diff --git a/.eslintrc b/.eslintrc
index 82a112d..f020fa2 100644
--- a/.eslintrc
+++ b/.eslintrc
@@ -2,19 +2,23 @@
 	"env": { "shared-node-browser":true },
 	"globals": {},
 	"parserOptions": {
-		"ecmaVersion": 3,
+		"ecmaVersion": 3
 	},
 	"plugins": [ "html", "json" ],
 	"extends": "eslint:recommended",
 	"rules": {
+		"comma-style": [ 2, "last" ],
+		"comma-dangle": [ 2, "never" ],
+		"curly": 0,
+		"no-bitwise": 0,
+		"no-console": 0,
+		"no-control-regex": 0,
+		"no-empty": 0,
+		"no-trailing-spaces": 2,
 		"no-use-before-define": [ 1, {
 			"functions":false, "classes":true, "variables":false
 		}],
-		"no-bitwise": 0,
-		"curly": 0,
-		"comma-style": [ 2, "last" ],
-		"no-trailing-spaces": 2,
-		"semi": [ 2, "always" ],
-		"comma-dangle": [ 2, "never" ]
+		"no-useless-escape": 0,
+		"semi": [ 2, "always" ]
 	}
 }
diff --git a/.flowconfig b/.flowconfig
index c2970aa..c7bd9cc 100644
--- a/.flowconfig
+++ b/.flowconfig
@@ -27,3 +27,8 @@ misc/flowdeps.js
 [options]
 module.file_ext=.js
 module.file_ext=.njs
+module.ignore_non_literal_requires=true
+suppress_comment= \\(.\\|\n\\)*\\$FlowIgnore
+
+[lints]
+deprecated-declare-exports=off
diff --git a/.npmignore b/.npmignore
index 0636bb1..1be4c79 100644
--- a/.npmignore
+++ b/.npmignore
@@ -13,20 +13,27 @@ tmp
 *.[pP][rR][nN]
 *.[sS][lL][kK]
 *.socialcalc
-*.[xX][lL][sSwWcC]
-*.[xX][lL][sS][xXmMbB]
+*.[xX][lL][sSwWcCaAtTmM]
+*.[xX][lL][sSaAtT][xXmMbB]
 *.[oO][dD][sS]
 *.[fF][oO][dD][sS]
 *.[xX][mM][lL]
 *.[uU][oO][sS]
 *.[wW][kKqQbB][S1234567890]
 *.[qQ][pP][wW]
+*.[bB][iI][fF][fF][23458]
+*.[rR][tT][fF]
+*.[eE][tT][hH]
 *.123
 *.htm
 *.html
 *.sheetjs
 *.exe
+*.img
 .gitignore
+.gitattributes
+.fossaignore
+.spelling
 .eslintrc
 .jshintrc
 Makefile
diff --git a/.spelling b/.spelling
new file mode 100644
index 0000000..ef89b9f
--- /dev/null
+++ b/.spelling
@@ -0,0 +1,9 @@
+# ssf.js (C) 2013-present SheetJS -- http://sheetjs.com
+SheetJS
+ssf
+
+ECMA-376
+xls
+xlsb
+
+npm
diff --git a/Makefile b/Makefile
index e076b16..85dc5a0 100755
--- a/Makefile
+++ b/Makefile
@@ -60,6 +60,9 @@ ctestserv: ## Start a test server on port 8000
 
 ## Code Checking
 
+.PHONY: fullint
+fullint: lint old-lint tslint flow mdlint ## Run all checks
+
 .PHONY: lint
 lint: $(TARGET) $(AUXTARGETS) ## Run eslint checks
 	@eslint --ext .js,.njs,.json,.html,.htm $(TARGET) $(AUXTARGETS) $(CMDS) $(HTMLLINT) package.json bower.json
@@ -68,13 +71,18 @@ lint: $(TARGET) $(AUXTARGETS) ## Run eslint checks
 .PHONY: old-lint
 old-lint: $(TARGET) $(AUXTARGETS) ## Run jshint and jscs checks
 	@jshint --show-non-errors $(TARGET) $(AUXTARGETS)
-	@jshint --show-non-errors test/
 	@jshint --show-non-errors $(CMDS)
-	@jshint --show-non-errors package.json
+	@jshint --show-non-errors package.json test/
 	@jshint --show-non-errors --extract=always $(HTMLLINT)
-	@jscs $(TARGET) $(AUXTARGETS)
+	@jscs $(TARGET) $(AUXTARGETS) test/*.js
 	if [ -e $(CLOSURE) ]; then java -jar $(CLOSURE) $(REQS) $(FLOWTARGET) --jscomp_warning=reportUnknownTypes >/dev/null; fi
 
+.PHONY: tslint
+tslint: $(TARGET) ## Run typescript checks
+	#@npm install dtslint typescript
+	#@npm run-script dtslint
+	dtslint types
+
 .PHONY: flow
 flow: lint ## Run flow checker
 	@flow check --all --show-all-errors
@@ -97,6 +105,11 @@ full_coveralls:
 coveralls: ## Coverage Test + Send to coveralls.io
 	MINTEST=1 make full_coveralls
 
+MDLINT=README.md
+.PHONY: mdlint
+mdlint: $(MDLINT) ## Check markdown documents
+	alex $^
+	mdspell -a -n -x -r --en-us $^
 
 .PHONY: help
 help:
diff --git a/README.md b/README.md
index 114b22a..e62f786 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,6 @@
 # [SheetJS SSF](http://sheetjs.com)
 
-ssf (SpreadSheet Format) is a pure-JS library to format data using ECMA-376
+ssf (SpreadSheet Format) is a pure JS library to format data using ECMA-376
 spreadsheet format codes (used in popular spreadsheet software packages).
 
 
@@ -23,9 +23,8 @@ The browser exposes a variable `SSF`
 When installed globally, npm installs a script `ssf` that renders the format
 string with the given arguments.  Running the script with `-h` displays help.
 
-The script will manipulate `module.exports` if available (e.g. in a CommonJS
-`require` context).  This is not always desirable.  To prevent the behavior,
-define `DO_NOT_EXPORT_SSF`.
+The script will manipulate `module.exports` if available .  This is not always
+desirable.  To prevent the behavior, define `DO_NOT_EXPORT_SSF`.
 
 ## Usage
 
@@ -41,7 +40,7 @@ The options argument may contain the following keys:
 
 | Option Name | Default | Description                                          |
 | :---------- | :-----: | :--------------------------------------------------- |
-| date1904    | false   | Use 1904 date system if true, 1900 system if false   |
+| `date1904`  | false   | Use 1904 date system if true, 1900 system if false   |
 
 ### Manipulating the Internal Format Table
 
@@ -89,8 +88,9 @@ granted by the Apache 2.0 license are reserved by the Original Author.
 
 ## References
 
-- [ECMA-376] Office Open XML File Formats
-- [MS-XLSB] Excel (.xlsb) Binary File Format
+ - `ECMA-376`: Office Open XML File Formats
+ - `MS-XLS`: Excel Binary File Format (.xls) Structure Specification
+ - `MS-XLSB`: Excel (.xlsb) Binary File Format
 
 ## Badges
 
diff --git a/bin/ssf.njs b/bin/ssf.njs
index 5992a82..79610a5 100755
--- a/bin/ssf.njs
+++ b/bin/ssf.njs
@@ -2,6 +2,7 @@
 /* ssf.js (C) 2013-present SheetJS -- http://sheetjs.com */
 /* eslint-env node */
 /* eslint no-console:0 */
+/*jshint node:true */
 var X = require('../');
 var argv = process.argv.slice(2);
 if(argv.length < 2 || argv[0] == "-h" || argv[0] == "--help") {
diff --git a/bits/01_version.js b/bits/01_version.js
index 48b8ef0..7654606 100644
--- a/bits/01_version.js
+++ b/bits/01_version.js
@@ -1 +1 @@
-SSF.version = '0.10.1';
+SSF.version = '0.10.2';
diff --git a/bits/88_cond.js b/bits/88_cond.js
index ef0dd73..fe1a6c0 100644
--- a/bits/88_cond.js
+++ b/bits/88_cond.js
@@ -1,5 +1,5 @@
 var cfregex = /\[[=<>]/;
-var cfregex2 = /\[([=<>]*)(-?\d+\.?\d*)\]/;
+var cfregex2 = /\[(=|>[=]?|<[>=]?)(-?\d+(?:\.\d*)?)\]/;
 function chkcond(v, rr) {
 	if(rr == null) return false;
 	var thresh = parseFloat(rr[2]);
diff --git a/index.html b/index.html
index d9b4504..ce611df 100644
--- a/index.html
+++ b/index.html
@@ -27,6 +27,7 @@ a { text-decoration: none }
 <script>
 /*jshint browser:true */
 /*eslint-env browser */
+/*eslint no-use-before-define:0 */
 /*global SSF */
 var F = document.getElementById('fmt');
 var V = document.getElementById('val');
@@ -55,8 +56,6 @@ if(F.addEventListener) {
 }
 
 update();
-</script>
-<script type="text/javascript">
 	var _gaq = _gaq || [];
 	_gaq.push(['_setAccount', 'UA-36810333-1']);
 	_gaq.push(['_trackPageview']);
diff --git a/package.json b/package.json
index ddb9c2c..97259df 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
 	"name": "ssf",
-	"version": "0.10.1",
+	"version": "0.10.2",
 	"author": "sheetjs",
 	"description": "Format data using ECMA-376 spreadsheet Format Codes",
 	"keywords": [ "format", "sprintf", "spreadsheet" ],
@@ -8,24 +8,31 @@
 		"ssf": "./bin/ssf.njs"
 	},
 	"main": "./ssf",
+	"types": "types",
 	"dependencies": {
-		"frac":"~1.1.0"
+		"frac":"~1.1.2"
 	},
 	"devDependencies": {
-		"mocha":"~2.5.3",
+		"mocha": "~2.5.3",
 		"blanket": "~1.2.3",
-		"@sheetjs/uglify-js":"~2.7.3"
+		"@sheetjs/uglify-js":"~2.7.3",
+		"@types/node":"^8.0.7",
+		"dtslint": "^0.1.2",
+		"typescript": "2.2.0"
 	},
 	"repository": { "type":"git", "url":"git://github.com/SheetJS/ssf.git" },
 	"scripts": {
-		"test": "make test"
+		"test": "make test",
+		"build": "make",
+		"lint": "make fullint",
+		"dtslint": "dtslint types"
 	},
 	"config": {
 		"blanket": {
 			"pattern": "ssf.js"
 		}
 	},
-	"homepage": "https://oss.sheetjs.com/ssf",
+	"homepage": "http://sheetjs.com/opensource",
 	"bugs": { "url": "https://github.com/SheetJS/ssf/issues" },
 	"license": "Apache-2.0",
 	"engines": { "node": ">=0.8" }
diff --git a/ssf.flow.js b/ssf.flow.js
index e06406a..dd0607b 100644
--- a/ssf.flow.js
+++ b/ssf.flow.js
@@ -4,7 +4,7 @@
 /*:: declare var DO_NOT_EXPORT_SSF: any; */
 var SSF/*:SSFModule*/ = ({}/*:any*/);
 var make_ssf = function make_ssf(SSF/*:SSFModule*/){
-SSF.version = '0.10.1';
+SSF.version = '0.10.2';
 function _strrev(x/*:string*/)/*:string*/ { var o = "", i = x.length-1; while(i>=0) o += x.charAt(i--); return o; }
 function fill(c/*:string*/,l/*:number*/)/*:string*/ { var o = ""; while(o.length < l) o+=c; return o; }
 function pad0(v/*:any*/,d/*:number*/)/*:string*/{var t=""+v; return t.length>=d?t:fill('0',d-t.length)+t;}
@@ -793,7 +793,7 @@ function eval_fmt(fmt/*:string*/, v/*:any*/, opts/*:any*/, flen/*:number*/) {
 }
 SSF._eval = eval_fmt;
 var cfregex = /\[[=<>]/;
-var cfregex2 = /\[([=<>]*)(-?\d+\.?\d*)\]/;
+var cfregex2 = /\[(=|>[=]?|<[>=]?)(-?\d+(?:\.\d*)?)\]/;
 function chkcond(v, rr) {
 	if(rr == null) return false;
 	var thresh = parseFloat(rr[2]);
diff --git a/ssf.js b/ssf.js
index 140c1f7..cc86fea 100644
--- a/ssf.js
+++ b/ssf.js
@@ -3,7 +3,7 @@
 /*jshint -W041 */
 var SSF = ({});
 var make_ssf = function make_ssf(SSF){
-SSF.version = '0.10.1';
+SSF.version = '0.10.2';
 function _strrev(x) { var o = "", i = x.length-1; while(i>=0) o += x.charAt(i--); return o; }
 function fill(c,l) { var o = ""; while(o.length < l) o+=c; return o; }
 function pad0(v,d){var t=""+v; return t.length>=d?t:fill('0',d-t.length)+t;}
@@ -783,7 +783,7 @@ out[i].v = write_date(out[i].t.charCodeAt(0), out[i].v, dt, ss0);
 }
 SSF._eval = eval_fmt;
 var cfregex = /\[[=<>]/;
-var cfregex2 = /\[([=<>]*)(-?\d+\.?\d*)\]/;
+var cfregex2 = /\[(=|>[=]?|<[>=]?)(-?\d+(?:\.\d*)?)\]/;
 function chkcond(v, rr) {
 	if(rr == null) return false;
 	var thresh = parseFloat(rr[2]);
diff --git a/test/dateNF.js b/test/dateNF.js
index 6455c93..17a9dd6 100644
--- a/test/dateNF.js
+++ b/test/dateNF.js
@@ -1,7 +1,7 @@
 /* vim: set ts=2: */
 /*jshint loopfunc:true, mocha:true, node:true */
 var SSF = require('../');
-var fs = require('fs'), assert = require('assert');
+var assert = require('assert');
 describe('dateNF override', function() {
   it('should override format code 14', function() {
     assert.equal(SSF.format(14, 43880), "2/19/20");
diff --git a/types/.npmignore b/types/.npmignore
new file mode 100644
index 0000000..b1caa52
--- /dev/null
+++ b/types/.npmignore
@@ -0,0 +1,5 @@
+Makefile
+*ssf*.ts
+doc.ts
+write.ts
+tslint.json
diff --git a/types/bin_ssf.ts b/types/bin_ssf.ts
new file mode 100755
index 0000000..616c3c9
--- /dev/null
+++ b/types/bin_ssf.ts
@@ -0,0 +1,13 @@
+/* ssf.js (C) 2013-present SheetJS -- http://sheetjs.com */
+/* eslint-env node */
+/* eslint no-console:0 */
+/*jshint node:true */
+/// <reference types="../node_modules/@types/node/" />
+import X = require('ssf');
+const argv = process.argv.slice(2);
+if(argv.length < 2 || argv[0] === "-h" || argv[0] === "--help") {
+	console.error("usage: ssf <format> <value>");
+	console.error("output: format_as_string|format_as_number|");
+	process.exit(0);
+}
+console.log(X.format(argv[0],argv[1]) + "|" + X.format(argv[0],+(argv[1])) + "|");
diff --git a/types/index.d.ts b/types/index.d.ts
new file mode 100644
index 0000000..f788a3d
--- /dev/null
+++ b/types/index.d.ts
@@ -0,0 +1,56 @@
+/* ssf.js (C) 2013-present SheetJS -- http://sheetjs.com */
+// TypeScript Version: 2.2
+
+/** Version string */
+export const version: string;
+
+/** Render value using format string or code */
+export function format(fmt: string|number, val: any, opts?: any): string;
+
+/** Load format string */
+export function load(fmt: string, idx?: number): number;
+
+/** Test if the format is a Date format */
+export function is_date(fmt: string): boolean;
+
+
+/** Format Table */
+export interface SSF$Table {
+	[key: number]: string;
+	[key: string]: string;
+}
+
+/** Get format table */
+export function get_table(): SSF$Table;
+
+/** Set format table */
+export function load_table(tbl: SSF$Table): void;
+
+
+/** Parsed date */
+export interface SSF$Date {
+	/** number of whole days since relevant epoch, 0 <= D */
+	D: number;
+	/** integral year portion, epoch_year <= y */
+	y: number;
+	/** integral month portion, 1 <= m <= 12 */
+	m: number;
+	/** integral day portion, subject to gregorian YMD constraints */
+	d: number;
+	/** integral day of week (0=Sunday .. 6=Saturday) 0 <= q <= 6 */
+	q: number;
+
+	/** number of seconds since midnight, 0 <= T < 86400 */
+	T: number;
+	/** integral number of hours since midnight, 0 <= H < 24 */
+	H: number;
+	/** integral number of minutes since the last hour, 0 <= M < 60 */
+	M: number;
+	/** integral number of seconds since the last minute, 0 <= S < 60 */
+	S: number;
+	/** sub-second part of time, 0 <= u < 1 */
+	u: number;
+}
+
+/** Parse numeric date code */
+export function parse_date_code(v: number, opts?: any): SSF$Date;
diff --git a/types/ssf-test.ts b/types/ssf-test.ts
new file mode 100644
index 0000000..462111d
--- /dev/null
+++ b/types/ssf-test.ts
@@ -0,0 +1,16 @@
+import { format, load, get_table, load_table, parse_date_code, is_date, SSF$Table, SSF$Date } from 'ssf';
+
+const t1: string = format("General", 123.456);
+const t2: string = format(0, 234.567);
+const t3: string = format("@", "1234.567");
+
+load('"This is "0.00', 70);
+load('"This is "0');
+
+const tbl: SSF$Table = get_table();
+load_table(tbl);
+
+const date: SSF$Date = parse_date_code(43150);
+const sum: number = date.D + date.T + date.y + date.m + date.d + date.H + date.M + date.S + date.q + date.u;
+
+const isdate: boolean = is_date("YYYY-MM-DD");
diff --git a/types/tsconfig.json b/types/tsconfig.json
new file mode 100644
index 0000000..7a38008
--- /dev/null
+++ b/types/tsconfig.json
@@ -0,0 +1,14 @@
+{
+    "compilerOptions": {
+        "module": "commonjs",
+        "lib": [ "es5" ],
+        "noImplicitAny": true,
+        "noImplicitThis": true,
+        "strictNullChecks": false,
+        "baseUrl": ".",
+        "paths": { "ssf": ["."] },
+        "types": [],
+        "noEmit": true,
+        "forceConsistentCasingInFileNames": true
+    }
+}
diff --git a/types/tslint.json b/types/tslint.json
new file mode 100644
index 0000000..d9401a9
--- /dev/null
+++ b/types/tslint.json
@@ -0,0 +1,11 @@
+{
+	"extends": "dtslint/dtslint.json",
+	"rules": {
+		"whitespace": false,
+		"no-sparse-arrays": false,
+		"only-arrow-functions": false,
+		"no-consecutive-blank-lines": false,
+		"prefer-conditional-expression": false,
+		"one-variable-per-declaration": false
+	}
+}