get_cell(ws, "B1"); assert.equal(B1.t, "n"); assert.equal((24 + Math.round(B1.v * 24)) % 24, Math.round(3 + 24 + new Date(1899,11,31,0,0,0,0).getTimezoneOffset()/60) % 24);
-			//var B3 = get_cell(ws, "B3"); assert.equal(B3.t, "n"); assert.equal((24 + Math.round(B3.v * 24)) % 24, Math.round(15 + 24 + new Date(1899,11,31,0,0,0,0).getTimezoneOffset()/60) % 24);
 
 			ws = X.read(aoa.map(function(row) { return row.join(","); }).join("\n"), {type: "string", cellDates: true, UTC: true}).Sheets.Sheet1;
 			for(var R = 0; R < 3; ++R) {
@@ -2426,24 +2471,24 @@ describe('sylk', function() {
 		it('codepage', cpavail ? function() {
 			var str = "ID;PWXL;N;E\r\nC;X1;Y1;K\"a – b\"\r\nE", A1 =  "a – b";
 			assert.equal(get_cell(X.read(str, {type:"string"}).Sheets["Sheet1"], "A1").v, A1);
-			assert.equal(get_cell(X.read(str.replace(/–/, "\x96"), {type:"buffer", codepage:1252}).Sheets["Sheet1"], "A1").v, A1);
+			assert.equal(get_cell(X.read(str.replace(/–/, "\x96"), {type:"binary", codepage:1252}).Sheets["Sheet1"], "A1").v, A1);
 			if(typeof Buffer !== 'undefined' && !browser) {
 				assert.equal(get_cell(X.read(Buffer_from(str), {type:"buffer", codepage:65001}).Sheets["Sheet1"], "A1").v, A1);
-				assert.equal(get_cell(X.read(Buffer_from(str.replace(/–/, "\x96"), "buffer"), {type:"buffer", codepage:1252}).Sheets["Sheet1"], "A1").v, A1);
+				assert.equal(get_cell(X.read(Buffer_from(str.replace(/–/, "\x96"), "binary"), {type:"buffer", codepage:1252}).Sheets["Sheet1"], "A1").v, A1);
 			}
 		} : null);
 	});
 	describe('date system', function() {
 		function make_slk(d1904) { return "ID;PSheetJS\nP;Pd\\/m\\/yy\nP;Pd\\/m\\/yyyy\n" + (d1904 != null ? "O;D;V" + d1904 : "") + "\nF;P0;FG0G;X1;Y1\nC;K1\nE"; }
 		it('should default to 1900', function() {
-			assert.equal(get_cell(X.read(make_slk(), {type: "buffer"}).Sheets["Sheet1"], "A1").v, 1);
-			assert.ok(get_cell(X.read(make_slk(), {type: "buffer", cellDates: true}).Sheets["Sheet1"], "A1").v.getFullYear() < 1902);
-			assert.equal(get_cell(X.read(make_slk(5), {type: "buffer"}).Sheets["Sheet1"], "A1").v, 1);
-			assert.ok(get_cell(X.read(make_slk(5), {type: "buffer", cellDates: true}).Sheets["Sheet1"], "A1").v.getFullYear() < 1902);
+			assert.equal(get_cell(X.read(make_slk(), {type: "binary"}).Sheets["Sheet1"], "A1").v, 1);
+			assert.ok(get_cell(X.read(make_slk(), {type: "binary", cellDates: true}).Sheets["Sheet1"], "A1").v.getFullYear() < 1902);
+			assert.equal(get_cell(X.read(make_slk(5), {type: "binary"}).Sheets["Sheet1"], "A1").v, 1);
+			assert.ok(get_cell(X.read(make_slk(5), {type: "binary", cellDates: true}).Sheets["Sheet1"], "A1").v.getFullYear() < 1902);
 		});
 		it('should use 1904 when specified', function() {
-			assert.ok(get_cell(X.read(make_slk(1), {type: "buffer", cellDates: true}).Sheets["Sheet1"], "A1").v.getFullYear() > 1902);
-			assert.ok(get_cell(X.read(make_slk(4), {type: "buffer", cellDates: true}).Sheets["Sheet1"], "A1").v.getFullYear() > 1902);
+			assert.ok(get_cell(X.read(make_slk(1), {type: "binary", cellDates: true}).Sheets["Sheet1"], "A1").v.getFullYear() > 1902);
+			assert.ok(get_cell(X.read(make_slk(4), {type: "binary", cellDates: true}).Sheets["Sheet1"], "A1").v.getFullYear() > 1902);
 		});
 	});
 });
@@ -2481,25 +2526,32 @@ describe('dbf', function() {
 		['d11',  dir + 'dbf/d11.dbf'],
 		['vfp3', dir + 'dbf/vfp3.dbf']
 	]/*:any*/);
-	var wbstrue = ([]);
 	var wbsfalse = ([]);
+	var wbstrue = ([]);
 	var bef = (function() {
-		wbsfalse = wbs.map(function(x) { return [x[0], X.read(fs.readFileSync(x[1]), { type:TYPE, UTC: false })]; });
-		wbstrue  = wbs.map(function(x) { return [x[0], X.read(fs.readFileSync(x[1]), { type:TYPE, UTC: true })]; });
+		wbsfalse = wbs.map(function(x) { return [x[0], X.read(fs.readFileSync(x[1]), { type:TYPE, cellDates: false })]; });
+		wbstrue  = wbs.map(function(x) { return [x[0], X.read(fs.readFileSync(x[1]), { type:TYPE, cellDates: true })]; });
 	});
 	if(typeof before != 'undefined') before(bef);
 	else it('before', bef);
 	it(wbs[1][0], function() {
-		var wstrue = wbstrue[1][1].Sheets["Sheet1"];
 		var wsfalse = wbsfalse[1][1].Sheets["Sheet1"];
 		[
-			["A1", "v", "CHAR10"], ["A2", "v", "test1"], ["B2", "v", 123.45], ["C2", "v", 12.345], ["D2", "v", 1234.1],
-			["E2", "w", "19170219", (new Date(1917,1,19).getTimezoneOffset() > 0 ? "19170218" : "19170219")],
-			["F2", "w", "19170219", (new Date(1917,1,19).getTimezoneOffset() > 0 ? "19170218" : "19170219")],
-			["G2", "v", 1231.4], ["H2", "v", 123234], ["I2", "v", true], ["L2", "v", "SheetJS"]
+			["A1", "v", "CHAR10"], ["A2", "v", "test1"], ["B2", "v", 123.45],
+			["C2", "v", 12.345], ["D2", "v", 1234.1],
+			["E2", "v", 6260], ["E2", "w", "19170219"],
+			["F2", "v", 6260], ["F2", "w", "19170219"],
+			["G2", "v", 1231.4], ["H2", "v", 123234],
+			["I2", "v", true], ["L2", "v", "SheetJS"]
 		].forEach(function(r) {
-			assert.equal(get_cell(wstrue, r[0])[r[1]], r[2]);
-			assert.equal(get_cell(wsfalse, r[0])[r[1]], r[3] || r[2]);
+			assert.equal(get_cell(wsfalse, r[0])[r[1]], r[2]);
+		});
+		var wstrue = wbstrue[1][1].Sheets["Sheet1"];
+		[
+			["E2", "v", Date.UTC(1917,1,19,0,0,0,0)], ["E2", "w", "19170219"],
+			["F2", "v", Date.UTC(1917,1,19,0,0,0,0)], ["F2", "w", "19170219"]
+		].forEach(function(r) {
+			assert.equal(get_cell(wstrue, r[0])[r[1]].valueOf(), r[2].valueOf());
 		});
 	});
 	if(!browser || typeof cptable !== 'undefined') it("Ś╫êëτ⌡ś and Š╫ěéτ⌡š", function() {
@@ -2513,8 +2565,7 @@ describe('dbf', function() {
 		});
 	});
 });
-//import { JSDOM } from 'jsdom';
-const JSDOM = void 0;
+import { JSDOM } from 'jsdom';
 var domtest = true;
 var inserted_dom_elements = [];
 
@@ -2539,8 +2590,8 @@ describe('HTML', function() {
 		inserted_dom_elements = [];
 	});
 	describe('input string', function() {
-		it('should interpret values by default', function() { plaintext_test(X.read(html_bstr, {type:"buffer"}), false); });
-		it('should generate strings if raw option is passed', function() { plaintext_test(X.read(html_bstr, {type:"buffer", raw:true}), true); });
+		it('should interpret values by default', function() { plaintext_test(X.read(html_bstr, {type:"binary"}), false); });
+		it('should generate strings if raw option is passed', function() { plaintext_test(X.read(html_bstr, {type:"binary", raw:true}), true); });
 		it('should handle "string" type', function() { plaintext_test(X.read(html_str, {type:"string"}), false); });
 		it('should handle newlines correctly', function() {
 			var table = "<table><tr><td>foo<br/>bar</td><td>baz</td></tr></table>";
@@ -2657,10 +2708,34 @@ describe('HTML', function() {
 			assert.equal(range.e.c, expectedCellCount - 1);
 		});
 	});
+	if(domtest) it('should handle numeric NaN and Infinity', function() {
+		var ws = {
+			"!data": [
+				[ { t: "s", v: "Inf+" }, { t: "n", v: Infinity } ],
+				[ { t: "s", v: "Inf-" }, { t: "n", v: -Infinity } ],
+				[ { t: "s", v: "NaN" },  { t: "n", v: NaN } ],
+			],
+			"!ref": "A1:B3"
+		};
+		var wb = X.utils.book_new(ws, "Sheet1");
+		var str = X.write(wb, { type: "string", bookType: "html" });
+		var wb2 = X.utils.table_to_book(get_dom_element(str));
+		var csv = X.utils.sheet_to_csv(wb2.Sheets.Sheet1).split(/[\r\n]+/);
+		assert.equal(csv.length, 3);
+		assert.equal(csv[0], "Inf+,#DIV/0!");
+		assert.equal(csv[1], "Inf-,#DIV/0!");
+		assert.equal(csv[2], "NaN,#NUM!");
+		assert.equal(wb2.Sheets.Sheet1.B1.t, "e");
+		assert.equal(wb2.Sheets.Sheet1.B2.t, "e");
+		assert.equal(wb2.Sheets.Sheet1.B3.t, "e");
+		assert.equal(wb2.Sheets.Sheet1.B1.v, 0x07);
+		assert.equal(wb2.Sheets.Sheet1.B2.v, 0x07);
+		assert.equal(wb2.Sheets.Sheet1.B3.v, 0x24);
+	});
 });
 
 describe('js -> file -> js', function() {
-	var wb, BIN="buffer";
+	var wb, BIN="binary";
 	var bef = (function() {
 		var ws = X.utils.aoa_to_sheet([
 			["number", "bool", "string",  "date"],
@@ -2714,6 +2789,97 @@ describe('rtf', function() {
 	});
 });
 
+describe('dense mode', function() {
+	it('sheet_new', function() {
+		var sp = X.utils.sheet_new(); assert.ok(!sp["!data"]);
+		sp = X.utils.sheet_new({}); assert.ok(!sp["!data"]);
+		sp = X.utils.sheet_new({dense: false}); assert.ok(!sp["!data"]);
+		sp = X.utils.sheet_new({dense: true}); assert.ok(!!sp["!data"]);
+	});
+
+	it('read', function() {
+		ILPaths.forEach(function(p) {
+			var wb = X.read(fs.readFileSync(p), {type: TYPE, WTF: true});
+			var ws = wb.Sheets[wb.SheetNames[0]];
+			assert.equal(ws["A1"].v, "Link to Sheet2");
+			assert.ok(!ws["!data"]);
+
+			wb = X.read(fs.readFileSync(p), {type: TYPE, WTF: true, dense: true});
+			ws = wb.Sheets[wb.SheetNames[0]];
+			assert.ok(!ws["A1"]);
+			assert.equal(ws["!data"][0][0].v, "Link to Sheet2");
+		});
+		if(!browser) artifax.forEach(function(p) {
+			var wb = X.read(fs.readFileSync(p), {type: TYPE, WTF: true});
+			var ws = wb.Sheets[wb.SheetNames[0]];
+			assert.ok(ws["A1"]);
+			assert.ok(!ws["!data"]);
+
+			wb = X.read(fs.readFileSync(p), {type: TYPE, WTF: true, dense: true});
+			ws = wb.Sheets[wb.SheetNames[0]];
+			assert.ok(!ws["A1"]);
+			assert.ok(ws["!data"][0][0]);
+		});
+	});
+	it('aoa_to_sheet', function() {
+		var aoa = [["SheetJS"],[5433795]];
+		var sp = X.utils.aoa_to_sheet(aoa); assert.equal(sp["A2"].v, 5433795); assert.ok(!sp["!data"]);
+		sp = X.utils.aoa_to_sheet(aoa, {}); assert.equal(sp["A2"].v, 5433795); assert.ok(!sp["!data"]);
+		sp = X.utils.aoa_to_sheet(aoa, {dense: false}); assert.equal(sp["A2"].v, 5433795); assert.ok(!sp["!data"]);
+		var ds = X.utils.aoa_to_sheet(aoa, {dense: true}); assert.equal(ds["!data"][1][0].v, 5433795); assert.ok(!ds["A2"]);
+	});
+	it('json_to_sheet', function() {
+		var json = [{"SheetJS": 5433795}];
+		var sp = X.utils.json_to_sheet(json); assert.equal(sp["A2"].v, 5433795); assert.ok(!sp["!data"]);
+		sp = X.utils.json_to_sheet(json, {}); assert.equal(sp["A2"].v, 5433795); assert.ok(!sp["!data"]);
+		sp = X.utils.json_to_sheet(json, {dense: false}); assert.equal(sp["A2"].v, 5433795); assert.ok(!sp["!data"]);
+		var ds = X.utils.json_to_sheet(json, {dense: true}); assert.equal(ds["!data"][1][0].v, 5433795); assert.ok(!ds["A2"]);
+	});
+	it('sheet_add_aoa', function() {
+		var aoa = [["SheetJS"]];
+		var sp = X.utils.aoa_to_sheet(aoa); X.utils.sheet_add_aoa(sp, [[5433795]], {origin:-1}); assert.equal(sp["A2"].v, 5433795); assert.ok(!sp["!data"]);
+		sp = X.utils.aoa_to_sheet(aoa); X.utils.sheet_add_aoa(sp, [[5433795]], {origin:-1, dense: true}); assert.equal(sp["A2"].v, 5433795); assert.ok(!sp["!data"]);
+		var ds = X.utils.aoa_to_sheet(aoa, {dense: true}); X.utils.sheet_add_aoa(ds, [[5433795]], {origin:-1}); assert.equal(ds["!data"][1][0].v, 5433795); assert.ok(!ds["A2"]);
+		ds = X.utils.aoa_to_sheet(aoa, {dense: true}); X.utils.sheet_add_aoa(ds, [[5433795]], {origin:-1, dense: true}); assert.equal(ds["!data"][1][0].v, 5433795); assert.ok(!ds["A2"]);
+	});
+	it('sheet_add_json', function() {
+		var aoa = [["SheetJS"]];
+		var sp = X.utils.aoa_to_sheet(aoa); X.utils.sheet_add_json(sp, [{X:5433795}], {origin:-1, skipHeader:1}); assert.equal(sp["A2"].v, 5433795); assert.ok(!sp["!data"]);
+		sp = X.utils.aoa_to_sheet(aoa); X.utils.sheet_add_json(sp, [{X:5433795}], {origin:-1, skipHeader: 1, dense: true}); assert.equal(sp["A2"].v, 5433795); assert.ok(!sp["!data"]);
+		var ds = X.utils.aoa_to_sheet(aoa, {dense: true}); X.utils.sheet_add_json(ds, [{X:5433795}], {origin:-1, skipHeader: 1}); assert.equal(ds["!data"][1][0].v, 5433795); assert.ok(!ds["A2"]);
+		ds = X.utils.aoa_to_sheet(aoa, {dense: true}); X.utils.sheet_add_json(ds, [{X:5433795}], {origin:-1, skipHeader: 1, dense: true}); assert.equal(ds["!data"][1][0].v, 5433795); assert.ok(!ds["A2"]);
+	});
+	ofmt.forEach(function(f) { it('write ' + f, function() {
+		var aoa = [["SheetJS"],[5433795]];
+		var wb = X.utils.book_new(X.utils.aoa_to_sheet(aoa));
+		var newwb = X.read(X.write(wb, {type:"binary", bookType:f}), {type:"binary"});
+		assert.equal(get_cell(newwb.Sheets["Sheet1"], "A1").v, "SheetJS");
+		assert.equal(get_cell(newwb.Sheets["Sheet1"], "A2").v, 5433795);
+	}); });
+	it('sheet_to_formulae', function() {
+		var w = ['xlsx', paths.fstxlsx];
+		var wb1 = X.read(fs.readFileSync(w[1]), {type:TYPE, cellFormula:true, WTF:true, dense: false});
+		var wb2 = X.read(fs.readFileSync(w[1]), {type:TYPE, cellFormula:true, WTF:true, dense: true});
+		wb1.SheetNames.forEach(function(n) {
+			assert.equal(
+				X.utils.sheet_to_formulae(wb1.Sheets[n]).sort().join("\n"),
+				X.utils.sheet_to_formulae(wb2.Sheets[n]).sort().join("\n")
+			);
+		});
+	});
+	it('sheet_to_csv', function() {
+		var w = ['xlsx', paths.fstxlsx];
+		var wb1 = X.read(fs.readFileSync(w[1]), {type:TYPE, cellFormula:true, WTF:true, dense: false});
+		var wb2 = X.read(fs.readFileSync(w[1]), {type:TYPE, cellFormula:true, WTF:true, dense: true});
+		wb1.SheetNames.forEach(function(n) {
+			assert.equal(
+				X.utils.sheet_to_csv(wb1.Sheets[n]),
+				X.utils.sheet_to_csv(wb2.Sheets[n])
+			);
+		});
+	});
+});
+
 describe('corner cases', function() {
 	it('output functions', function() {
 		var ws = X.utils.aoa_to_sheet([
@@ -2731,13 +2897,13 @@ describe('corner cases', function() {
 		ws['!cols'] = [ {wch:6}, {wch:7}, {wch:10}, {wch:20} ];
 
 		var wb = {SheetNames:['sheetjs'], Sheets:{sheetjs:ws}};
-		X.write(wb, {type: "buffer", bookType: 'xlsx'});
+		X.write(wb, {type: "binary", bookType: 'xlsx'});
 		X.write(wb, {type: TYPE, bookType: 'xlsm'});
 		X.write(wb, {type: "base64", bookType: 'xlsb'});
-		X.write(wb, {type: "buffer", bookType: 'ods'});
-		X.write(wb, {type: "buffer", bookType: 'biff2'});
-		X.write(wb, {type: "buffer", bookType: 'biff5'});
-		X.write(wb, {type: "buffer", bookType: 'biff8'});
+		X.write(wb, {type: "binary", bookType: 'ods'});
+		X.write(wb, {type: "binary", bookType: 'biff2'});
+		X.write(wb, {type: "binary", bookType: 'biff5'});
+		X.write(wb, {type: "binary", bookType: 'biff8'});
 		get_cell(ws,"A2").t = "f";
 		assert.throws(function() { X.utils.sheet_to_json(ws); });
 	});
@@ -2779,7 +2945,7 @@ describe('corner cases', function() {
 		}
 		var ws = X.utils.aoa_to_sheet(data);
 		var wb = { Sheets:{ Sheet1: ws }, SheetNames: ["Sheet1"] };
-		var type = "buffer";
+		var type = "binary";
 		["xlsb", "biff8", "biff5", "biff2"].forEach(function(btype) {
 			void X.read(X.write(wb, {bookType:btype, type:type}), {type:type});
 		});

test.ts

@@ -388,9 +388,9 @@ Deno.test('should parse test files', async function(t) {
 });
 
 function get_cell(ws: X.WorkSheet, addr: string) {
-	if(!Array.isArray(ws)) return ws[addr];
+	if(!Array.isArray(ws["!data"])) return ws[addr];
 	var a = X.utils.decode_cell(addr);
-	return (ws[a.r]||[])[a.c];
+	return (ws["!data"][a.r]||[])[a.c];
 }
 
 function each_cell(ws: X.WorkSheet, f: (c: X.CellObject) => any) {
@@ -1035,6 +1035,8 @@ Deno.test('parse features', async function(t) {
 		var wbs: X.WorkBook[] = [], wbs_no_slk: X.WorkBook[] = [];
 			wbs = CWPaths.map(function(n) { return X.read(fs.readFileSync(n), {type:TYPE, cellStyles:true}); });
 			wbs_no_slk = wbs.slice(0, 5);
+			/* */
+			var ols = OLPaths.map(function(p) { return X.read(fs.readFileSync(p), {type:TYPE, cellStyles:true}); });
 		await t.step('should have "!cols"', async function(t) {
 			wbs.forEach(function(wb) { assert.assert(wb.Sheets["Sheet1"]['!cols']); });
 		});
@@ -1066,6 +1068,22 @@ Deno.test('parse features', async function(t) {
 				assert.equal(x?.[7].wpx, 101);
 			});
 		});
+		await t.step('should have correct outline levels', async function(t) {
+			ols.map(function(x) { return x.Sheets["Sheet1"]; }).forEach(function(ws) {
+				var cols = ws['!cols'];
+				if(!cols) return; // TODO: ODS!!!
+				for(var i = 0; i < 29; ++i) {
+					var cell = get_cell(ws, X.utils.encode_col(i) + "1");
+					var lvl = (cols[i]||{}).level||0;
+					if(!cell || cell.t == 's') assert.equal(lvl, 0);
+					else if(cell.t == 'n') {
+						if(cell.v === 0) assert.equal(lvl, 0);
+						else assert.equal(lvl, cell.v);
+					}
+				}
+				assert.equal(cols[29].level, 7);
+			});
+		});
 	});
 
 	await t.step('row properties', async function(t) {
@@ -1833,6 +1851,32 @@ Deno.test('roundtrip features', async function(t) {
 		assert.assert(wb7.Workbook?.WBProps?.date1904);
 	}); });
 
+	await t.step('should handle numeric NaN and Infinity', async function(t) {([
+		"xlsx", "xlsm", "xlsb", "xls", "biff5", "biff4", "biff3", "biff2", "xlml", "csv", "txt", "sylk", "html", "rtf", "prn", "eth", "ods", "fods"
+	] as Array<X.BookType>).forEach(function(ext) {
+		var ws: X.DenseWorkSheet = {
+			"!data": [
+				[ { t: "s", v: "Inf+" }, { t: "n", v: Infinity } ],
+				[ { t: "s", v: "Inf-" }, { t: "n", v: -Infinity } ],
+				[ { t: "s", v: "NaN" },  { t: "n", v: NaN } ],
+			],
+			"!ref": "A1:B3"
+		};
+		var wb = X.utils.book_new(ws, "Sheet1");
+		var buf = X.write(wb, { type: TYPE, bookType: ext, numbers: XLSX_ZAHL });
+		var wb2 = X.read(buf, { type: TYPE, PRN: true });
+		var csv = X.utils.sheet_to_csv(wb2.Sheets.Sheet1).split(/[\r\n]+/);
+		assert.equal(csv.length, 3);
+		assert.equal(csv[0], "Inf+,#DIV/0!");
+		assert.equal(csv[1], "Inf-,#DIV/0!");
+		assert.equal(csv[2], "NaN,#NUM!");
+		assert.equal(wb2.Sheets.Sheet1.B1.t, "e");
+		assert.equal(wb2.Sheets.Sheet1.B2.t, "e");
+		assert.equal(wb2.Sheets.Sheet1.B3.t, "e");
+		assert.equal(wb2.Sheets.Sheet1.B1.v, 0x07);
+		assert.equal(wb2.Sheets.Sheet1.B2.v, 0x07);
+		assert.equal(wb2.Sheets.Sheet1.B3.v, 0x24);
+	}); });
 });
 
 //function password_file(x){return x.match(/^password.*\.xls$/); }
@@ -2585,6 +2629,30 @@ Deno.test('HTML', async function(t) {
 			assert.equal(range.e.c, expectedCellCount - 1);
 		});
 	});
+	if(domtest) await t.step('should handle numeric NaN and Infinity', async function(t) {
+		var ws: X.DenseWorkSheet = {
+			"!data": [
+				[ { t: "s", v: "Inf+" }, { t: "n", v: Infinity } ],
+				[ { t: "s", v: "Inf-" }, { t: "n", v: -Infinity } ],
+				[ { t: "s", v: "NaN" },  { t: "n", v: NaN } ],
+			],
+			"!ref": "A1:B3"
+		};
+		var wb = X.utils.book_new(ws, "Sheet1");
+		var str = X.write(wb, { type: "string", bookType: "html" });
+		var wb2 = X.utils.table_to_book(get_dom_element(str));
+		var csv = X.utils.sheet_to_csv(wb2.Sheets.Sheet1).split(/[\r\n]+/);
+		assert.equal(csv.length, 3);
+		assert.equal(csv[0], "Inf+,#DIV/0!");
+		assert.equal(csv[1], "Inf-,#DIV/0!");
+		assert.equal(csv[2], "NaN,#NUM!");
+		assert.equal(wb2.Sheets.Sheet1.B1.t, "e");
+		assert.equal(wb2.Sheets.Sheet1.B2.t, "e");
+		assert.equal(wb2.Sheets.Sheet1.B3.t, "e");
+		assert.equal(wb2.Sheets.Sheet1.B1.v, 0x07);
+		assert.equal(wb2.Sheets.Sheet1.B2.v, 0x07);
+		assert.equal(wb2.Sheets.Sheet1.B3.v, 0x24);
+	});
 });
 
 Deno.test('js -> file -> js', async function(t) {
@@ -2638,6 +2706,99 @@ Deno.test('rtf', async function(t) {
 	});
 });
 
+Deno.test('dense mode', async function(t) {
+	await t.step('sheet_new', async function(t) {
+		var sp = X.utils.sheet_new(); assert.assert(!sp["!data"]);
+		sp = X.utils.sheet_new({}); assert.assert(!sp["!data"]);
+		sp = X.utils.sheet_new({dense: false}); assert.assert(!sp["!data"]);
+		sp = X.utils.sheet_new({dense: true}); assert.assert(!!sp["!data"]);
+	});
+
+	await t.step('read', async function(t) {
+		ILPaths.forEach(function(p) {
+			var wb = X.read(fs.readFileSync(p), {type: TYPE, WTF: true});
+			var ws: X.WorkSheet = wb.Sheets[wb.SheetNames[0]];
+			assert.equal(ws["A1"].v, "Link to Sheet2");
+			assert.assert(!ws["!data"]);
+
+			wb = X.read(fs.readFileSync(p), {type: TYPE, WTF: true, dense: true});
+			ws = wb.Sheets[wb.SheetNames[0]];
+			assert.assert(!ws["A1"]);
+			assert.equal(ws["!data"]?.[0][0].v, "Link to Sheet2");
+		});
+		if(!browser) artifax.forEach(function(p) {
+			var wb = X.read(fs.readFileSync(p), {type: TYPE, WTF: true});
+			var ws = wb.Sheets[wb.SheetNames[0]];
+			assert.assert(ws["A1"]);
+			assert.assert(!ws["!data"]);
+
+			wb = X.read(fs.readFileSync(p), {type: TYPE, WTF: true, dense: true});
+			ws = wb.Sheets[wb.SheetNames[0]];
+			assert.assert(!ws["A1"]);
+			assert.assert(!!ws["!data"]);
+			assert.assert(ws["!data"]?.[0][0]);
+		});
+	});
+	await t.step('aoa_to_sheet', async function(t) {
+		var aoa = [["SheetJS"],[5433795]];
+		var sp = X.utils.aoa_to_sheet(aoa); assert.equal(sp["A2"].v, 5433795); assert.assert(!sp["!data"]);
+		sp = X.utils.aoa_to_sheet(aoa, {}); assert.equal(sp["A2"].v, 5433795); assert.assert(!sp["!data"]);
+		sp = X.utils.aoa_to_sheet(aoa, {dense: false}); assert.equal(sp["A2"].v, 5433795); assert.assert(!sp["!data"]);
+		var ds = X.utils.aoa_to_sheet(aoa, {dense: true}); assert.equal(ds["!data"]?.[1][0].v, 5433795); assert.assert(!ds["A2"]);
+	});
+	await t.step('json_to_sheet', async function(t) {
+		var json = [{"SheetJS": 5433795}];
+		var sp = X.utils.json_to_sheet(json); assert.equal(sp["A2"].v, 5433795); assert.assert(!sp["!data"]);
+		sp = X.utils.json_to_sheet(json, {}); assert.equal(sp["A2"].v, 5433795); assert.assert(!sp["!data"]);
+		sp = X.utils.json_to_sheet(json, {dense: false}); assert.equal(sp["A2"].v, 5433795); assert.assert(!sp["!data"]);
+		var ds = X.utils.json_to_sheet(json, {dense: true}); assert.equal(ds["!data"]?.[1][0].v, 5433795); assert.assert(!ds["A2"]);
+	});
+	await t.step('sheet_add_aoa', async function(t) {
+		var aoa = [["SheetJS"]];
+		var sp = X.utils.aoa_to_sheet(aoa); X.utils.sheet_add_aoa(sp, [[5433795]], {origin:-1}); assert.equal(sp["A2"].v, 5433795); assert.assert(!sp["!data"]);
+		sp = X.utils.aoa_to_sheet(aoa); X.utils.sheet_add_aoa(sp, [[5433795]], {origin:-1, dense: true}); assert.equal(sp["A2"].v, 5433795); assert.assert(!sp["!data"]);
+		var ds:X.WorkSheet = X.utils.aoa_to_sheet(aoa, {dense: true}); X.utils.sheet_add_aoa(ds, [[5433795]], {origin:-1}); assert.equal(ds["!data"]?.[1][0].v, 5433795); assert.assert(!ds["A2"]);
+		ds = X.utils.aoa_to_sheet(aoa, {dense: true}); X.utils.sheet_add_aoa(ds, [[5433795]], {origin:-1, dense: true}); assert.equal(ds["!data"]?.[1][0].v, 5433795); assert.assert(!ds["A2"]);
+	});
+	await t.step('sheet_add_json', async function(t) {
+		var aoa = [["SheetJS"]];
+		var sp = X.utils.aoa_to_sheet(aoa); X.utils.sheet_add_json(sp, [{X:5433795}], {origin:-1, skipHeader:true}); assert.equal(sp["A2"].v, 5433795); assert.assert(!sp["!data"]);
+		sp = X.utils.aoa_to_sheet(aoa); X.utils.sheet_add_json(sp, [{X:5433795}], {origin:-1, skipHeader: true, dense: true}); assert.equal(sp["A2"].v, 5433795); assert.assert(!sp["!data"]);
+		var ds:X.WorkSheet = X.utils.aoa_to_sheet(aoa, {dense: true}); X.utils.sheet_add_json(ds, [{X:5433795}], {origin:-1, skipHeader: true}); assert.equal(ds["!data"]?.[1][0].v, 5433795); assert.assert(!ds["A2"]);
+		ds = X.utils.aoa_to_sheet(aoa, {dense: true}); X.utils.sheet_add_json(ds, [{X:5433795}], {origin:-1, skipHeader: true, dense: true}); assert.equal(ds["!data"]?.[1][0].v, 5433795); assert.assert(!ds["A2"]);
+	});
+	for(var ofmti = 0; ofmti < ofmt.length; ++ofmti) { var f = ofmt[ofmti];
+	await t.step('write ' + f, async function(t) {
+		var aoa = [["SheetJS"],[5433795]];
+		var wb = X.utils.book_new(X.utils.aoa_to_sheet(aoa));
+		var newwb = X.read(X.write(wb, {type:"binary", bookType:f}), {type:"binary"});
+		assert.equal(get_cell(newwb.Sheets["Sheet1"], "A1").v, "SheetJS");
+		assert.equal(get_cell(newwb.Sheets["Sheet1"], "A2").v, 5433795);
+	}); }
+	await t.step('sheet_to_formulae', async function(t) {
+		var w = ['xlsx', paths.fstxlsx];
+		var wb1 = X.read(fs.readFileSync(w[1]), {type:TYPE, cellFormula:true, WTF:true, dense: false});
+		var wb2 = X.read(fs.readFileSync(w[1]), {type:TYPE, cellFormula:true, WTF:true, dense: true});
+		wb1.SheetNames.forEach(function(n) {
+			assert.equal(
+				X.utils.sheet_to_formulae(wb1.Sheets[n]).sort().join("\n"),
+				X.utils.sheet_to_formulae(wb2.Sheets[n]).sort().join("\n")
+			);
+		});
+	});
+	await t.step('sheet_to_csv', async function(t) {
+		var w = ['xlsx', paths.fstxlsx];
+		var wb1 = X.read(fs.readFileSync(w[1]), {type:TYPE, cellFormula:true, WTF:true, dense: false});
+		var wb2 = X.read(fs.readFileSync(w[1]), {type:TYPE, cellFormula:true, WTF:true, dense: true});
+		wb1.SheetNames.forEach(function(n) {
+			assert.equal(
+				X.utils.sheet_to_csv(wb1.Sheets[n]),
+				X.utils.sheet_to_csv(wb2.Sheets[n])
+			);
+		});
+	});
+});
+
 Deno.test('corner cases', async function(t) {
 	await t.step('output functions', async function(t) {
 		var ws = X.utils.aoa_to_sheet([

test_files

@@ -1 +0,0 @@
-Subproject commit 1ea05a3eee0a746c102dea42e729b31e4ebfca35

testnocp.ts

@@ -387,9 +387,9 @@ Deno.test('should parse test files', async function(t) {
 });
 
 function get_cell(ws: X.WorkSheet, addr: string) {
-	if(!Array.isArray(ws)) return ws[addr];
+	if(!Array.isArray(ws["!data"])) return ws[addr];
 	var a = X.utils.decode_cell(addr);
-	return (ws[a.r]||[])[a.c];
+	return (ws["!data"][a.r]||[])[a.c];
 }
 
 function each_cell(ws: X.WorkSheet, f: (c: X.CellObject) => any) {
@@ -1034,6 +1034,8 @@ Deno.test('parse features', async function(t) {
 		var wbs: X.WorkBook[] = [], wbs_no_slk: X.WorkBook[] = [];
 			wbs = CWPaths.map(function(n) { return X.read(fs.readFileSync(n), {type:TYPE, cellStyles:true}); });
 			wbs_no_slk = wbs.slice(0, 5);
+			/* */
+			var ols = OLPaths.map(function(p) { return X.read(fs.readFileSync(p), {type:TYPE, cellStyles:true}); });
 		await t.step('should have "!cols"', async function(t) {
 			wbs.forEach(function(wb) { assert.assert(wb.Sheets["Sheet1"]['!cols']); });
 		});
@@ -1065,6 +1067,22 @@ Deno.test('parse features', async function(t) {
 				assert.equal(x?.[7].wpx, 101);
 			});
 		});
+		await t.step('should have correct outline levels', async function(t) {
+			ols.map(function(x) { return x.Sheets["Sheet1"]; }).forEach(function(ws) {
+				var cols = ws['!cols'];
+				if(!cols) return; // TODO: ODS!!!
+				for(var i = 0; i < 29; ++i) {
+					var cell = get_cell(ws, X.utils.encode_col(i) + "1");
+					var lvl = (cols[i]||{}).level||0;
+					if(!cell || cell.t == 's') assert.equal(lvl, 0);
+					else if(cell.t == 'n') {
+						if(cell.v === 0) assert.equal(lvl, 0);
+						else assert.equal(lvl, cell.v);
+					}
+				}
+				assert.equal(cols[29].level, 7);
+			});
+		});
 	});
 
 	await t.step('row properties', async function(t) {
@@ -1832,6 +1850,32 @@ Deno.test('roundtrip features', async function(t) {
 		assert.assert(wb7.Workbook?.WBProps?.date1904);
 	}); });
 
+	await t.step('should handle numeric NaN and Infinity', async function(t) {([
+		"xlsx", "xlsm", "xlsb", "xls", "biff5", "biff4", "biff3", "biff2", "xlml", "csv", "txt", "sylk", "html", "rtf", "prn", "eth", "ods", "fods"
+	] as Array<X.BookType>).forEach(function(ext) {
+		var ws: X.DenseWorkSheet = {
+			"!data": [
+				[ { t: "s", v: "Inf+" }, { t: "n", v: Infinity } ],
+				[ { t: "s", v: "Inf-" }, { t: "n", v: -Infinity } ],
+				[ { t: "s", v: "NaN" },  { t: "n", v: NaN } ],
+			],
+			"!ref": "A1:B3"
+		};
+		var wb = X.utils.book_new(ws, "Sheet1");
+		var buf = X.write(wb, { type: TYPE, bookType: ext, numbers: XLSX_ZAHL });
+		var wb2 = X.read(buf, { type: TYPE, PRN: true });
+		var csv = X.utils.sheet_to_csv(wb2.Sheets.Sheet1).split(/[\r\n]+/);
+		assert.equal(csv.length, 3);
+		assert.equal(csv[0], "Inf+,#DIV/0!");
+		assert.equal(csv[1], "Inf-,#DIV/0!");
+		assert.equal(csv[2], "NaN,#NUM!");
+		assert.equal(wb2.Sheets.Sheet1.B1.t, "e");
+		assert.equal(wb2.Sheets.Sheet1.B2.t, "e");
+		assert.equal(wb2.Sheets.Sheet1.B3.t, "e");
+		assert.equal(wb2.Sheets.Sheet1.B1.v, 0x07);
+		assert.equal(wb2.Sheets.Sheet1.B2.v, 0x07);
+		assert.equal(wb2.Sheets.Sheet1.B3.v, 0x24);
+	}); });
 });
 
 //function password_file(x){return x.match(/^password.*\.xls$/); }
@@ -2584,6 +2628,30 @@ Deno.test('HTML', async function(t) {
 			assert.equal(range.e.c, expectedCellCount - 1);
 		});
 	});
+	if(domtest) await t.step('should handle numeric NaN and Infinity', async function(t) {
+		var ws: X.DenseWorkSheet = {
+			"!data": [
+				[ { t: "s", v: "Inf+" }, { t: "n", v: Infinity } ],
+				[ { t: "s", v: "Inf-" }, { t: "n", v: -Infinity } ],
+				[ { t: "s", v: "NaN" },  { t: "n", v: NaN } ],
+			],
+			"!ref": "A1:B3"
+		};
+		var wb = X.utils.book_new(ws, "Sheet1");
+		var str = X.write(wb, { type: "string", bookType: "html" });
+		var wb2 = X.utils.table_to_book(get_dom_element(str));
+		var csv = X.utils.sheet_to_csv(wb2.Sheets.Sheet1).split(/[\r\n]+/);
+		assert.equal(csv.length, 3);
+		assert.equal(csv[0], "Inf+,#DIV/0!");
+		assert.equal(csv[1], "Inf-,#DIV/0!");
+		assert.equal(csv[2], "NaN,#NUM!");
+		assert.equal(wb2.Sheets.Sheet1.B1.t, "e");
+		assert.equal(wb2.Sheets.Sheet1.B2.t, "e");
+		assert.equal(wb2.Sheets.Sheet1.B3.t, "e");
+		assert.equal(wb2.Sheets.Sheet1.B1.v, 0x07);
+		assert.equal(wb2.Sheets.Sheet1.B2.v, 0x07);
+		assert.equal(wb2.Sheets.Sheet1.B3.v, 0x24);
+	});
 });
 
 Deno.test('js -> file -> js', async function(t) {
@@ -2637,6 +2705,99 @@ Deno.test('rtf', async function(t) {
 	});
 });
 
+Deno.test('dense mode', async function(t) {
+	await t.step('sheet_new', async function(t) {
+		var sp = X.utils.sheet_new(); assert.assert(!sp["!data"]);
+		sp = X.utils.sheet_new({}); assert.assert(!sp["!data"]);
+		sp = X.utils.sheet_new({dense: false}); assert.assert(!sp["!data"]);
+		sp = X.utils.sheet_new({dense: true}); assert.assert(!!sp["!data"]);
+	});
+
+	await t.step('read', async function(t) {
+		ILPaths.forEach(function(p) {
+			var wb = X.read(fs.readFileSync(p), {type: TYPE, WTF: true});
+			var ws: X.WorkSheet = wb.Sheets[wb.SheetNames[0]];
+			assert.equal(ws["A1"].v, "Link to Sheet2");
+			assert.assert(!ws["!data"]);
+
+			wb = X.read(fs.readFileSync(p), {type: TYPE, WTF: true, dense: true});
+			ws = wb.Sheets[wb.SheetNames[0]];
+			assert.assert(!ws["A1"]);
+			assert.equal(ws["!data"]?.[0][0].v, "Link to Sheet2");
+		});
+		if(!browser) artifax.forEach(function(p) {
+			var wb = X.read(fs.readFileSync(p), {type: TYPE, WTF: true});
+			var ws = wb.Sheets[wb.SheetNames[0]];
+			assert.assert(ws["A1"]);
+			assert.assert(!ws["!data"]);
+
+			wb = X.read(fs.readFileSync(p), {type: TYPE, WTF: true, dense: true});
+			ws = wb.Sheets[wb.SheetNames[0]];
+			assert.assert(!ws["A1"]);
+			assert.assert(!!ws["!data"]);
+			assert.assert(ws["!data"]?.[0][0]);
+		});
+	});
+	await t.step('aoa_to_sheet', async function(t) {
+		var aoa = [["SheetJS"],[5433795]];
+		var sp = X.utils.aoa_to_sheet(aoa); assert.equal(sp["A2"].v, 5433795); assert.assert(!sp["!data"]);
+		sp = X.utils.aoa_to_sheet(aoa, {}); assert.equal(sp["A2"].v, 5433795); assert.assert(!sp["!data"]);
+		sp = X.utils.aoa_to_sheet(aoa, {dense: false}); assert.equal(sp["A2"].v, 5433795); assert.assert(!sp["!data"]);
+		var ds = X.utils.aoa_to_sheet(aoa, {dense: true}); assert.equal(ds["!data"]?.[1][0].v, 5433795); assert.assert(!ds["A2"]);
+	});
+	await t.step('json_to_sheet', async function(t) {
+		var json = [{"SheetJS": 5433795}];
+		var sp = X.utils.json_to_sheet(json); assert.equal(sp["A2"].v, 5433795); assert.assert(!sp["!data"]);
+		sp = X.utils.json_to_sheet(json, {}); assert.equal(sp["A2"].v, 5433795); assert.assert(!sp["!data"]);
+		sp = X.utils.json_to_sheet(json, {dense: false}); assert.equal(sp["A2"].v, 5433795); assert.assert(!sp["!data"]);
+		var ds = X.utils.json_to_sheet(json, {dense: true}); assert.equal(ds["!data"]?.[1][0].v, 5433795); assert.assert(!ds["A2"]);
+	});
+	await t.step('sheet_add_aoa', async function(t) {
+		var aoa = [["SheetJS"]];
+		var sp = X.utils.aoa_to_sheet(aoa); X.utils.sheet_add_aoa(sp, [[5433795]], {origin:-1}); assert.equal(sp["A2"].v, 5433795); assert.assert(!sp["!data"]);
+		sp = X.utils.aoa_to_sheet(aoa); X.utils.sheet_add_aoa(sp, [[5433795]], {origin:-1, dense: true}); assert.equal(sp["A2"].v, 5433795); assert.assert(!sp["!data"]);
+		var ds:X.WorkSheet = X.utils.aoa_to_sheet(aoa, {dense: true}); X.utils.sheet_add_aoa(ds, [[5433795]], {origin:-1}); assert.equal(ds["!data"]?.[1][0].v, 5433795); assert.assert(!ds["A2"]);
+		ds = X.utils.aoa_to_sheet(aoa, {dense: true}); X.utils.sheet_add_aoa(ds, [[5433795]], {origin:-1, dense: true}); assert.equal(ds["!data"]?.[1][0].v, 5433795); assert.assert(!ds["A2"]);
+	});
+	await t.step('sheet_add_json', async function(t) {
+		var aoa = [["SheetJS"]];
+		var sp = X.utils.aoa_to_sheet(aoa); X.utils.sheet_add_json(sp, [{X:5433795}], {origin:-1, skipHeader:true}); assert.equal(sp["A2"].v, 5433795); assert.assert(!sp["!data"]);
+		sp = X.utils.aoa_to_sheet(aoa); X.utils.sheet_add_json(sp, [{X:5433795}], {origin:-1, skipHeader: true, dense: true}); assert.equal(sp["A2"].v, 5433795); assert.assert(!sp["!data"]);
+		var ds:X.WorkSheet = X.utils.aoa_to_sheet(aoa, {dense: true}); X.utils.sheet_add_json(ds, [{X:5433795}], {origin:-1, skipHeader: true}); assert.equal(ds["!data"]?.[1][0].v, 5433795); assert.assert(!ds["A2"]);
+		ds = X.utils.aoa_to_sheet(aoa, {dense: true}); X.utils.sheet_add_json(ds, [{X:5433795}], {origin:-1, skipHeader: true, dense: true}); assert.equal(ds["!data"]?.[1][0].v, 5433795); assert.assert(!ds["A2"]);
+	});
+	for(var ofmti = 0; ofmti < ofmt.length; ++ofmti) { var f = ofmt[ofmti];
+	await t.step('write ' + f, async function(t) {
+		var aoa = [["SheetJS"],[5433795]];
+		var wb = X.utils.book_new(X.utils.aoa_to_sheet(aoa));
+		var newwb = X.read(X.write(wb, {type:"binary", bookType:f}), {type:"binary"});
+		assert.equal(get_cell(newwb.Sheets["Sheet1"], "A1").v, "SheetJS");
+		assert.equal(get_cell(newwb.Sheets["Sheet1"], "A2").v, 5433795);
+	}); }
+	await t.step('sheet_to_formulae', async function(t) {
+		var w = ['xlsx', paths.fstxlsx];
+		var wb1 = X.read(fs.readFileSync(w[1]), {type:TYPE, cellFormula:true, WTF:true, dense: false});
+		var wb2 = X.read(fs.readFileSync(w[1]), {type:TYPE, cellFormula:true, WTF:true, dense: true});
+		wb1.SheetNames.forEach(function(n) {
+			assert.equal(
+				X.utils.sheet_to_formulae(wb1.Sheets[n]).sort().join("\n"),
+				X.utils.sheet_to_formulae(wb2.Sheets[n]).sort().join("\n")
+			);
+		});
+	});
+	await t.step('sheet_to_csv', async function(t) {
+		var w = ['xlsx', paths.fstxlsx];
+		var wb1 = X.read(fs.readFileSync(w[1]), {type:TYPE, cellFormula:true, WTF:true, dense: false});
+		var wb2 = X.read(fs.readFileSync(w[1]), {type:TYPE, cellFormula:true, WTF:true, dense: true});
+		wb1.SheetNames.forEach(function(n) {
+			assert.equal(
+				X.utils.sheet_to_csv(wb1.Sheets[n]),
+				X.utils.sheet_to_csv(wb2.Sheets[n])
+			);
+		});
+	});
+});
+
 Deno.test('corner cases', async function(t) {
 	await t.step('output functions', async function(t) {
 		var ws = X.utils.aoa_to_sheet([

tests.lst

@@ -690,7 +690,6 @@ apachepoi_15573.xls
 apachepoi_1904DateWindowing.xls
 apachepoi_19599-1.xls
 apachepoi_19599-2.xls
-apachepoi_22742.xls
 apachepoi_24207.xls
 apachepoi_24215.xls
 apachepoi_25183.xls

tests/core.js

@@ -54,7 +54,7 @@ if(!browser) {
 	for(var _fileAi = 0; _fileAi < _fileA.length; ++_fileAi) if(test_file(_fileA[_fileAi])) fileA.push(_fileA[_fileAi]);
 }
 
-var can_write_numbers = typeof Array.prototype.findIndex == "function" && typeof Uint8Array !== "undefined" && typeof Uint8Array.prototype.indexOf == "function";
+var can_write_numbers = typeof Set !== "undefined" && typeof Array.prototype.findIndex == "function" && typeof Uint8Array !== "undefined" && typeof Uint8Array.prototype.indexOf == "function";
 
 /* Excel enforces 31 character sheet limit, although technical file limit is 255 */
 function fixsheetname(x/*:string*/)/*:string*/ { return x.substr(0,31); }
@@ -800,6 +800,17 @@ describe('API', function() {
 		]);
 		if(assert.deepEqual) assert.deepEqual(data.A2, { l: { Target: 'https://123.com' }, v: 'url', t: 's' });
 	});
+	it('sheet_to_formulae', function() {
+		var ws = X.utils.aoa_to_sheet([
+			["a", "b", "c"],
+			[1, 2, 3],
+			[4, 5, 6]
+		], {dense: true});
+		ws["!data"][2][0].f = "2*B2";
+		ws["!data"][2][1].f = "B2+C2";
+		assert.equal(X.utils.sheet_to_formulae(ws).join("\n"), "A1='a\nB1='b\nC1='c\nA2=1\nB2=2\nC2=3\nA3=2*B2\nB3=B2+C2\nC3=6");
+		assert.equal(X.utils.sheet_to_formulae(ws, {values: false}).join("\n"), "A3=2*B2\nB3=B2+C2");
+	});
 	it('decode_range', function() {
 		var _c = "ABC", _r = "123", _C = "DEF", _R = "456";
 
@@ -1889,6 +1900,32 @@ describe('roundtrip features', function() {
 		assert.ok(wb7.Workbook.WBProps.date1904);
 	}); });
 
+	it('should handle numeric NaN and Infinity', function() {[
+		"xlsx", "xlsm", "xlsb", "xls", "biff5", "biff4", "biff3", "biff2", "xlml", "csv", "txt", "sylk", "html", "rtf", "prn", "eth", "ods", "fods"
+	].forEach(function(ext) {
+		var ws = {
+			"!data": [
+				[ { t: "s", v: "Inf+" }, { t: "n", v: Infinity } ],
+				[ { t: "s", v: "Inf-" }, { t: "n", v: -Infinity } ],
+				[ { t: "s", v: "NaN" },  { t: "n", v: NaN } ],
+			],
+			"!ref": "A1:B3"
+		};
+		var wb = X.utils.book_new(ws, "Sheet1");
+		var buf = X.write(wb, { type: TYPE, bookType: ext, numbers: XLSX_ZAHL });
+		var wb2 = X.read(buf, { type: TYPE, PRN: true });
+		var csv = X.utils.sheet_to_csv(wb2.Sheets.Sheet1).split(/[\r\n]+/);
+		assert.equal(csv.length, 3);
+		assert.equal(csv[0], "Inf+,#DIV/0!");
+		assert.equal(csv[1], "Inf-,#DIV/0!");
+		assert.equal(csv[2], "NaN,#NUM!");
+		assert.equal(wb2.Sheets.Sheet1.B1.t, "e");
+		assert.equal(wb2.Sheets.Sheet1.B2.t, "e");
+		assert.equal(wb2.Sheets.Sheet1.B3.t, "e");
+		assert.equal(wb2.Sheets.Sheet1.B1.v, 0x07);
+		assert.equal(wb2.Sheets.Sheet1.B2.v, 0x07);
+		assert.equal(wb2.Sheets.Sheet1.B3.v, 0x24);
+	}); });
 });
 
 //function password_file(x){return x.match(/^password.*\.xls$/); }
@@ -2176,7 +2213,7 @@ function plaintext_test(wb, raw) {
 	var sheet = wb.Sheets[wb.SheetNames[0]];
 	plaintext_val.forEach(function(x) {
 		var cell = get_cell(sheet, x[0]);
-		var tcval = x[2+(raw ? 1 : 0)];
+		var tcval = x[2+(!!raw ? 1 : 0)];
 		var type = raw ? 's' : x[1];
 		if(x.length == 1) { if(cell) { assert.equal(cell.t, 'z'); assert.ok(!cell.v); } return; }
 		assert.equal(cell.v, tcval); assert.equal(cell.t, type);
@@ -2535,6 +2572,8 @@ function get_dom_element(html) {
 		domelt.innerHTML = html;
 		if(document.body) document.body.appendChild(domelt);
 		inserted_dom_elements.push(domelt);
+		var elts = domelt.getElementsByTagName("TABLE");
+		if(elts && elts[0]) return elts[0];
 		return domelt.children[0];
 	}
 	if(!JSDOM) throw new Error("Browser test fail");
@@ -2668,6 +2707,30 @@ describe('HTML', function() {
 			assert.equal(range.e.c, expectedCellCount - 1);
 		});
 	});
+	if(domtest) it('should handle numeric NaN and Infinity', function() {
+		var ws = {
+			"!data": [
+				[ { t: "s", v: "Inf+" }, { t: "n", v: Infinity } ],
+				[ { t: "s", v: "Inf-" }, { t: "n", v: -Infinity } ],
+				[ { t: "s", v: "NaN" },  { t: "n", v: NaN } ],
+			],
+			"!ref": "A1:B3"
+		};
+		var wb = X.utils.book_new(ws, "Sheet1");
+		var str = X.write(wb, { type: "string", bookType: "html" });
+		var wb2 = X.utils.table_to_book(get_dom_element(str));
+		var csv = X.utils.sheet_to_csv(wb2.Sheets.Sheet1).split(/[\r\n]+/);
+		assert.equal(csv.length, 3);
+		assert.equal(csv[0], "Inf+,#DIV/0!");
+		assert.equal(csv[1], "Inf-,#DIV/0!");
+		assert.equal(csv[2], "NaN,#NUM!");
+		assert.equal(wb2.Sheets.Sheet1.B1.t, "e");
+		assert.equal(wb2.Sheets.Sheet1.B2.t, "e");
+		assert.equal(wb2.Sheets.Sheet1.B3.t, "e");
+		assert.equal(wb2.Sheets.Sheet1.B1.v, 0x07);
+		assert.equal(wb2.Sheets.Sheet1.B2.v, 0x07);
+		assert.equal(wb2.Sheets.Sheet1.B3.v, 0x24);
+	});
 });
 
 describe('js -> file -> js', function() {
@@ -2792,7 +2855,29 @@ describe('dense mode', function() {
 		assert.equal(get_cell(newwb.Sheets["Sheet1"], "A1").v, "SheetJS");
 		assert.equal(get_cell(newwb.Sheets["Sheet1"], "A2").v, 5433795);
 	}); });
-;});
+	it('sheet_to_formulae', function() {
+		var w = ['xlsx', paths.fstxlsx];
+		var wb1 = X.read(fs.readFileSync(w[1]), {type:TYPE, cellFormula:true, WTF:true, dense: false});
+		var wb2 = X.read(fs.readFileSync(w[1]), {type:TYPE, cellFormula:true, WTF:true, dense: true});
+		wb1.SheetNames.forEach(function(n) {
+			assert.equal(
+				X.utils.sheet_to_formulae(wb1.Sheets[n]).sort().join("\n"),
+				X.utils.sheet_to_formulae(wb2.Sheets[n]).sort().join("\n")
+			);
+		});
+	});
+	it('sheet_to_csv', function() {
+		var w = ['xlsx', paths.fstxlsx];
+		var wb1 = X.read(fs.readFileSync(w[1]), {type:TYPE, cellFormula:true, WTF:true, dense: false});
+		var wb2 = X.read(fs.readFileSync(w[1]), {type:TYPE, cellFormula:true, WTF:true, dense: true});
+		wb1.SheetNames.forEach(function(n) {
+			assert.equal(
+				X.utils.sheet_to_csv(wb1.Sheets[n]),
+				X.utils.sheet_to_csv(wb2.Sheets[n])
+			);
+		});
+	});
+});
 
 describe('corner cases', function() {
 	it('output functions', function() {

types/index.d.ts

@@ -24,12 +24,12 @@ export function readFile(filename: string, opts?: ParsingOptions): WorkBook;
 /** Attempts to parse data */
 export function read(data: any, opts?: ParsingOptions): WorkBook;
 /** Attempts to write or download workbook data to file */
-export function writeFile(data: WorkBook, filename: string, opts?: WritingOptions): any;
+export function writeFile(data: WorkBook, filename: string, opts?: WritingOptions): void;
 /** Attempts to write or download workbook data to XLSX file */
-export function writeFileXLSX(data: WorkBook, filename: string, opts?: WritingOptions): any;
+export function writeFileXLSX(data: WorkBook, filename: string, opts?: WritingOptions): void;
 /** Attempts to write or download workbook data to file asynchronously */
 type CBFunc = () => void;
-export function writeFileAsync(filename: string, data: WorkBook, opts: WritingOptions | CBFunc, cb?: CBFunc): any;
+export function writeFileAsync(filename: string, data: WorkBook, opts: WritingOptions | CBFunc, cb?: CBFunc): void;
 /** Attempts to write the workbook data */
 export function write(data: WorkBook, opts: WritingOptions): any;
 /** Attempts to write the workbook data as XLSX */
@@ -277,7 +277,7 @@ export interface WritingOptions extends CommonOptions {
      */
     compression?: boolean;
 
-    /** Overwride theme XML when exporting to XLSX/XLSM/XLSB */
+    /** Override theme XML when exporting to XLSX/XLSM/XLSB */
     themeXLSX?: string;
 
     /**
@@ -317,6 +317,9 @@ export interface WritingOptions extends CommonOptions {
 
     /** Record Separator ("row separator") for CSV / Text output */
     RS?: string;
+
+    /** Skip certain validity checks (NOTE: generated files may not open in Excel) */
+    unsafe?: boolean;
 }
 
 /** Workbook Object */
@@ -575,14 +578,14 @@ export interface Sheet {
      * Dense-mode  store cells in the '!data' key
      * Special keys start with '!'
      */
-    [cell: string]: CellObject | CellObject[][] | SheetKeys | any;
+    [cell: string]: CellObject | DenseSheetData | SheetKeys | any;
 
     /**
      * Dense-mode worksheets store data in an array of arrays
      *
      * Cells are accessed with sheet['!data'][R][C] (where R and C are 0-indexed)
      */
-    '!data'?: CellObject[][];
+    '!data'?: DenseSheetData;
 
     /** Sheet type */
     '!type'?: SheetType;
@@ -599,15 +602,16 @@ export interface DenseSheet extends Sheet {
      * Special keys start with '!'
      * Dense-mode worksheets store data in the '!data' key
      */
-    [cell: string]: CellObject[][] | SheetKeys | any;
+    [cell: string]: DenseSheetData | SheetKeys | any;
 
     /**
      * Dense-mode worksheets store data in an array of arrays
      *
      * Cells are accessed with sheet['!data'][R][C] (where R and C are 0-indexed)
      */
-    '!data': CellObject[][];
+    '!data': DenseSheetData;
 }
+export type DenseSheetData = ((CellObject|undefined)[]|undefined)[];
 /** General object representing a sparse Sheet (worksheet or chartsheet) */
 export interface SparseSheet extends Sheet {
     /**
@@ -650,14 +654,7 @@ export interface WorkSheet extends Sheet {
     '!autofilter'?: AutoFilterInfo;
 }
 /** Dense Worksheet Object */
-export interface DenseWorkSheet extends DenseSheet {
-    /**
-     * Dense-mode worksheets store data in an array of arrays
-     *
-     * Cells are accessed with sheet['!data'][R][C] (where R and C are 0-indexed)
-     */
-    '!data': CellObject[][];
-}
+export interface DenseWorkSheet extends DenseSheet {}
 
 /**
  * Worksheet Object with CellObject type
@@ -836,6 +833,14 @@ export interface Sheet2JSONOpts extends DateNFOption {
     UTC?: boolean;
 }
 
+export interface Sheet2FormulaOpts {
+    /**
+     * If false, only export cells with formulae.
+     * By default, synthetic formulae are generated for each cell.
+     */
+    values?: boolean;
+}
+
 export interface UTCDateOption {
     /**
      * If true, dates are interpreted using the UTC methods
@@ -934,7 +939,7 @@ export interface XLSX$Utils {
     sheet_to_html(worksheet: WorkSheet, options?: Sheet2HTMLOpts): string;
 
     /** Generates a list of the formulae (with value fallbacks) */
-    sheet_to_formulae(worksheet: WorkSheet): string[];
+    sheet_to_formulae(worksheet: WorkSheet, options?: Sheet2FormulaOpts): string[];
 
     /* --- Cell Address Utilities --- */
 
@@ -1020,14 +1025,38 @@ export interface XLSX$Consts {
     SHEET_VERYHIDDEN: 2;
 }
 
-/** NODE ONLY! these return Readable Streams */
+export interface StrideOption {
+    /** Number of rows to write per step */
+    stride?: number;
+}
+
+export interface XLMLStreamOpts extends WritingOptions, StrideOption {}
+
+/**
+ * Streaming write methods
+ *
+ * These methods are directly compatible with NodeJS `stream.Readable` API
+ *
+ * Web Streams (modern browsers) can play nice with NodeJS streams. See the Web
+ * Demo at https://docs.sheetjs.com/docs/demos/bigdata/worker#streaming-write
+ *
+ * NOTE: These methods are not included in the `xlsx.mini.min.js` build!
+ */
 export interface StreamUtils {
+    /** Set `Readable` (for environments that do not support NodeJS Streams) */
+    set_readable(Readable: any): void;
+
+    /* --- Worksheet writers --- */
+
     /** CSV output stream, generate one line at a time */
     to_csv(sheet: WorkSheet, opts?: Sheet2CSVOpts): any;
     /** HTML output stream, generate one line at a time */
     to_html(sheet: WorkSheet, opts?: Sheet2HTMLOpts): any;
     /** JSON object stream, generate one row at a time */
     to_json(sheet: WorkSheet, opts?: Sheet2JSONOpts): any;
-    /** Set `Readable` (internal) */
-    set_readable(Readable: any): void;
+
+    /* --- Workbook writers --- */
+
+    /** XLML output string stream (bookType `xlml`) */
+    to_xlml(data: WorkBook, opts?: XLMLStreamOpts): any;
 }