diff --git a/README.md b/README.md
index 2cf9eb6..f02111e 100644
--- a/README.md
+++ b/README.md
@@ -41,7 +41,6 @@ enhancements, additional features by request, and dedicated support.
 [![Build Status](https://travis-ci.org/SheetJS/js-xlsx.svg?branch=master)](https://travis-ci.org/SheetJS/js-xlsx)
 [![Build Status](https://semaphoreci.com/api/v1/sheetjs/js-xlsx/branches/master/shields_badge.svg)](https://semaphoreci.com/sheetjs/js-xlsx)
 [![Coverage Status](http://img.shields.io/coveralls/SheetJS/js-xlsx/master.svg)](https://coveralls.io/r/SheetJS/js-xlsx?branch=master)
-[![FOSSA Status](https://app.fossa.io/api/projects/git%2Bhttps%3A%2F%2Fgithub.com%2FSheetJS%2Fjs-xlsx.svg?type=shield)](https://app.fossa.io/projects/git%2Bhttps%3A%2F%2Fgithub.com%2FSheetJS%2Fjs-xlsx?ref=badge_shield)
 [![Dependencies Status](https://david-dm.org/sheetjs/js-xlsx/status.svg)](https://david-dm.org/sheetjs/js-xlsx)
 [![NPM Downloads](https://img.shields.io/npm/dt/xlsx.svg)](https://npmjs.org/package/xlsx)
 [![ghit.me](https://ghit.me/badge.svg?repo=sheetjs/js-xlsx)](https://ghit.me/repo/sheetjs/js-xlsx)
@@ -171,6 +170,7 @@ The `demos` directory includes sample projects for:
 - [`angular 1.x`](demos/angular/)
 - [`angular 2.x / 4.x`](demos/angular2/)
 - [`browserify`](demos/browserify/)
+- [`canvas-datagrid`](demos/datagrid/)
 - [`Adobe ExtendScript`](demos/extendscript/)
 - [`meteor`](demos/meteor/)
 - [`phantomjs`](demos/phantomjs/)
@@ -1639,6 +1639,15 @@ as strings.
 
 `XLSX.utils.table_to_book` produces a minimal workbook based on the worksheet.
 
+Both functions accept options arguments:
+
+| Option Name |  Default | Description                                         |
+| :---------- | :------: | :-------------------------------------------------- |
+| dateNF      |  fmt 14  | Use specified date format in string output          |
+| cellDates   |  false   | Store dates as type `d` (default is `n`)            |
+| raw         |          | If true, every cell will hold raw strings           |
+
+
 <details>
 	<summary><b>Examples</b> (click to show)</summary>
 
diff --git a/bits/18_cfb.js b/bits/18_cfb.js
index 22ba520..6eb3fe1 100644
--- a/bits/18_cfb.js
+++ b/bits/18_cfb.js
@@ -35,7 +35,7 @@ type CFBFiles = {[n:string]:CFBEntry};
 /* [MS-CFB] v20130118 */
 var CFB = (function _CFB(){
 var exports/*:CFBModule*/ = /*::(*/{}/*:: :any)*/;
-exports.version = '0.12.0';
+exports.version = '0.12.1';
 function parse(file/*:RawBytes*/, options/*:CFBReadOpts*/)/*:CFBContainer*/ {
 var mver = 3; // major version
 var ssz = 512; // sector size
@@ -206,7 +206,7 @@ function build_full_paths(FI/*:CFBFileIndex*/, FPD/*:CFBFullPathDir*/, FP/*:Arra
 		if(FI[i].type === 0 /* unknown */) continue;
 		j = dad[i];
 		if(j === 0) FP[i] = FP[0] + "/" + FP[i];
-		else while(j !== 0) {
+		else while(j !== 0 && j !== dad[j]) {
 			FP[i] = FP[j] + "/" + FP[i];
 			j = dad[j];
 		}
@@ -307,7 +307,6 @@ function read_directory(dir_start/*:number*/, sector_list/*:SectorList*/, sector
 		var blob/*:CFBlob*/ = /*::(*/sector.slice(i, i+128)/*:: :any)*/;
 		prep_blob(blob, 64);
 		namelen = blob.read_shift(2);
-		if(namelen === 0) continue;
 		name = __utf16le(blob,0,namelen-pl);
 		Paths.push(name);
 		var o/*:CFBEntry*/ = ({
@@ -328,6 +327,7 @@ function read_directory(dir_start/*:number*/, sector_list/*:SectorList*/, sector
 		if(mtime !== 0) o.mt = read_date(blob, blob.l-8);
 		o.start = blob.read_shift(4, 'i');
 		o.size = blob.read_shift(4, 'i');
+		if(o.size < 0 && o.start < 0) { o.size = o.type = 0; o.start = ENDOFCHAIN; o.name = ""; }
 		if(o.type === 5) { /* root */
 			minifat_store = o.start;
 			if(nmfs > 0 && minifat_store !== ENDOFCHAIN) sector_list[minifat_store].name = "!StreamData";
@@ -340,7 +340,7 @@ function read_directory(dir_start/*:number*/, sector_list/*:SectorList*/, sector
 			prep_blob(o.content, 0);
 		} else {
 			o.storage = 'minifat';
-			if(minifat_store !== ENDOFCHAIN && o.start !== ENDOFCHAIN) {
+			if(minifat_store !== ENDOFCHAIN && o.start !== ENDOFCHAIN && sector_list[minifat_store]) {
 				o.content = (sector_list[minifat_store].data.slice(o.start*MSSZ,o.start*MSSZ+o.size)/*:any*/);
 				prep_blob(o.content, 0);
 			}
@@ -369,6 +369,9 @@ function readSync(blob/*:RawBytes|string*/, options/*:CFBReadOpts*/) {
 	return parse(/*::typeof blob == 'string' ? new Buffer(blob, 'utf-8') : */blob, options);
 }
 
+function find(cfb/*:CFBContainer*/, path/*:string*/)/*:?CFBEntry*/ {
+	return cfb.find(path);
+}
 /** CFB Constants */
 var MSSZ = 64; /* Mini Sector Size = 1<<6 */
 //var MSCSZ = 4096; /* Mini Stream Cutoff Size */
@@ -394,6 +397,7 @@ var consts = {
 	EntryTypes: ['unknown','storage','stream','lockbytes','property','root']
 };
 
+exports.find = find;
 exports.read = readSync;
 exports.parse = parse;
 exports.utils = {
diff --git a/bits/20_jsutils.js b/bits/20_jsutils.js
index aa406d9..ec03ac4 100644
--- a/bits/20_jsutils.js
+++ b/bits/20_jsutils.js
@@ -114,6 +114,13 @@ function dup(o/*:any*/)/*:any*/ {
 function fill(c/*:string*/,l/*:number*/)/*:string*/ { var o = ""; while(o.length < l) o+=c; return o; }
 
 /* TODO: stress test */
+function fuzzynum(s/*:string*/)/*:number*/ {
+	var v/*:number*/ = Number(s);
+	if(!isNaN(v)) return v;
+	var ss = s.replace(/([\d]),([\d])/g,"$1$2").replace(/[$]/g,"");
+	if(!isNaN(v = Number(ss))) return v;
+	return v;
+}
 function fuzzydate(s/*:string*/)/*:Date*/ {
 	var o = new Date(s), n = new Date(NaN);
 	var y = o.getYear(), m = o.getMonth(), d = o.getDate();
diff --git a/bits/40_harb.js b/bits/40_harb.js
index 1aeb816..01e83aa 100644
--- a/bits/40_harb.js
+++ b/bits/40_harb.js
@@ -234,8 +234,8 @@ var SYLK = (function() {
 					if(val.charAt(0) === '"') val = val.substr(1,val.length - 2);
 					else if(val === 'TRUE') val = true;
 					else if(val === 'FALSE') val = false;
-					else if(+val === +val) {
-						val = +val;
+					else if(!isNaN(fuzzynum(val))) {
+						val = fuzzynum(val);
 						if(next_cell_format !== null && SSF.is_date(next_cell_format)) val = numdate(val);
 					} else if(!isNaN(fuzzydate(val).getDate())) {
 						val = parseDate(val);
@@ -396,7 +396,7 @@ var DIF = (function() {
 				case 0:
 					if(data === 'TRUE') arr[R][C] = true;
 					else if(data === 'FALSE') arr[R][C] = false;
-					else if(+value == +value) arr[R][C] = +value;
+					else if(!isNaN(fuzzynum(value))) arr[R][C] = fuzzynum(value);
 					else if(!isNaN(fuzzydate(value).getDate())) arr[R][C] = parseDate(value);
 					else arr[R][C] = value;
 					++C; break;
@@ -482,7 +482,7 @@ var PRN = (function() {
 		else if(data === 'TRUE') arr[R][C] = true;
 		else if(data === 'FALSE') arr[R][C] = false;
 		else if(data === ""){/* empty */}
-		else if(+data == +data) arr[R][C] = +data;
+		else if(!isNaN(fuzzynum(data))) arr[R][C] = fuzzynum(data);
 		else if(!isNaN(fuzzydate(data).getDate())) arr[R][C] = parseDate(data);
 		else arr[R][C] = data;
 	}
@@ -533,7 +533,7 @@ var PRN = (function() {
 			else if(s.charCodeAt(0) == 0x3D) { cell.t = 'n'; cell.f = s.substr(1); }
 			else if(s == "TRUE") { cell.t = 'b'; cell.v = true; }
 			else if(s == "FALSE") { cell.t = 'b'; cell.v = false; }
-			else if(!isNaN(v = +s)) { cell.t = 'n'; cell.w = s; cell.v = v; }
+			else if(!isNaN(v = fuzzynum(s))) { cell.t = 'n'; cell.w = s; cell.v = v; }
 			else if(!isNaN(fuzzydate(s).getDate()) || _re && s.match(_re)) {
 				cell.z = o.dateNF || SSF._table[14];
 				var k = 0;
diff --git a/bits/76_xls.js b/bits/76_xls.js
index c2592e0..60f26ed 100644
--- a/bits/76_xls.js
+++ b/bits/76_xls.js
@@ -811,11 +811,11 @@ function parse_workbook(blob, options/*:ParseOpts*/)/*:Workbook*/ {
 /* TODO: WTF */
 function parse_props(cfb) {
 	/* [MS-OSHARED] 2.3.3.2.2 Document Summary Information Property Set */
-	var DSI = cfb.find('!DocumentSummaryInformation');
+	var DSI = CFB.find(cfb, '!DocumentSummaryInformation');
 	if(DSI) try { cfb.DocSummary = parse_PropertySetStream(DSI, DocSummaryPIDDSI); } catch(e) {/* empty */}
 
 	/* [MS-OSHARED] 2.3.3.2.1 Summary Information Property Set*/
-	var SI = cfb.find('!SummaryInformation');
+	var SI = CFB.find(cfb, '!SummaryInformation');
 	if(SI) try { cfb.Summary = parse_PropertySetStream(SI, SummaryPIDSI); } catch(e) {/* empty */}
 }
 
@@ -823,27 +823,28 @@ function parse_xlscfb(cfb/*:any*/, options/*:?ParseOpts*/)/*:Workbook*/ {
 if(!options) options = {};
 fix_read_opts(options);
 reset_cp();
-var CompObj, Summary, Workbook/*:?any*/;
+var CompObj, Summary, WB/*:?any*/;
 if(cfb.FullPaths) {
-	CompObj = cfb.find('!CompObj');
-	Summary = cfb.find('!SummaryInformation');
-	Workbook = cfb.find('/Workbook');
+	CompObj = CFB.find(cfb, '!CompObj');
+	Summary = CFB.find(cfb, '!SummaryInformation');
+	WB = CFB.find(cfb, '/Workbook');
 } else {
 	prep_blob(cfb, 0);
-	Workbook = ({content: cfb}/*:any*/);
+	WB = ({content: cfb}/*:any*/);
 }
 
-if(!Workbook) Workbook = cfb.find('/Book');
+if(!WB) WB = CFB.find(cfb, '/Book');
 var CompObjP, SummaryP, WorkbookP/*:Workbook*/;
 
+var _data/*:?any*/;
 if(CompObj) CompObjP = parse_compobj(CompObj);
 if(options.bookProps && !options.bookSheets) WorkbookP = ({}/*:any*/);
 else {
-	if(Workbook) WorkbookP = parse_workbook(Workbook.content, options);
+	if(WB && WB.content) WorkbookP = parse_workbook(WB.content, options);
 	/* Quattro Pro 7-8 */
-	else if(cfb.find('PerfectOffice_MAIN')) WorkbookP = WK_.to_workbook(cfb.find('PerfectOffice_MAIN').content, options);
+	else if((_data=CFB.find(cfb, 'PerfectOffice_MAIN')) && _data.content) WorkbookP = WK_.to_workbook(_data.content, options);
 	/* Quattro Pro 9 */
-	else if(cfb.find('NativeContent_MAIN')) WorkbookP = WK_.to_workbook(cfb.find('NativeContent_MAIN').content, options);
+	else if((_data=CFB.find(cfb, 'NativeContent_MAIN')) && _data.content) WorkbookP = WK_.to_workbook(_data.content, options);
 	else throw new Error("Cannot find Workbook stream");
 }
 
diff --git a/bits/79_html.js b/bits/79_html.js
index b4ad23f..b1de837 100644
--- a/bits/79_html.js
+++ b/bits/79_html.js
@@ -37,12 +37,14 @@ var HTML_ = (function() {
 				if(range.e.c < C) range.e.c = C;
 				if(opts.dense) {
 					if(!ws[R]) ws[R] = [];
-					if(Number(m) == Number(m)) ws[R][C] = {t:'n', v:+m};
+					if(opts.raw) ws[R][C] = {t:'s', v:m};
+					else if(!isNaN(fuzzynum(m))) ws[R][C] = {t:'n', v:fuzzynum(m)};
 					else ws[R][C] = {t:'s', v:m};
 				} else {
 					var coord/*:string*/ = encode_cell({r:R, c:C});
 					/* TODO: value parsing */
-					if(Number(m) == Number(m)) ws[coord] = {t:'n', v:+m};
+					if(opts.raw) ws[coord] = {t:'s', v:m};
+					else if(!isNaN(fuzzynum(m))) ws[coord] = {t:'n', v:fuzzynum(m)};
 					else ws[coord] = {t:'s', v:m};
 				}
 				C += CS;
@@ -134,7 +136,8 @@ function parse_dom_table(table/*:HTMLElement*/, _opts/*:?any*/)/*:Worksheet*/ {
 			if((RS = +elt.getAttribute("rowspan"))>0 || CS>1) merges.push({s:{r:R,c:C},e:{r:R + (RS||1) - 1, c:C + CS - 1}});
 			var o/*:Cell*/ = {t:'s', v:v};
 			if(v != null && v.length) {
-				if(!isNaN(Number(v))) o = {t:'n', v:Number(v)};
+				if(opts.raw) o = {t:'s', v:v};
+				else if(!isNaN(fuzzynum(v))) o = {t:'n', v:fuzzynum(v)};
 				else if(!isNaN(fuzzydate(v).getDate())) {
 					o = ({t:'d', v:parseDate(v)}/*:any*/);
 					if(!opts.cellDates) o = ({t:'n', v:datenum(o.v)}/*:any*/);
diff --git a/bits/85_parsezip.js b/bits/85_parsezip.js
index 935d1d0..c4c711f 100644
--- a/bits/85_parsezip.js
+++ b/bits/85_parsezip.js
@@ -172,20 +172,20 @@ function parse_zip(zip/*:ZIP*/, opts/*:?ParseOpts*/)/*:Workbook*/ {
 /* references to [MS-OFFCRYPTO] */
 function parse_xlsxcfb(cfb, opts/*:?ParseOpts*/)/*:Workbook*/ {
 	var f = 'Version';
-	var data = cfb.find(f);
+	var data = CFB.find(cfb, f);
 	if(!data || !data.content) throw new Error("ECMA-376 Encrypted file missing " + f);
 	var version = parse_DataSpaceVersionInfo(data.content);
 
 	/* 2.3.4.1 */
 	f = 'DataSpaceMap';
-	data = cfb.find(f);
+	data = CFB.find(cfb, f);
 	if(!data || !data.content) throw new Error("ECMA-376 Encrypted file missing " + f);
 	var dsm = parse_DataSpaceMap(data.content);
 	if(dsm.length != 1 || dsm[0].comps.length != 1 || dsm[0].comps[0].t != 0 || dsm[0].name != "StrongEncryptionDataSpace" || dsm[0].comps[0].v != "EncryptedPackage")
 		throw new Error("ECMA-376 Encrypted file bad " + f);
 
 	f = 'StrongEncryptionDataSpace';
-	data = cfb.find(f);
+	data = CFB.find(cfb, f);
 	if(!data || !data.content) throw new Error("ECMA-376 Encrypted file missing " + f);
 	var seds = parse_DataSpaceDefinition(data.content);
 	if(seds.length != 1 || seds[0] != "StrongEncryptionTransform")
@@ -193,12 +193,12 @@ function parse_xlsxcfb(cfb, opts/*:?ParseOpts*/)/*:Workbook*/ {
 
 	/* 2.3.4.3 */
 	f = '!Primary';
-	data = cfb.find(f);
+	data = CFB.find(cfb, f);
 	if(!data || !data.content) throw new Error("ECMA-376 Encrypted file missing " + f);
 	var hdr = parse_Primary(data.content);
 
 	f = 'EncryptionInfo';
-	data = cfb.find(f);
+	data = CFB.find(cfb, f);
 	if(!data || !data.content) throw new Error("ECMA-376 Encrypted file missing " + f);
 	var einfo = parse_EncryptionInfo(data.content);
 
diff --git a/bits/87_read.js b/bits/87_read.js
index 25f9a41..9b31717 100644
--- a/bits/87_read.js
+++ b/bits/87_read.js
@@ -10,8 +10,8 @@ function firstbyte(f/*:RawData*/,o/*:?TypeOpts*/)/*:Array<number>*/ {
 	return [x.charCodeAt(0), x.charCodeAt(1), x.charCodeAt(2), x.charCodeAt(3)];
 }
 
-function read_cfb(cfb, opts/*:?ParseOpts*/)/*:Workbook*/ {
-	if(cfb.find("EncryptedPackage")) return parse_xlsxcfb(cfb, opts);
+function read_cfb(cfb/*:CFBContainer*/, opts/*:?ParseOpts*/)/*:Workbook*/ {
+	if(CFB.find(cfb, "EncryptedPackage")) return parse_xlsxcfb(cfb, opts);
 	return parse_xlscfb(cfb, opts);
 }
 
diff --git a/bits/90_utils.js b/bits/90_utils.js
index bfe6de1..c139401 100644
--- a/bits/90_utils.js
+++ b/bits/90_utils.js
@@ -1,8 +1,8 @@
-function sheet_to_json(sheet/*:Worksheet*/, opts/*:?Sheet2JSONOpts*/){
+function sheet_to_json(sheet/*:Worksheet*/, opts/*:?Sheet2JSONOpts*/) {
 	if(sheet == null || sheet["!ref"] == null) return [];
 	var val = {t:'n',v:0}, header = 0, offset = 1, hdr/*:Array<any>*/ = [], isempty = true, v=0, vv="";
 	var r = {s:{r:0,c:0},e:{r:0,c:0}};
-	var o = opts != null ? opts : {};
+	var o = opts || {};
 	var raw = o.raw;
 	var defval = o.defval;
 	var range = o.range != null ? o.range : sheet["!ref"];
@@ -16,8 +16,8 @@ function sheet_to_json(sheet/*:Worksheet*/, opts/*:?Sheet2JSONOpts*/){
 	}
 	if(header > 0) offset = 0;
 	var rr = encode_row(r.s.r);
-	var cols = new Array(r.e.c-r.s.c+1);
-	var out = new Array(r.e.r-r.s.r-offset+1);
+	var cols/*:Array<string>*/ = [];
+	var out/*:Array<any>*/ = [];
 	var outi = 0, counter = 0;
 	var dense = Array.isArray(sheet);
 	var R = r.s.r, C = 0, CC = 0;
@@ -37,7 +37,7 @@ function sheet_to_json(sheet/*:Worksheet*/, opts/*:?Sheet2JSONOpts*/){
 				hdr[C] = vv;
 		}
 	}
-	var row = (header === 1) ? [] : {};
+	var row/*:any*/ = (header === 1) ? [] : {};
 	for (R = r.s.r + offset; R <= r.e.r; ++R) {
 		rr = encode_row(R);
 		isempty = true;
@@ -81,7 +81,7 @@ 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*/ {
 	var isempty = true;
-	var row = [], txt = "", rr = encode_row(R);
+	var row/*:Array<string>*/ = [], txt = "", rr = encode_row(R);
 	for(var C = r.s.c; C <= r.e.c; ++C) {
 		if (!cols[C]) continue;
 		var val = o.dense ? (sheet[R]||[])[C]: sheet[cols[C] + rr];
diff --git a/demos/datagrid/README.md b/demos/datagrid/README.md
new file mode 100644
index 0000000..71271ad
--- /dev/null
+++ b/demos/datagrid/README.md
@@ -0,0 +1,67 @@
+# canvas-datagrid
+
+The `sheet_to_json` utility function generates output arrays suitable for use
+with other JS libraries such as data grids for previewing data.  After extensive
+testing, [`canvas-datagrid`](https://tonygermaneri.github.io/canvas-datagrid/)
+stood out as a very high-performance grid with an incredibly simple API.
+
+## Obtaining the Library
+
+The [`canvas-datagrid` npm nodule](http://npm.im/canvas-datagrid) includes a
+minified script `dist/canvas-datagrid.js` that can be directly inserted as a
+script tag.  The unpkg CDN also exposes the latest version:
+
+```html
+<script src="https://unpkg.com/canvas-datagrid/dist/canvas-datagrid.js"></script>
+```
+
+## Previewing Data
+
+The HTML document needs a container element:
+
+```html
+<div id="gridctr"></div>
+```
+
+Grid initialization is a one-liner:
+
+```js
+var grid = canvasDatagrid({
+	parentNode: document.getElementById('gridctr'),
+	data: []
+});
+```
+
+Once the workbook is read and the worksheet is selected, assigning the data
+variable automatically updates the view:
+
+```js
+grid.data = XLSX.utils.sheet_to_json(ws, {header:1});
+```
+
+This demo previews the first worksheet, but it is easy to add buttons and other
+features to support multiple worksheets.
+
+## Editing
+
+The library handles the whole edit cycle.  No intervention is necessary.
+
+## Saving Data
+
+`grid.data` is immediately readable and can be converted back to a worksheet:
+
+```js
+/* build worksheet from the grid data */
+var ws = XLSX.utils.aoa_to_sheet(grid.data);
+
+/* build up workbook */
+var wb = XLSX.utils.book_new();
+XLSX.utils.book_append_sheet(wb, ws, 'SheetJS');
+
+/* .. generate download (see documentation for examples) .. */
+```
+
+## Additional Features
+
+This demo barely scratches the surface.  The underlying grid component includes
+many additional features including massive data streaming, sorting and styling.
diff --git a/demos/datagrid/index.html b/demos/datagrid/index.html
new file mode 100644
index 0000000..235c53f
--- /dev/null
+++ b/demos/datagrid/index.html
@@ -0,0 +1,205 @@
+<!DOCTYPE html>
+<!-- xlsx.js (C) 2013-present  SheetJS http://sheetjs.com -->
+<!-- vim: set ts=2: -->
+<html>
+<head>
+<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
+<title>SheetJS + canvas-datagrid Live Demo</title>
+<style>
+#drop{
+	border:2px dashed #bbb;
+	-moz-border-radius:5px;
+	-webkit-border-radius:5px;
+	border-radius:5px;
+	padding:25px;
+	text-align:center;
+	font:20pt bold,"Vollkorn";color:#bbb
+}
+#b64data{
+	width:100%;
+}
+a { text-decoration: none }
+</style>
+</head>
+<body>
+<pre>
+<b><a href="http://sheetjs.com">SheetJS Data Preview Live Demo</a></b>
+
+<a href="https://github.com/TonyGermaneri/canvas-datagrid">canvas-datagrid component library</a>
+
+<a href="https://github.com/SheetJS/js-xlsx">Source Code Repo</a>
+<a href="https://github.com/SheetJS/js-xlsx/issues">Issues?  Something look weird?  Click here and report an issue</a>
+
+<div id="drop">Drop a spreadsheet file here to see sheet data</div>
+<input type="file" name="xlfile" id="xlf" /> ... or click here to select a file
+<textarea id="b64data">... or paste a base64-encoding here</textarea>
+<input type="button" id="dotext" value="Click here to process the base64 text" onclick="b64it();"/><br />
+<b>Advanced Demo Options:</b>
+Use readAsBinaryString: (when available) <input type="checkbox" name="userabs" checked>
+</pre>
+<p><input type="submit" value="Export to XLSX!" id="xport" onclick="doit();" disabled="true"></p>
+<div id="htmlout"></div>
+<br />
+<script src="https://unpkg.com/canvas-datagrid/dist/canvas-datagrid.js"></script>
+<script type="text/javascript" src="https://rawgit.com/eligrey/Blob.js/master/Blob.js"></script>
+<script type="text/javascript" src="https://rawgit.com/eligrey/FileSaver.js/master/FileSaver.js"></script>
+<script src="xlsx.full.min.js"></script>
+<script>
+/*jshint browser:true */
+/* eslint-env browser */
+/* eslint no-use-before-define:0 */
+/*global Uint8Array, Uint16Array, ArrayBuffer */
+/*global XLSX */
+var X = XLSX;
+
+var rABS = typeof FileReader !== "undefined" && typeof FileReader.prototype !== "undefined" && typeof FileReader.prototype.readAsBinaryString !== "undefined";
+if(!rABS) {
+	document.getElementsByName("userabs")[0].disabled = true;
+	document.getElementsByName("userabs")[0].checked = false;
+}
+
+var wtf_mode = false;
+
+function fixdata(data) {
+	var o = "", l = 0, w = 10240;
+	for(; l<data.byteLength/w; ++l) o+=String.fromCharCode.apply(null,new Uint8Array(data.slice(l*w,l*w+w)));
+	o+=String.fromCharCode.apply(null, new Uint8Array(data.slice(l*w)));
+	return o;
+}
+
+function ab2str(data) {
+	var o = "", l = 0, w = 10240;
+	for(; l<data.byteLength/w; ++l) o+=String.fromCharCode.apply(null,new Uint16Array(data.slice(l*w,l*w+w)));
+	o+=String.fromCharCode.apply(null, new Uint16Array(data.slice(l*w)));
+	return o;
+}
+
+function s2ab(s) {
+	var b = new ArrayBuffer(s.length), v = new Uint8Array(b);
+	for (var i=0; i != s.length; ++i) v[i] = s.charCodeAt(i) & 0xFF;
+	return b;
+}
+
+function get_radio_value( radioName ) {
+	var radios = document.getElementsByName( radioName );
+	for( var i = 0; i < radios.length; i++ ) {
+		if( radios[i].checked || radios.length === 1 ) {
+			return radios[i].value;
+		}
+	}
+}
+
+var tarea = document.getElementById('b64data');
+function b64it() {
+	if(typeof console !== 'undefined') console.log("onload", new Date());
+	var wb = X.read(tarea.value, {type: 'base64',WTF:wtf_mode});
+	process_wb(wb);
+}
+window.b64it = b64it;
+
+var global_wb;
+var cDg;
+function process_wb(wb) {
+	global_wb = wb;
+	var ws = wb.Sheets[wb.SheetNames[0]];
+	var data = XLSX.utils.sheet_to_json(ws, {header:1});
+	if(!cDg) cDg = canvasDatagrid({ parentNode:document.getElementById('htmlout'), data:data });
+	else cDg.data = data;
+	document.getElementById('xport').disabled = false;
+	if(typeof console !== 'undefined') console.log("output", new Date());
+}
+function doit() {
+	var new_wb = XLSX.utils.book_new();
+	var new_ws = XLSX.utils.aoa_to_sheet(cDg.data);
+	XLSX.utils.book_append_sheet(new_wb, new_ws, 'SheetJS');
+	var wbout = XLSX.write(new_wb, {bookType:'xlsx', bookSST:true, type:'binary'});
+	var fname = 'sheetjs.xlsx';
+	try {
+		saveAs(new Blob([s2ab(wbout)],{type:"application/octet-stream"}), fname);
+	} catch(e) { if(typeof console != 'undefined') console.log(e, wbout); }
+}
+
+var drop = document.getElementById('drop');
+function handleDrop(e) {
+	e.stopPropagation();
+	e.preventDefault();
+	rABS = document.getElementsByName("userabs")[0].checked;
+	var files = e.dataTransfer.files;
+	var f = files[0];
+	{
+		var reader = new FileReader();
+		//var name = f.name;
+		reader.onload = function(e) {
+			if(typeof console !== 'undefined') console.log("onload", new Date(), rABS);
+			var data = e.target.result;
+			{
+				var wb;
+				if(rABS) {
+					wb = X.read(data, {type: 'binary'});
+				} else {
+					var arr = fixdata(data);
+					wb = X.read(btoa(arr), {type: 'base64'});
+				}
+				process_wb(wb);
+			}
+		};
+		if(rABS) reader.readAsBinaryString(f);
+		else reader.readAsArrayBuffer(f);
+	}
+}
+
+function handleDragover(e) {
+	e.stopPropagation();
+	e.preventDefault();
+	e.dataTransfer.dropEffect = 'copy';
+}
+
+if(drop.addEventListener) {
+	drop.addEventListener('dragenter', handleDragover, false);
+	drop.addEventListener('dragover', handleDragover, false);
+	drop.addEventListener('drop', handleDrop, false);
+}
+
+
+var xlf = document.getElementById('xlf');
+function handleFile(e) {
+	rABS = document.getElementsByName("userabs")[0].checked;
+	var files = e.target.files;
+	var f = files[0];
+	{
+		var reader = new FileReader();
+		//var name = f.name;
+		reader.onload = function(e) {
+			if(typeof console !== 'undefined') console.log("onload", new Date(), rABS);
+			var data = e.target.result;
+			{
+				var wb;
+				if(rABS) {
+					wb = X.read(data, {type: 'binary'});
+				} else {
+					var arr = fixdata(data);
+					wb = X.read(btoa(arr), {type: 'base64'});
+				}
+				process_wb(wb);
+			}
+		};
+		if(rABS) reader.readAsBinaryString(f);
+		else reader.readAsArrayBuffer(f);
+	}
+}
+
+if(xlf.addEventListener) xlf.addEventListener('change', handleFile, false);
+</script>
+<script type="text/javascript">
+	var _gaq = _gaq || [];
+	_gaq.push(['_setAccount', 'UA-36810333-1']);
+	_gaq.push(['_trackPageview']);
+
+	(function() {
+		var ga = document.createElement('script'); ga.type = 'text/javascript'; ga.async = true;
+		ga.src = ('https:' == document.location.protocol ? 'https://ssl' : 'http://www') + '.google-analytics.com/ga.js';
+		var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(ga, s);
+	})();
+</script>
+</body>
+</html>
diff --git a/demos/datagrid/xlsx.full.min.js b/demos/datagrid/xlsx.full.min.js
new file mode 120000
index 0000000..dbca48d
--- /dev/null
+++ b/demos/datagrid/xlsx.full.min.js
@@ -0,0 +1 @@
+../../dist/xlsx.full.min.js
\ No newline at end of file
diff --git a/docbits/00_intro.md b/docbits/00_intro.md
index e319870..e23ccb2 100644
--- a/docbits/00_intro.md
+++ b/docbits/00_intro.md
@@ -41,7 +41,6 @@ enhancements, additional features by request, and dedicated support.
 [![Build Status](https://travis-ci.org/SheetJS/js-xlsx.svg?branch=master)](https://travis-ci.org/SheetJS/js-xlsx)
 [![Build Status](https://semaphoreci.com/api/v1/sheetjs/js-xlsx/branches/master/shields_badge.svg)](https://semaphoreci.com/sheetjs/js-xlsx)
 [![Coverage Status](http://img.shields.io/coveralls/SheetJS/js-xlsx/master.svg)](https://coveralls.io/r/SheetJS/js-xlsx?branch=master)
-[![FOSSA Status](https://app.fossa.io/api/projects/git%2Bhttps%3A%2F%2Fgithub.com%2FSheetJS%2Fjs-xlsx.svg?type=shield)](https://app.fossa.io/projects/git%2Bhttps%3A%2F%2Fgithub.com%2FSheetJS%2Fjs-xlsx?ref=badge_shield)
 [![Dependencies Status](https://david-dm.org/sheetjs/js-xlsx/status.svg)](https://david-dm.org/sheetjs/js-xlsx)
 [![NPM Downloads](https://img.shields.io/npm/dt/xlsx.svg)](https://npmjs.org/package/xlsx)
 [![ghit.me](https://ghit.me/badge.svg?repo=sheetjs/js-xlsx)](https://ghit.me/repo/sheetjs/js-xlsx)
diff --git a/docbits/10_install.md b/docbits/10_install.md
index ce71229..a0142ee 100644
--- a/docbits/10_install.md
+++ b/docbits/10_install.md
@@ -28,6 +28,7 @@ The `demos` directory includes sample projects for:
 - [`angular 1.x`](demos/angular/)
 - [`angular 2.x / 4.x`](demos/angular2/)
 - [`browserify`](demos/browserify/)
+- [`canvas-datagrid`](demos/datagrid/)
 - [`Adobe ExtendScript`](demos/extendscript/)
 - [`meteor`](demos/meteor/)
 - [`phantomjs`](demos/phantomjs/)
diff --git a/docbits/82_util.md b/docbits/82_util.md
index 83f9a85..f1f2fc2 100644
--- a/docbits/82_util.md
+++ b/docbits/82_util.md
@@ -77,6 +77,15 @@ as strings.
 
 `XLSX.utils.table_to_book` produces a minimal workbook based on the worksheet.
 
+Both functions accept options arguments:
+
+| Option Name |  Default | Description                                         |
+| :---------- | :------: | :-------------------------------------------------- |
+| dateNF      |  fmt 14  | Use specified date format in string output          |
+| cellDates   |  false   | Store dates as type `d` (default is `n`)            |
+| raw         |          | If true, every cell will hold raw strings           |
+
+
 <details>
 	<summary><b>Examples</b> (click to show)</summary>
 
diff --git a/misc/docs/README.md b/misc/docs/README.md
index a49c1c5..2ca569c 100644
--- a/misc/docs/README.md
+++ b/misc/docs/README.md
@@ -38,7 +38,6 @@ enhancements, additional features by request, and dedicated support.
 [![Build Status](https://travis-ci.org/SheetJS/js-xlsx.svg?branch=master)](https://travis-ci.org/SheetJS/js-xlsx)
 [![Build Status](https://semaphoreci.com/api/v1/sheetjs/js-xlsx/branches/master/shields_badge.svg)](https://semaphoreci.com/sheetjs/js-xlsx)
 [![Coverage Status](http://img.shields.io/coveralls/SheetJS/js-xlsx/master.svg)](https://coveralls.io/r/SheetJS/js-xlsx?branch=master)
-[![FOSSA Status](https://app.fossa.io/api/projects/git%2Bhttps%3A%2F%2Fgithub.com%2FSheetJS%2Fjs-xlsx.svg?type=shield)](https://app.fossa.io/projects/git%2Bhttps%3A%2F%2Fgithub.com%2FSheetJS%2Fjs-xlsx?ref=badge_shield)
 [![Dependencies Status](https://david-dm.org/sheetjs/js-xlsx/status.svg)](https://david-dm.org/sheetjs/js-xlsx)
 [![NPM Downloads](https://img.shields.io/npm/dt/xlsx.svg)](https://npmjs.org/package/xlsx)
 [![ghit.me](https://ghit.me/badge.svg?repo=sheetjs/js-xlsx)](https://ghit.me/repo/sheetjs/js-xlsx)
@@ -165,6 +164,7 @@ The `demos` directory includes sample projects for:
 - [`angular 1.x`](demos/angular/)
 - [`angular 2.x / 4.x`](demos/angular2/)
 - [`browserify`](demos/browserify/)
+- [`canvas-datagrid`](demos/datagrid/)
 - [`Adobe ExtendScript`](demos/extendscript/)
 - [`meteor`](demos/meteor/)
 - [`phantomjs`](demos/phantomjs/)
@@ -1516,6 +1516,15 @@ as strings.
 
 `XLSX.utils.table_to_book` produces a minimal workbook based on the worksheet.
 
+Both functions accept options arguments:
+
+| Option Name |  Default | Description                                         |
+| :---------- | :------: | :-------------------------------------------------- |
+| dateNF      |  fmt 14  | Use specified date format in string output          |
+| cellDates   |  false   | Store dates as type `d` (default is `n`)            |
+| raw         |          | If true, every cell will hold raw strings           |
+
+
 
 To generate the example sheet, start with the HTML table:
 
diff --git a/misc/flowdeps.js b/misc/flowdeps.js
index 2f60f3d..5a8778e 100644
--- a/misc/flowdeps.js
+++ b/misc/flowdeps.js
@@ -45,6 +45,7 @@ type SSFModule = {
 
 type CFBModule = {
 	version:string;
+	find:(cfb:CFBContainer, path:string)=>?CFBEntry;
 	read:(blob:RawBytes|string, opts:CFBReadOpts)=>CFBContainer;
 	parse:(file:RawBytes, opts:CFBReadOpts)=>CFBContainer;
 	utils:CFBUtils;
diff --git a/package.json b/package.json
index 56d8523..94d5542 100644
--- a/package.json
+++ b/package.json
@@ -20,7 +20,7 @@
 		"exit-on-epipe":"~1.0.1",
 		"ssf":"~0.10.1",
 		"codepage":"~1.11.0",
-		"cfb":"~0.12.0",
+		"cfb":"~0.12.1",
 		"crc-32":"~1.1.0",
 		"adler-32":"~1.1.0",
 		"commander":"~2.11.0"
diff --git a/test.js b/test.js
index c101daa..0ae8f41 100644
--- a/test.js
+++ b/test.js
@@ -1845,6 +1845,32 @@ describe('csv', function() {
 	});
 });
 
+describe('HTML', function() {
+	describe('input', function(){
+		var b = "<table><tr><td>1</td><td>4,001</td></tr><tr><td>$41.08</td></tr></table>";
+		it('should generate numbers by default', function() {
+			var sheet = X.read(b, {type:"binary"}).Sheets.Sheet1
+			var cell = get_cell(sheet, "A1");
+			assert.equal(cell.v, 1);
+			assert.equal(cell.t, 'n');
+			cell = get_cell(sheet, "B1");
+			assert.equal(cell.v, 4001);
+			cell = get_cell(sheet, "A2");
+			assert.equal(cell.v, 41.08);
+		});
+		it('should generate strings if raw option is passed', function() {
+			var sheet = X.read(b, {type:"binary", raw:true}).Sheets.Sheet1
+			var cell = get_cell(sheet, "A1");
+			assert.equal(cell.v, "1");
+			assert.equal(cell.t, 's');
+			cell = get_cell(sheet, "B1");
+			assert.equal(cell.v, "4,001");
+			cell = get_cell(sheet, "A2");
+			assert.equal(cell.v, "$41.08");
+		});
+	});
+});
+
 describe('js -> file -> js', function() {
 	var data, ws, wb, BIN="binary";
 	var bef = (function() {
diff --git a/types/doc.ts b/types/doc.ts
new file mode 100644
index 0000000..edc40e9
--- /dev/null
+++ b/types/doc.ts
@@ -0,0 +1,111 @@
+import * as XLSX from 'xlsx';
+import * as fs from 'fs';
+
+const version: string = XLSX.version;
+
+const SSF = XLSX.SSF;
+
+let read_opts: XLSX.ParsingOptions = {
+	type: "buffer",
+	raw: false,
+	cellFormula: false,
+	cellHTML: false,
+	cellNF: false,
+	cellStyles: false,
+	cellText: false,
+	cellDates: false,
+	dateNF: "yyyy-mm-dd",
+	sheetStubs: false,
+	sheetRows: 3,
+	bookDeps: false,
+	bookFiles: false,
+	bookProps: false,
+	bookSheets: false,
+	bookVBA: false,
+	password: "",
+	WTF: false
+};
+
+let write_opts: XLSX.WritingOptions = {
+	type: "buffer",
+	cellDates: false,
+	bookSST: false,
+	bookType: "xlsx",
+	sheet: "Sheet1",
+	compression: false,
+	Props: {
+		Author: "Someone",
+		Company: "SheetJS LLC"
+	}
+};
+
+const wb1 = XLSX.readFile("sheetjs.xls", read_opts);
+XLSX.writeFile(wb1, "sheetjs.new.xlsx", write_opts);
+
+read_opts.type = "binary";
+const wb2 = XLSX.read("1,2,3\n4,5,6", read_opts);
+write_opts.type = "binary";
+const out2 = XLSX.write(wb2, write_opts);
+
+read_opts.type = "buffer";
+const wb3 = XLSX.read(fs.readFileSync("sheetjs.xlsx"), read_opts);
+write_opts.type = "base64";
+const out3 = XLSX.write(wb3, write_opts);
+
+const ws1 = XLSX.utils.aoa_to_sheet([
+    "SheetJS".split(""),
+    [1,2,3,4,5,6,7],
+    [2,3,4,5,6,7,8]
+], {
+	dateNF: "yyyy-mm-dd",
+	cellDates: true,
+	sheetStubs: false
+});
+
+const ws2 = XLSX.utils.json_to_sheet([
+    {S:1,h:2,e:3,e_1:4,t:5,J:6,S_1:7},
+    {S:2,h:3,e:4,e_1:5,t:6,J:7,S_1:8}
+], {
+	header:["S","h","e","e_1","t","J","S_1"],
+	cellDates: true,
+	dateNF: "yyyy-mm-dd"
+});
+
+const tbl = {}; /* document.getElementById('table'); */
+const ws3 = XLSX.utils.table_to_sheet(tbl, {
+	raw: true,
+	cellDates: true,
+	dateNF: "yyyy-mm-dd"
+});
+
+const obj1 = XLSX.utils.sheet_to_formulae(ws1);
+
+const str1: string = XLSX.utils.sheet_to_csv(ws2, {
+	FS: "\t",
+	RS: "|",
+	dateNF: "yyyy-mm-dd",
+	strip: true,
+	blankrows: true,
+	skipHidden: true
+});
+
+const html1: string = XLSX.utils.sheet_to_html(ws3, {
+	editable: false
+});
+
+const arr1: object[] = XLSX.utils.sheet_to_json(ws1, {
+	raw: true,
+	range: 1,
+	header: "A",
+	dateNF: "yyyy-mm-dd",
+	defval: 0,
+	blankrows: true
+});
+
+const arr2: any[][] = XLSX.utils.sheet_to_json<any[][]>(ws2, {
+	header: 1
+});
+
+const arr3: any[] = XLSX.utils.sheet_to_json(ws3, {
+	header: ["Sheet", "JS", "Rocks"]
+});
diff --git a/types/index.d.ts b/types/index.d.ts
index db3830c..b5c8c3c 100644
--- a/types/index.d.ts
+++ b/types/index.d.ts
@@ -83,6 +83,11 @@ export interface CommonOptions {
     cellDates?: boolean;
 }
 
+export interface DateNFOption {
+    /** Use specified date format */
+    dateNF?: NumberFormat;
+}
+
 /** Options for read and readFile */
 export interface ParsingOptions extends CommonOptions {
     /** Input data encoding */
@@ -168,6 +173,9 @@ export interface ParsingOptions extends CommonOptions {
      * @default ''
      */
     password?: string;
+
+    /* If true, plaintext parsing will not parse values */
+    raw?: boolean;
 }
 
 /** Options for write and writeFile */
@@ -541,16 +549,13 @@ export interface Range {
     e: CellAddress;
 }
 
-export interface Sheet2CSVOpts {
+export interface Sheet2CSVOpts extends DateNFOption {
     /** Field Separator ("delimiter") */
     FS?: string;
 
     /** Record Separator ("row separator") */
     RS?: string;
 
-    /** Use specified date format */
-    dateNF?: NumberFormat;
-
     /** Remove trailing field separators in each record */
     strip?: boolean;
 
@@ -572,10 +577,7 @@ export interface Sheet2HTMLOpts {
     footer?: string;
 }
 
-export interface Sheet2JSONOpts {
-    /** Use specified format for date cells */
-    dateNF?: NumberFormat;
-
+export interface Sheet2JSONOpts extends DateNFOption {
     /** Output format */
     header?: "A"|number|string[];
 
@@ -592,16 +594,7 @@ export interface Sheet2JSONOpts {
     raw?: boolean;
 }
 
-export interface AOA2SheetOpts {
-    /** Use specified format for date cells */
-    dateNF?: NumberFormat;
-
-    /**
-     * Store dates as type d (default is n)
-     * @default false
-     */
-    cellDates?: boolean;
-
+export interface AOA2SheetOpts extends CommonOptions, DateNFOption {
     /**
      * Create cell objects for stub cells
      * @default false
@@ -609,14 +602,14 @@ export interface AOA2SheetOpts {
     sheetStubs?: boolean;
 }
 
-export interface JSON2SheetOpts {
-    /** Use specified date format */
-    dateNF?: NumberFormat;
+export interface JSON2SheetOpts extends CommonOptions, DateNFOption {
+    /** Use specified column order */
+    header?: string[];
 }
 
-export interface Table2SheetOpts {
-    /** Use specified date format */
-    dateNF?: NumberFormat;
+export interface Table2SheetOpts extends CommonOptions, DateNFOption {
+    /* If true, plaintext parsing will not parse values */
+    raw?: boolean;
 }
 
 /** General utilities */
diff --git a/xlsx.flow.js b/xlsx.flow.js
index 14de743..efa3bfa 100644
--- a/xlsx.flow.js
+++ b/xlsx.flow.js
@@ -1088,7 +1088,7 @@ type CFBFiles = {[n:string]:CFBEntry};
 /* [MS-CFB] v20130118 */
 var CFB = (function _CFB(){
 var exports/*:CFBModule*/ = /*::(*/{}/*:: :any)*/;
-exports.version = '0.12.0';
+exports.version = '0.12.1';
 function parse(file/*:RawBytes*/, options/*:CFBReadOpts*/)/*:CFBContainer*/ {
 var mver = 3; // major version
 var ssz = 512; // sector size
@@ -1259,7 +1259,7 @@ function build_full_paths(FI/*:CFBFileIndex*/, FPD/*:CFBFullPathDir*/, FP/*:Arra
 		if(FI[i].type === 0 /* unknown */) continue;
 		j = dad[i];
 		if(j === 0) FP[i] = FP[0] + "/" + FP[i];
-		else while(j !== 0) {
+		else while(j !== 0 && j !== dad[j]) {
 			FP[i] = FP[j] + "/" + FP[i];
 			j = dad[j];
 		}
@@ -1360,7 +1360,6 @@ function read_directory(dir_start/*:number*/, sector_list/*:SectorList*/, sector
 		var blob/*:CFBlob*/ = /*::(*/sector.slice(i, i+128)/*:: :any)*/;
 		prep_blob(blob, 64);
 		namelen = blob.read_shift(2);
-		if(namelen === 0) continue;
 		name = __utf16le(blob,0,namelen-pl);
 		Paths.push(name);
 		var o/*:CFBEntry*/ = ({
@@ -1381,6 +1380,7 @@ function read_directory(dir_start/*:number*/, sector_list/*:SectorList*/, sector
 		if(mtime !== 0) o.mt = read_date(blob, blob.l-8);
 		o.start = blob.read_shift(4, 'i');
 		o.size = blob.read_shift(4, 'i');
+		if(o.size < 0 && o.start < 0) { o.size = o.type = 0; o.start = ENDOFCHAIN; o.name = ""; }
 		if(o.type === 5) { /* root */
 			minifat_store = o.start;
 			if(nmfs > 0 && minifat_store !== ENDOFCHAIN) sector_list[minifat_store].name = "!StreamData";
@@ -1393,7 +1393,7 @@ function read_directory(dir_start/*:number*/, sector_list/*:SectorList*/, sector
 			prep_blob(o.content, 0);
 		} else {
 			o.storage = 'minifat';
-			if(minifat_store !== ENDOFCHAIN && o.start !== ENDOFCHAIN) {
+			if(minifat_store !== ENDOFCHAIN && o.start !== ENDOFCHAIN && sector_list[minifat_store]) {
 				o.content = (sector_list[minifat_store].data.slice(o.start*MSSZ,o.start*MSSZ+o.size)/*:any*/);
 				prep_blob(o.content, 0);
 			}
@@ -1422,6 +1422,9 @@ function readSync(blob/*:RawBytes|string*/, options/*:CFBReadOpts*/) {
 	return parse(/*::typeof blob == 'string' ? new Buffer(blob, 'utf-8') : */blob, options);
 }
 
+function find(cfb/*:CFBContainer*/, path/*:string*/)/*:?CFBEntry*/ {
+	return cfb.find(path);
+}
 /** CFB Constants */
 var MSSZ = 64; /* Mini Sector Size = 1<<6 */
 //var MSCSZ = 4096; /* Mini Stream Cutoff Size */
@@ -1447,6 +1450,7 @@ var consts = {
 	EntryTypes: ['unknown','storage','stream','lockbytes','property','root']
 };
 
+exports.find = find;
 exports.read = readSync;
 exports.parse = parse;
 exports.utils = {
@@ -1577,6 +1581,13 @@ function dup(o/*:any*/)/*:any*/ {
 function fill(c/*:string*/,l/*:number*/)/*:string*/ { var o = ""; while(o.length < l) o+=c; return o; }
 
 /* TODO: stress test */
+function fuzzynum(s/*:string*/)/*:number*/ {
+	var v/*:number*/ = Number(s);
+	if(!isNaN(v)) return v;
+	var ss = s.replace(/([\d]),([\d])/g,"$1$2").replace(/[$]/g,"");
+	if(!isNaN(v = Number(ss))) return v;
+	return v;
+}
 function fuzzydate(s/*:string*/)/*:Date*/ {
 	var o = new Date(s), n = new Date(NaN);
 	var y = o.getYear(), m = o.getMonth(), d = o.getDate();
@@ -5483,8 +5494,8 @@ var SYLK = (function() {
 					if(val.charAt(0) === '"') val = val.substr(1,val.length - 2);
 					else if(val === 'TRUE') val = true;
 					else if(val === 'FALSE') val = false;
-					else if(+val === +val) {
-						val = +val;
+					else if(!isNaN(fuzzynum(val))) {
+						val = fuzzynum(val);
 						if(next_cell_format !== null && SSF.is_date(next_cell_format)) val = numdate(val);
 					} else if(!isNaN(fuzzydate(val).getDate())) {
 						val = parseDate(val);
@@ -5645,7 +5656,7 @@ var DIF = (function() {
 				case 0:
 					if(data === 'TRUE') arr[R][C] = true;
 					else if(data === 'FALSE') arr[R][C] = false;
-					else if(+value == +value) arr[R][C] = +value;
+					else if(!isNaN(fuzzynum(value))) arr[R][C] = fuzzynum(value);
 					else if(!isNaN(fuzzydate(value).getDate())) arr[R][C] = parseDate(value);
 					else arr[R][C] = value;
 					++C; break;
@@ -5731,7 +5742,7 @@ var PRN = (function() {
 		else if(data === 'TRUE') arr[R][C] = true;
 		else if(data === 'FALSE') arr[R][C] = false;
 		else if(data === ""){/* empty */}
-		else if(+data == +data) arr[R][C] = +data;
+		else if(!isNaN(fuzzynum(data))) arr[R][C] = fuzzynum(data);
 		else if(!isNaN(fuzzydate(data).getDate())) arr[R][C] = parseDate(data);
 		else arr[R][C] = data;
 	}
@@ -5782,7 +5793,7 @@ var PRN = (function() {
 			else if(s.charCodeAt(0) == 0x3D) { cell.t = 'n'; cell.f = s.substr(1); }
 			else if(s == "TRUE") { cell.t = 'b'; cell.v = true; }
 			else if(s == "FALSE") { cell.t = 'b'; cell.v = false; }
-			else if(!isNaN(v = +s)) { cell.t = 'n'; cell.w = s; cell.v = v; }
+			else if(!isNaN(v = fuzzynum(s))) { cell.t = 'n'; cell.w = s; cell.v = v; }
 			else if(!isNaN(fuzzydate(s).getDate()) || _re && s.match(_re)) {
 				cell.z = o.dateNF || SSF._table[14];
 				var k = 0;
@@ -14940,11 +14951,11 @@ function parse_workbook(blob, options/*:ParseOpts*/)/*:Workbook*/ {
 /* TODO: WTF */
 function parse_props(cfb) {
 	/* [MS-OSHARED] 2.3.3.2.2 Document Summary Information Property Set */
-	var DSI = cfb.find('!DocumentSummaryInformation');
+	var DSI = CFB.find(cfb, '!DocumentSummaryInformation');
 	if(DSI) try { cfb.DocSummary = parse_PropertySetStream(DSI, DocSummaryPIDDSI); } catch(e) {/* empty */}
 
 	/* [MS-OSHARED] 2.3.3.2.1 Summary Information Property Set*/
-	var SI = cfb.find('!SummaryInformation');
+	var SI = CFB.find(cfb, '!SummaryInformation');
 	if(SI) try { cfb.Summary = parse_PropertySetStream(SI, SummaryPIDSI); } catch(e) {/* empty */}
 }
 
@@ -14952,27 +14963,28 @@ function parse_xlscfb(cfb/*:any*/, options/*:?ParseOpts*/)/*:Workbook*/ {
 if(!options) options = {};
 fix_read_opts(options);
 reset_cp();
-var CompObj, Summary, Workbook/*:?any*/;
+var CompObj, Summary, WB/*:?any*/;
 if(cfb.FullPaths) {
-	CompObj = cfb.find('!CompObj');
-	Summary = cfb.find('!SummaryInformation');
-	Workbook = cfb.find('/Workbook');
+	CompObj = CFB.find(cfb, '!CompObj');
+	Summary = CFB.find(cfb, '!SummaryInformation');
+	WB = CFB.find(cfb, '/Workbook');
 } else {
 	prep_blob(cfb, 0);
-	Workbook = ({content: cfb}/*:any*/);
+	WB = ({content: cfb}/*:any*/);
 }
 
-if(!Workbook) Workbook = cfb.find('/Book');
+if(!WB) WB = CFB.find(cfb, '/Book');
 var CompObjP, SummaryP, WorkbookP/*:Workbook*/;
 
+var _data/*:?any*/;
 if(CompObj) CompObjP = parse_compobj(CompObj);
 if(options.bookProps && !options.bookSheets) WorkbookP = ({}/*:any*/);
 else {
-	if(Workbook) WorkbookP = parse_workbook(Workbook.content, options);
+	if(WB && WB.content) WorkbookP = parse_workbook(WB.content, options);
 	/* Quattro Pro 7-8 */
-	else if(cfb.find('PerfectOffice_MAIN')) WorkbookP = WK_.to_workbook(cfb.find('PerfectOffice_MAIN').content, options);
+	else if((_data=CFB.find(cfb, 'PerfectOffice_MAIN')) && _data.content) WorkbookP = WK_.to_workbook(_data.content, options);
 	/* Quattro Pro 9 */
-	else if(cfb.find('NativeContent_MAIN')) WorkbookP = WK_.to_workbook(cfb.find('NativeContent_MAIN').content, options);
+	else if((_data=CFB.find(cfb, 'NativeContent_MAIN')) && _data.content) WorkbookP = WK_.to_workbook(_data.content, options);
 	else throw new Error("Cannot find Workbook stream");
 }
 
@@ -16386,12 +16398,14 @@ var HTML_ = (function() {
 				if(range.e.c < C) range.e.c = C;
 				if(opts.dense) {
 					if(!ws[R]) ws[R] = [];
-					if(Number(m) == Number(m)) ws[R][C] = {t:'n', v:+m};
+					if(opts.raw) ws[R][C] = {t:'s', v:m};
+					else if(!isNaN(fuzzynum(m))) ws[R][C] = {t:'n', v:fuzzynum(m)};
 					else ws[R][C] = {t:'s', v:m};
 				} else {
 					var coord/*:string*/ = encode_cell({r:R, c:C});
 					/* TODO: value parsing */
-					if(Number(m) == Number(m)) ws[coord] = {t:'n', v:+m};
+					if(opts.raw) ws[coord] = {t:'s', v:m};
+					else if(!isNaN(fuzzynum(m))) ws[coord] = {t:'n', v:fuzzynum(m)};
 					else ws[coord] = {t:'s', v:m};
 				}
 				C += CS;
@@ -16483,7 +16497,8 @@ function parse_dom_table(table/*:HTMLElement*/, _opts/*:?any*/)/*:Worksheet*/ {
 			if((RS = +elt.getAttribute("rowspan"))>0 || CS>1) merges.push({s:{r:R,c:C},e:{r:R + (RS||1) - 1, c:C + CS - 1}});
 			var o/*:Cell*/ = {t:'s', v:v};
 			if(v != null && v.length) {
-				if(!isNaN(Number(v))) o = {t:'n', v:Number(v)};
+				if(opts.raw) o = {t:'s', v:v};
+				else if(!isNaN(fuzzynum(v))) o = {t:'n', v:fuzzynum(v)};
 				else if(!isNaN(fuzzydate(v).getDate())) {
 					o = ({t:'d', v:parseDate(v)}/*:any*/);
 					if(!opts.cellDates) o = ({t:'n', v:datenum(o.v)}/*:any*/);
@@ -17407,20 +17422,20 @@ function parse_zip(zip/*:ZIP*/, opts/*:?ParseOpts*/)/*:Workbook*/ {
 /* references to [MS-OFFCRYPTO] */
 function parse_xlsxcfb(cfb, opts/*:?ParseOpts*/)/*:Workbook*/ {
 	var f = 'Version';
-	var data = cfb.find(f);
+	var data = CFB.find(cfb, f);
 	if(!data || !data.content) throw new Error("ECMA-376 Encrypted file missing " + f);
 	var version = parse_DataSpaceVersionInfo(data.content);
 
 	/* 2.3.4.1 */
 	f = 'DataSpaceMap';
-	data = cfb.find(f);
+	data = CFB.find(cfb, f);
 	if(!data || !data.content) throw new Error("ECMA-376 Encrypted file missing " + f);
 	var dsm = parse_DataSpaceMap(data.content);
 	if(dsm.length != 1 || dsm[0].comps.length != 1 || dsm[0].comps[0].t != 0 || dsm[0].name != "StrongEncryptionDataSpace" || dsm[0].comps[0].v != "EncryptedPackage")
 		throw new Error("ECMA-376 Encrypted file bad " + f);
 
 	f = 'StrongEncryptionDataSpace';
-	data = cfb.find(f);
+	data = CFB.find(cfb, f);
 	if(!data || !data.content) throw new Error("ECMA-376 Encrypted file missing " + f);
 	var seds = parse_DataSpaceDefinition(data.content);
 	if(seds.length != 1 || seds[0] != "StrongEncryptionTransform")
@@ -17428,12 +17443,12 @@ function parse_xlsxcfb(cfb, opts/*:?ParseOpts*/)/*:Workbook*/ {
 
 	/* 2.3.4.3 */
 	f = '!Primary';
-	data = cfb.find(f);
+	data = CFB.find(cfb, f);
 	if(!data || !data.content) throw new Error("ECMA-376 Encrypted file missing " + f);
 	var hdr = parse_Primary(data.content);
 
 	f = 'EncryptionInfo';
-	data = cfb.find(f);
+	data = CFB.find(cfb, f);
 	if(!data || !data.content) throw new Error("ECMA-376 Encrypted file missing " + f);
 	var einfo = parse_EncryptionInfo(data.content);
 
@@ -17579,8 +17594,8 @@ function firstbyte(f/*:RawData*/,o/*:?TypeOpts*/)/*:Array<number>*/ {
 	return [x.charCodeAt(0), x.charCodeAt(1), x.charCodeAt(2), x.charCodeAt(3)];
 }
 
-function read_cfb(cfb, opts/*:?ParseOpts*/)/*:Workbook*/ {
-	if(cfb.find("EncryptedPackage")) return parse_xlsxcfb(cfb, opts);
+function read_cfb(cfb/*:CFBContainer*/, opts/*:?ParseOpts*/)/*:Workbook*/ {
+	if(CFB.find(cfb, "EncryptedPackage")) return parse_xlsxcfb(cfb, opts);
 	return parse_xlscfb(cfb, opts);
 }
 
@@ -17778,11 +17793,11 @@ function writeFileAsync(filename/*:string*/, wb/*:Workbook*/, opts/*:?WriteFileO
 	var _cb = cb; if(!(_cb instanceof Function)) _cb = (opts/*:any*/);
 	return _fs.writeFile(filename, writeSync(wb, o), _cb);
 }
-function sheet_to_json(sheet/*:Worksheet*/, opts/*:?Sheet2JSONOpts*/){
+function sheet_to_json(sheet/*:Worksheet*/, opts/*:?Sheet2JSONOpts*/) {
 	if(sheet == null || sheet["!ref"] == null) return [];
 	var val = {t:'n',v:0}, header = 0, offset = 1, hdr/*:Array<any>*/ = [], isempty = true, v=0, vv="";
 	var r = {s:{r:0,c:0},e:{r:0,c:0}};
-	var o = opts != null ? opts : {};
+	var o = opts || {};
 	var raw = o.raw;
 	var defval = o.defval;
 	var range = o.range != null ? o.range : sheet["!ref"];
@@ -17796,8 +17811,8 @@ function sheet_to_json(sheet/*:Worksheet*/, opts/*:?Sheet2JSONOpts*/){
 	}
 	if(header > 0) offset = 0;
 	var rr = encode_row(r.s.r);
-	var cols = new Array(r.e.c-r.s.c+1);
-	var out = new Array(r.e.r-r.s.r-offset+1);
+	var cols/*:Array<string>*/ = [];
+	var out/*:Array<any>*/ = [];
 	var outi = 0, counter = 0;
 	var dense = Array.isArray(sheet);
 	var R = r.s.r, C = 0, CC = 0;
@@ -17817,7 +17832,7 @@ function sheet_to_json(sheet/*:Worksheet*/, opts/*:?Sheet2JSONOpts*/){
 				hdr[C] = vv;
 		}
 	}
-	var row = (header === 1) ? [] : {};
+	var row/*:any*/ = (header === 1) ? [] : {};
 	for (R = r.s.r + offset; R <= r.e.r; ++R) {
 		rr = encode_row(R);
 		isempty = true;
@@ -17861,7 +17876,7 @@ 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*/ {
 	var isempty = true;
-	var row = [], txt = "", rr = encode_row(R);
+	var row/*:Array<string>*/ = [], txt = "", rr = encode_row(R);
 	for(var C = r.s.c; C <= r.e.c; ++C) {
 		if (!cols[C]) continue;
 		var val = o.dense ? (sheet[R]||[])[C]: sheet[cols[C] + rr];
diff --git a/xlsx.js b/xlsx.js
index 0504375..4b3fad5 100644
--- a/xlsx.js
+++ b/xlsx.js
@@ -1026,7 +1026,7 @@ var DO_NOT_EXPORT_CFB = true;
 /* [MS-CFB] v20130118 */
 var CFB = (function _CFB(){
 var exports = {};
-exports.version = '0.12.0';
+exports.version = '0.12.1';
 function parse(file, options) {
 var mver = 3; // major version
 var ssz = 512; // sector size
@@ -1197,7 +1197,7 @@ function build_full_paths(FI, FPD, FP, Paths) {
 		if(FI[i].type === 0 /* unknown */) continue;
 		j = dad[i];
 		if(j === 0) FP[i] = FP[0] + "/" + FP[i];
-		else while(j !== 0) {
+		else while(j !== 0 && j !== dad[j]) {
 			FP[i] = FP[j] + "/" + FP[i];
 			j = dad[j];
 		}
@@ -1298,7 +1298,6 @@ function read_directory(dir_start, sector_list, sectors, Paths, nmfs, files, Fil
 		var blob = sector.slice(i, i+128);
 		prep_blob(blob, 64);
 		namelen = blob.read_shift(2);
-		if(namelen === 0) continue;
 		name = __utf16le(blob,0,namelen-pl);
 		Paths.push(name);
 		var o = ({
@@ -1319,6 +1318,7 @@ function read_directory(dir_start, sector_list, sectors, Paths, nmfs, files, Fil
 		if(mtime !== 0) o.mt = read_date(blob, blob.l-8);
 		o.start = blob.read_shift(4, 'i');
 		o.size = blob.read_shift(4, 'i');
+		if(o.size < 0 && o.start < 0) { o.size = o.type = 0; o.start = ENDOFCHAIN; o.name = ""; }
 		if(o.type === 5) { /* root */
 			minifat_store = o.start;
 			if(nmfs > 0 && minifat_store !== ENDOFCHAIN) sector_list[minifat_store].name = "!StreamData";
@@ -1331,7 +1331,7 @@ function read_directory(dir_start, sector_list, sectors, Paths, nmfs, files, Fil
 			prep_blob(o.content, 0);
 		} else {
 			o.storage = 'minifat';
-			if(minifat_store !== ENDOFCHAIN && o.start !== ENDOFCHAIN) {
+			if(minifat_store !== ENDOFCHAIN && o.start !== ENDOFCHAIN && sector_list[minifat_store]) {
 				o.content = (sector_list[minifat_store].data.slice(o.start*MSSZ,o.start*MSSZ+o.size));
 				prep_blob(o.content, 0);
 			}
@@ -1360,6 +1360,9 @@ function readSync(blob, options) {
 	return parse(blob, options);
 }
 
+function find(cfb, path) {
+	return cfb.find(path);
+}
 /** CFB Constants */
 var MSSZ = 64; /* Mini Sector Size = 1<<6 */
 //var MSCSZ = 4096; /* Mini Stream Cutoff Size */
@@ -1385,6 +1388,7 @@ var consts = {
 	EntryTypes: ['unknown','storage','stream','lockbytes','property','root']
 };
 
+exports.find = find;
 exports.read = readSync;
 exports.parse = parse;
 exports.utils = {
@@ -1514,6 +1518,13 @@ function dup(o) {
 function fill(c,l) { var o = ""; while(o.length < l) o+=c; return o; }
 
 /* TODO: stress test */
+function fuzzynum(s) {
+	var v = Number(s);
+	if(!isNaN(v)) return v;
+	var ss = s.replace(/([\d]),([\d])/g,"$1$2").replace(/[$]/g,"");
+	if(!isNaN(v = Number(ss))) return v;
+	return v;
+}
 function fuzzydate(s) {
 	var o = new Date(s), n = new Date(NaN);
 	var y = o.getYear(), m = o.getMonth(), d = o.getDate();
@@ -5409,8 +5420,8 @@ var SYLK = (function() {
 					if(val.charAt(0) === '"') val = val.substr(1,val.length - 2);
 					else if(val === 'TRUE') val = true;
 					else if(val === 'FALSE') val = false;
-					else if(+val === +val) {
-						val = +val;
+					else if(!isNaN(fuzzynum(val))) {
+						val = fuzzynum(val);
 						if(next_cell_format !== null && SSF.is_date(next_cell_format)) val = numdate(val);
 					} else if(!isNaN(fuzzydate(val).getDate())) {
 						val = parseDate(val);
@@ -5571,7 +5582,7 @@ var DIF = (function() {
 				case 0:
 					if(data === 'TRUE') arr[R][C] = true;
 					else if(data === 'FALSE') arr[R][C] = false;
-					else if(+value == +value) arr[R][C] = +value;
+					else if(!isNaN(fuzzynum(value))) arr[R][C] = fuzzynum(value);
 					else if(!isNaN(fuzzydate(value).getDate())) arr[R][C] = parseDate(value);
 					else arr[R][C] = value;
 					++C; break;
@@ -5657,7 +5668,7 @@ var PRN = (function() {
 		else if(data === 'TRUE') arr[R][C] = true;
 		else if(data === 'FALSE') arr[R][C] = false;
 		else if(data === ""){/* empty */}
-		else if(+data == +data) arr[R][C] = +data;
+		else if(!isNaN(fuzzynum(data))) arr[R][C] = fuzzynum(data);
 		else if(!isNaN(fuzzydate(data).getDate())) arr[R][C] = parseDate(data);
 		else arr[R][C] = data;
 	}
@@ -5708,7 +5719,7 @@ var PRN = (function() {
 			else if(s.charCodeAt(0) == 0x3D) { cell.t = 'n'; cell.f = s.substr(1); }
 			else if(s == "TRUE") { cell.t = 'b'; cell.v = true; }
 			else if(s == "FALSE") { cell.t = 'b'; cell.v = false; }
-			else if(!isNaN(v = +s)) { cell.t = 'n'; cell.w = s; cell.v = v; }
+			else if(!isNaN(v = fuzzynum(s))) { cell.t = 'n'; cell.w = s; cell.v = v; }
 			else if(!isNaN(fuzzydate(s).getDate()) || _re && s.match(_re)) {
 				cell.z = o.dateNF || SSF._table[14];
 				var k = 0;
@@ -14854,11 +14865,11 @@ wb.opts.Date1904 = Workbook.WBProps.date1904 = val; break;
 /* TODO: WTF */
 function parse_props(cfb) {
 	/* [MS-OSHARED] 2.3.3.2.2 Document Summary Information Property Set */
-	var DSI = cfb.find('!DocumentSummaryInformation');
+	var DSI = CFB.find(cfb, '!DocumentSummaryInformation');
 	if(DSI) try { cfb.DocSummary = parse_PropertySetStream(DSI, DocSummaryPIDDSI); } catch(e) {/* empty */}
 
 	/* [MS-OSHARED] 2.3.3.2.1 Summary Information Property Set*/
-	var SI = cfb.find('!SummaryInformation');
+	var SI = CFB.find(cfb, '!SummaryInformation');
 	if(SI) try { cfb.Summary = parse_PropertySetStream(SI, SummaryPIDSI); } catch(e) {/* empty */}
 }
 
@@ -14866,27 +14877,28 @@ function parse_xlscfb(cfb, options) {
 if(!options) options = {};
 fix_read_opts(options);
 reset_cp();
-var CompObj, Summary, Workbook;
+var CompObj, Summary, WB;
 if(cfb.FullPaths) {
-	CompObj = cfb.find('!CompObj');
-	Summary = cfb.find('!SummaryInformation');
-	Workbook = cfb.find('/Workbook');
+	CompObj = CFB.find(cfb, '!CompObj');
+	Summary = CFB.find(cfb, '!SummaryInformation');
+	WB = CFB.find(cfb, '/Workbook');
 } else {
 	prep_blob(cfb, 0);
-	Workbook = ({content: cfb});
+	WB = ({content: cfb});
 }
 
-if(!Workbook) Workbook = cfb.find('/Book');
+if(!WB) WB = CFB.find(cfb, '/Book');
 var CompObjP, SummaryP, WorkbookP;
 
+var _data;
 if(CompObj) CompObjP = parse_compobj(CompObj);
 if(options.bookProps && !options.bookSheets) WorkbookP = ({});
 else {
-	if(Workbook) WorkbookP = parse_workbook(Workbook.content, options);
+	if(WB && WB.content) WorkbookP = parse_workbook(WB.content, options);
 	/* Quattro Pro 7-8 */
-	else if(cfb.find('PerfectOffice_MAIN')) WorkbookP = WK_.to_workbook(cfb.find('PerfectOffice_MAIN').content, options);
+	else if((_data=CFB.find(cfb, 'PerfectOffice_MAIN')) && _data.content) WorkbookP = WK_.to_workbook(_data.content, options);
 	/* Quattro Pro 9 */
-	else if(cfb.find('NativeContent_MAIN')) WorkbookP = WK_.to_workbook(cfb.find('NativeContent_MAIN').content, options);
+	else if((_data=CFB.find(cfb, 'NativeContent_MAIN')) && _data.content) WorkbookP = WK_.to_workbook(_data.content, options);
 	else throw new Error("Cannot find Workbook stream");
 }
 
@@ -16300,12 +16312,14 @@ var HTML_ = (function() {
 				if(range.e.c < C) range.e.c = C;
 				if(opts.dense) {
 					if(!ws[R]) ws[R] = [];
-					if(Number(m) == Number(m)) ws[R][C] = {t:'n', v:+m};
+					if(opts.raw) ws[R][C] = {t:'s', v:m};
+					else if(!isNaN(fuzzynum(m))) ws[R][C] = {t:'n', v:fuzzynum(m)};
 					else ws[R][C] = {t:'s', v:m};
 				} else {
 					var coord = encode_cell({r:R, c:C});
 					/* TODO: value parsing */
-					if(Number(m) == Number(m)) ws[coord] = {t:'n', v:+m};
+					if(opts.raw) ws[coord] = {t:'s', v:m};
+					else if(!isNaN(fuzzynum(m))) ws[coord] = {t:'n', v:fuzzynum(m)};
 					else ws[coord] = {t:'s', v:m};
 				}
 				C += CS;
@@ -16397,7 +16411,8 @@ function parse_dom_table(table, _opts) {
 			if((RS = +elt.getAttribute("rowspan"))>0 || CS>1) merges.push({s:{r:R,c:C},e:{r:R + (RS||1) - 1, c:C + CS - 1}});
 			var o = {t:'s', v:v};
 			if(v != null && v.length) {
-				if(!isNaN(Number(v))) o = {t:'n', v:Number(v)};
+				if(opts.raw) o = {t:'s', v:v};
+				else if(!isNaN(fuzzynum(v))) o = {t:'n', v:fuzzynum(v)};
 				else if(!isNaN(fuzzydate(v).getDate())) {
 					o = ({t:'d', v:parseDate(v)});
 					if(!opts.cellDates) o = ({t:'n', v:datenum(o.v)});
@@ -17320,20 +17335,20 @@ function parse_zip(zip, opts) {
 /* references to [MS-OFFCRYPTO] */
 function parse_xlsxcfb(cfb, opts) {
 	var f = 'Version';
-	var data = cfb.find(f);
+	var data = CFB.find(cfb, f);
 	if(!data || !data.content) throw new Error("ECMA-376 Encrypted file missing " + f);
 	var version = parse_DataSpaceVersionInfo(data.content);
 
 	/* 2.3.4.1 */
 	f = 'DataSpaceMap';
-	data = cfb.find(f);
+	data = CFB.find(cfb, f);
 	if(!data || !data.content) throw new Error("ECMA-376 Encrypted file missing " + f);
 	var dsm = parse_DataSpaceMap(data.content);
 	if(dsm.length != 1 || dsm[0].comps.length != 1 || dsm[0].comps[0].t != 0 || dsm[0].name != "StrongEncryptionDataSpace" || dsm[0].comps[0].v != "EncryptedPackage")
 		throw new Error("ECMA-376 Encrypted file bad " + f);
 
 	f = 'StrongEncryptionDataSpace';
-	data = cfb.find(f);
+	data = CFB.find(cfb, f);
 	if(!data || !data.content) throw new Error("ECMA-376 Encrypted file missing " + f);
 	var seds = parse_DataSpaceDefinition(data.content);
 	if(seds.length != 1 || seds[0] != "StrongEncryptionTransform")
@@ -17341,12 +17356,12 @@ function parse_xlsxcfb(cfb, opts) {
 
 	/* 2.3.4.3 */
 	f = '!Primary';
-	data = cfb.find(f);
+	data = CFB.find(cfb, f);
 	if(!data || !data.content) throw new Error("ECMA-376 Encrypted file missing " + f);
 	var hdr = parse_Primary(data.content);
 
 	f = 'EncryptionInfo';
-	data = cfb.find(f);
+	data = CFB.find(cfb, f);
 	if(!data || !data.content) throw new Error("ECMA-376 Encrypted file missing " + f);
 	var einfo = parse_EncryptionInfo(data.content);
 
@@ -17491,7 +17506,7 @@ function firstbyte(f,o) {
 }
 
 function read_cfb(cfb, opts) {
-	if(cfb.find("EncryptedPackage")) return parse_xlsxcfb(cfb, opts);
+	if(CFB.find(cfb, "EncryptedPackage")) return parse_xlsxcfb(cfb, opts);
 	return parse_xlscfb(cfb, opts);
 }
 
@@ -17688,11 +17703,11 @@ function writeFileAsync(filename, wb, opts, cb) {
 	var _cb = cb; if(!(_cb instanceof Function)) _cb = (opts);
 	return _fs.writeFile(filename, writeSync(wb, o), _cb);
 }
-function sheet_to_json(sheet, opts){
+function sheet_to_json(sheet, opts) {
 	if(sheet == null || sheet["!ref"] == null) return [];
 	var val = {t:'n',v:0}, header = 0, offset = 1, hdr = [], isempty = true, v=0, vv="";
 	var r = {s:{r:0,c:0},e:{r:0,c:0}};
-	var o = opts != null ? opts : {};
+	var o = opts || {};
 	var raw = o.raw;
 	var defval = o.defval;
 	var range = o.range != null ? o.range : sheet["!ref"];
@@ -17706,8 +17721,8 @@ function sheet_to_json(sheet, opts){
 	}
 	if(header > 0) offset = 0;
 	var rr = encode_row(r.s.r);
-	var cols = new Array(r.e.c-r.s.c+1);
-	var out = new Array(r.e.r-r.s.r-offset+1);
+	var cols = [];
+	var out = [];
 	var outi = 0, counter = 0;
 	var dense = Array.isArray(sheet);
 	var R = r.s.r, C = 0, CC = 0;