version bump 1.3.2

replace git.io links
version bump 1.3.1: npm minutiae
2023-12-14 00:37:22 -05:00 · 2022-04-27 01:29:21 -04:00 · 2022-01-23 23:33:44 -05:00 · 2021-08-30 17:46:24 -04:00 · 2021-08-30 00:50:54 -04:00 · 2021-08-29 22:31:43 -04:00
31 changed files with 849 additions and 202 deletions
--- a/.gitignore
+++ b/.gitignore
@ -3,3 +3,4 @@ misc/coverage.html
 ctest/sauce*
 *.sheetjs
 *.tgz
+package-lock.json
--- a/191
+++ b/191
@ -1,4 +1,192 @@
-Copyright (C) 2016-present  SheetJS
+                                 Apache License
+                           Version 2.0, January 2004
+                        http://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+   1. Definitions.
+
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+   5. Submission of Contributions. Unless You explicitly state otherwise,
+      any Contribution intentionally submitted for inclusion in the Work
+      by You to the Licensor shall be under the terms and conditions of
+      this License, without any additional terms or conditions.
+      Notwithstanding the above, nothing herein shall supersede or modify
+      the terms of any separate license agreement you may have executed
+      with Licensor regarding such Contributions.
+
+   6. Trademarks. This License does not grant permission to use the trade
+      names, trademarks, service marks, or product names of the Licensor,
+      except as required for reasonable and customary use in describing the
+      origin of the Work and reproducing the content of the NOTICE file.
+
+   7. Disclaimer of Warranty. Unless required by applicable law or
+      agreed to in writing, Licensor provides the Work (and each
+      Contributor provides its Contributions) on an "AS IS" BASIS,
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+      whether in tort (including negligence), contract, or otherwise,
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+      on Your own behalf and on Your sole responsibility, not on behalf
+      of any other Contributor, and only if You agree to indemnify,
+      defend, and hold each Contributor harmless for any liability
+      incurred by, or claims asserted against, such Contributor by reason
+      of your accepting any such warranty or additional liability.
+
+   END OF TERMS AND CONDITIONS
+
+   APPENDIX: How to apply the Apache License to your work.
+
+      To apply the Apache License to your work, attach the following
+      boilerplate notice, with the fields enclosed by brackets "{}"
+      replaced with your own identifying information. (Don't include
+      the brackets!)  The text should be enclosed in the appropriate
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+      file or class name and description of purpose be included on the
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+
+   Copyright (C) 2016-present   SheetJS LLC

   Licensed under the Apache License, Version 2.0 (the "License");
   you may not use this file except in compliance with the License.
@ -11,4 +199,3 @@ Copyright (C) 2016-present  SheetJS
   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   See the License for the specific language governing permissions and
   limitations under the License.
-
--- a/43
+++ b/43
@ -12,6 +12,13 @@ FLOWTARGET=$(LIB).flow.js
 MJSTARGET=$(LIB).mjs
 FLOWTGTS=$(TARGET) $(AUXTARGETS)
 CLOSURE=/usr/local/lib/node_modules/google-closure-compiler/compiler.jar
+UGLIFY="./node_modules/@sheetjs/uglify-js/bin/uglifyjs"
+JSCS=./node_modules/.bin/jscs
+JSHINT=./node_modules/.bin/jshint
+MOCHA=./node_modules/.bin/mocha
+ESLINT=./node_modules/.bin/eslint
+ALEX=./node_modules/.bin/alex
+MDSPELL=./node_modules/.bin/mdspell

 ## Main Targets

@ -37,18 +44,26 @@ clean: clean-stress ## Remove targets and build artifacts
 	@OUTDIR=$(PWD)/lib make -C bits clean
 	rm -f $(TARGET) $(FLOWTARGET)

+.PHONY: init
+init: ## Initial setup for development
+	npm i
+
 .PHONY: dist
 dist: $(TARGET) ## Prepare JS files for distribution
 	cp $(TARGET) dist/
 	cp LICENSE dist/
-	uglifyjs $(TARGET) -o dist/$(LIB).min.js --source-map dist/$(LIB).min.map --preamble "$$(head -n 1 bits/00_header.js)"
+	$(UGLIFY) $(TARGET) -o dist/$(LIB).min.js --source-map dist/$(LIB).min.map --preamble "$$(head -n 1 bits/00_header.js)"
 	misc/strip_sourcemap.sh dist/$(LIB).min.js

 ## Testing

 .PHONY: test mocha
 test mocha: test.js $(TARGET) ## Run test suite
-	mocha -R spec -t 20000
+	$(MOCHA) -R spec -t 20000
+
+.PHONY: test-deno
+test-deno: test.ts ## Run Deno test suite
+	deno test --check --allow-env --allow-read --allow-write --config misc/test.deno.jsonc $<

 .PHONY: ctest
 ctest: ## Build browser test (into ctest/ subdirectory)
@ -58,7 +73,7 @@ ctest: ## Build browser test (into ctest/ subdirectory)

 .PHONY: ctestserv
 ctestserv: ## Start a test server on port 8000
-	@cd ctest && python -mSimpleHTTPServer
+	@cd ctest && python -mSimpleHTTPServer || python3 -mhttp.server || npx -y http-server -p 8000 .

 .PHONY: stress
 stress: ## Run stress tests
@ -73,20 +88,20 @@ clean-stress: ## Remove stress tests
 ## Code Checking

 .PHONY: fullint
-fullint: lint old-lint tslint flow mdlint ## Run all checks
+fullint: lint old-lint tslint mdlint ## Run all checks

 .PHONY: lint
 lint: $(TARGET) ## Run eslint checks
-	@eslint --ext .js,.njs,.json,.html,.htm $(TARGET) $(AUXTARGETS) $(CMDS) $(HTMLLINT) package.json
+	@$(ESLINT) --ext .js,.njs,.json,.html,.htm $(TARGET) $(AUXTARGETS) $(CMDS) $(HTMLLINT) package.json
 	if [ -e $(CLOSURE) ]; then java -jar $(CLOSURE) $(FLOWTARGET) --jscomp_warning=reportUnknownTypes >/dev/null; fi

 .PHONY: old-lint
 old-lint: $(TARGET) ## Run jshint and jscs checks
-	@jshint --show-non-errors $(TARGET) $(AUXTARGETS)
-	@jshint --show-non-errors $(CMDS)
-	@jshint --show-non-errors package.json
-	@jshint --show-non-errors --extract=always $(HTMLLINT)
-	@jscs lib/*.js
+	@$(JSHINT) --show-non-errors $(TARGET) $(AUXTARGETS)
+	@$(JSHINT) --show-non-errors $(CMDS)
+	@$(JSHINT) --show-non-errors package.json
+	@$(JSHINT) --show-non-errors --extract=always $(HTMLLINT)
+	@$(JSCS) lib/*.js
 	if [ -e $(CLOSURE) ]; then java -jar $(CLOSURE) $(FLOWTARGET) --jscomp_warning=reportUnknownTypes >/dev/null; fi

 .PHONY: tslint
@ -102,17 +117,17 @@ flow: lint ## Run flow checker
 cov: misc/coverage.html ## Run coverage test

 misc/coverage.html: $(TARGET) test.js
-	mocha --require blanket -R html-cov -t 20000 > $@
+	$(MOCHA) --require blanket -R html-cov -t 20000 > $@

 .PHONY: coveralls
 coveralls: ## Coverage Test + Send to coveralls.io
-	mocha --require blanket --reporter mocha-lcov-reporter -t 20000 | node ./node_modules/coveralls/bin/coveralls.js
+	$(MOCHA) --require blanket --reporter mocha-lcov-reporter -t 20000 | node ./node_modules/coveralls/bin/coveralls.js

 MDLINT=README.md
 .PHONY: mdlint
 mdlint: $(MDLINT) ## Check markdown documents
-	alex $^
-	mdspell -a -n -x -r --en-us $^
+	$(ALEX) $^
+	$(MDSPELL) -a -n -x -r --en-us $^

 .PHONY: help
 help:
--- a/README.md
+++ b/README.md
@ -7,18 +7,20 @@ compliance, performance and IE6+ support.
 PRINTJ.sprintf("Hello %s!", "World");
 ```

-A self-contained specification of the printf format string is included below in [this README](#printf-format-string-specification), as well as a summary of the
+A self-contained specification of the printf format string is included below in
+[this README](#printf-format-string-specification), as well as a summary of the
 [support against various printf implementations](#support-summary)


 ## Table of Contents

 <details>
-	<summary><b>Table of Contents</b> (click to show)</summary>
+  <summary><b>Table of Contents</b> (click to show)</summary>

 <!-- toc -->

  * [Installation](#installation)
+    + [ES Module Support](#es-module-support)
  * [Usage](#usage)
  * [Testing](#testing)
  * [License](#license)
@ -74,16 +76,16 @@ A self-contained specification of the printf format string is included below in

 ## Installation

-With [npm](https://www.npmjs.org/package/printj):
+A NodeJS package is available on the SheetJS CDN:

 ```bash
-$ npm install printj
+$ npm install --save https://cdn.sheetjs.com/printj-1.3.2/printj-1.3.2.tgz
 ```

 In the browser:

 ```html
-<script src="printj.js"></script>
+<script src="https://cdn.sheetjs.com/printj-1.3.2/package/dist/printj.js"></script>
 ```

 The browser exposes a variable `PRINTJ`
@ -94,6 +96,38 @@ string with the given arguments.  Running the script with `-h` displays help.
 The script will manipulate `module.exports` if available.  This is not always
 desirable.  To prevent the behavior, define `DO_NOT_EXPORT_PRINTJ`

+### ES Module Support
+
+The bundle ships with a `printj.mjs` script that acts as an ES Module.
+
+**NodeJS**
+
+NodeJS 12+ support ES modules.  The default import uses the CommonJS script:
+
+```js
+import PRINTJ from "printj";
+```
+
+It is possible to use the ESM powered script referencing `printj.mjs` directly:
+
+```js
+import * as PRINTJ from "printj/printj.mjs"; // pull all exports
+import { sprintf } from "printj/printj.mjs"; // pull `sprintf`
+```
+
+**Browser Module Support**
+
+Chrome 61+ and Safari 11+ support module imports in the web browser.  The `.mjs`
+script can be imported from a `script type=module` block:
+
+```html
+<script type="module">
+import { sprintf } from './printj.mjs';
+console.log(sprintf("%02hhx", 123));
+</script>
+```
+
+
 ## Usage

 In all cases, the relevant function takes a format and arguments to be rendered.
@ -155,18 +189,6 @@ granted by the Apache 2.0 license are reserved by the Original Author.

 [![Build Status](https://saucelabs.com/browser-matrix/printj.svg)](https://saucelabs.com/u/printj)

-[![Build Status](https://travis-ci.org/SheetJS/printj.svg?branch=master)](https://travis-ci.org/SheetJS/printj)
-
-[![Coverage Status](http://img.shields.io/coveralls/SheetJS/printj/master.svg)](https://coveralls.io/r/SheetJS/printj?branch=master)
-
-[![NPM Downloads](https://img.shields.io/npm/dt/printj.svg)](https://npmjs.org/package/printj)
-
-[![Dependencies Status](https://david-dm.org/sheetjs/printj/status.svg)](https://david-dm.org/sheetjs/printj)
-
-[![ghit.me](https://ghit.me/badge.svg?repo=sheetjs/printj)](https://ghit.me/repo/sheetjs/printj)
-
-[![Analytics](https://ga-beacon.appspot.com/UA-36810333-1/SheetJS/printj?pixel)](https://github.com/SheetJS/printj)
-
 # printf format string specification

 The `printf` family of functions attempt to generate and output a string of
@ -595,7 +617,7 @@ lengths exceeding 32 bits, `Math.round` is appropriate.
 |------|---------------------------|-------------------------------------------|
 | 8    | `V & 0xFF`                | `V &= 0xFF; if(V > 0x7F) V-= 0x100`       |
 | 16   | `V & 0xFFFF`              | `V &= 0xFFFF; if(V > 0x7FFF) V-= 0x10000` |
-| 32   | `V >>> 0`                 | `V | 0`                                   |
+| 32   | `V >>> 0`                 | `V \| 0`                                  |
 | 64   | `Math.abs(Math.round(V))` | `Math.round(V)`                           |

 ## Length Specifiers for Integer Conversions
@ -694,10 +716,10 @@ This implementation performs the required adjustments.
 Aside from the special cases discussed above, JS `num.toExponential(prec)`
 differs from POSIX `printf("%1$.*2$e", num, prec)` in the exponent field: JS
 writes exponents with the fewest digits (POSIX requires 2+ digits).  This is
-easily fixed by inspecting the output string and inserting a "0" when needed.
+addressed by inspecting the output string and inserting a "0" when needed.

 The optional `#` flag forces the decimal point to appear when precision is 0.
-This is also easily corrected by adding a decimal point just before the "e".
+This is also fixed by adding a decimal point just before the "e".

 ## Standard Form ("f" and "F" conversions)

@ -750,7 +772,7 @@ JS `num.toString(radix)` is implementation-dependent for radices other than 10
 (`2-9, 11-36`).  IE uses hex-mantissa decimal-hex-exponent form when the
 absolute value of the base-2 exponent exceeds 60.  Otherwise, IE uses an exact
 standard hexadecimal form.  Chrome, Safari and other browsers always use the
-exact standard hexadecimal form.  Both forms are easily converted to `"%a"` by
+exact standard hexadecimal form.  Both forms are converted to `"%a"` by
 calculating and dividing by the appropriate power of 2.

 For each non-zero normal floating point value, there are 4 acceptable strings
@ -900,7 +922,7 @@ In all forms other than `"%m"`, an argument will be processed as follows:
 - If the `errno` field is set, emit "Error number " followed by the errno
 - Otherwise emit "Error " followed by the error interpreted as a String

-```
+```js
 var x = new Error("sheetjs");
 x.errno = 69; x.toString = function() { return "SHEETJS"; };
 printf("|%#m|", x);      // |sheetjs|
@ -962,7 +984,7 @@ Width, precision and other flags are ignored.
 Under the "T" conversion, the result of `typeof arg` is rendered.  If the `#`
 flag is specified, the type is derived from `Object.prototype.toString`:

-```
+```js
 printf("%1$T %1$#T", 1);          // 'number Number'
 printf("%1$T %1$#T", 'foo');      // 'string String'
 printf("%1$T %1$#T", [1,2,3]);    // 'object Array'
@ -972,7 +994,7 @@ printf("%1$T %1$#T", undefined);  // 'undefined Undefined'

 Under the "V" conversion, the result of `arg.valueOf()` is rendered:

-```
+```js
 var _f = function() { return "f"; };
 var _3 = function() { return 3; };
 printf("%1$d %1$s %1$V", {toString:_f});               // '0 f f'
--- a/bin/printj.njs
+++ b/bin/printj.njs
@ -1,8 +1,9 @@
 #!/usr/bin/env node
-/* printj.js (C) 2016-present SheetJS -- http://sheetjs.com */
+/* printj.js (C) 2016-present SheetJS -- https://sheetjs.com */
 /* eslint-env node */
 /* vim: set ts=2 ft=javascript: */
 /*jshint node:true, evil:true */
+require("../shim");
 var X = require("../"), argv = process.argv;

 function help() {
@ -27,8 +28,7 @@ function help() {
 "    $ printj '|%s is %s|' s:1+2 e:1+2                # |1+2 is 3|",
 "    $ printj '|%c %c|' s:69 n:69                     # |6 E|",
 "",
-"Support email: dev@sheetjs.com",
-"Web Demo: http://oss.sheetjs.com/printj/"
+"Web Demo: https://oss.sheetjs.com/printj/"
 ].forEach(function(l) { console.log(l); });
 	return 0;
 }
--- a/bits/01_version.js
+++ b/bits/01_version.js
@ -1 +1 @@
-PRINTJ.version = '1.2.1';
+PRINTJ.version = '1.3.2';
--- a/bits/10_tokenize.js
+++ b/bits/10_tokenize.js
@ -4,8 +4,11 @@
 #define GETCHAR c = fmt.charCodeAt(i);
 #endif

+var tcache = {};
+
 #define DRAIN(idx) if(start < idx) out.push(["L", fmt.substring(start, idx)]);
 function tokenize(fmt/*:string*/)/*:ParsedFmt*/ {
+	if(tcache[fmt]) return tcache[fmt];
 	var out/*:ParsedFmt*/ = [];
 	var start/*:number*/ = 0;

@ -16,7 +19,7 @@ function tokenize(fmt/*:string*/)/*:ParsedFmt*/ {
 		DRAIN(m.index)
 		start = m.index + m[0].length;
 		if(m[0] === "%%") out.push(["%","%"]);
-		else out.push([m[6], m[0], m[1], m[2], m[3], m[4], m[5]]);
+		else out.push([m[6], m[0]||"", m[1]||"", m[2]||"", m[3]||"", m[4]||"", m[5]||""]);
 	}

 #else /* NOT USE_REGEX */
@ -74,5 +77,5 @@ function tokenize(fmt/*:string*/)/*:ParsedFmt*/ {
 #endif /* USE_REGEX */

 	if(start < fmt.length) out.push(["L", fmt.substring(start)]);
-	return out;
+	return (tcache[fmt] = out);
 }
--- a/bits/50_doit.js
+++ b/bits/50_doit.js
@ -8,9 +8,11 @@ var u_inspect/*:(o:any)=>string*/ = JSON.stringify;
 if(typeof process !== 'undefined' && !!process.versions && !!process.versions.node) util=require("util");
 var u_inspect/*:(o:any)=>string*/ = (typeof util != 'undefined') ? util.inspect : JSON.stringify;
 #endif
+function set_inspect(inspect) { u_inspect = inspect; }

 function doit(t/*:ParsedFmt*/, args/*:Array<any>*/)/*:string*/ {
-	var o/*:Array<string>*/ = [];
+	//var o/*:Array<string>*/ = [];
+	var o = "";
 	var argidx/*:number*/ = 0, idx/*:number*/ = 0;
 	var Vnum/*:number*/ = 0;
 	var pad/*:string*/ = "";
@ -18,24 +20,24 @@ function doit(t/*:ParsedFmt*/, args/*:Array<any>*/)/*:string*/ {
 		var m/*:ParsedEntry*/ = t[i], c/*:number*/ = (m[0]/*:string*/).charCodeAt(0);
 		/* m order: conv full param flags width prec length */

-		if(c === /*L*/ 76) { o.push(m[1]); continue; }
-		if(c === /*%*/ 37) { o.push("%"); continue; }
+		if(c === /*L*/ 76) { o += /*o.push*/(m[1]); continue; }
+		if(c === /*%*/ 37) { o += /*o.push*/("%"); continue; }

 		var O/*:string*/ = "";
 		var isnum/*:number*/ = 0, radix/*:number*/ = 10, bytes/*:number*/ = SIZEOF_INT, sign/*:boolean*/ = false;

 		/* flags */
-		var flags/*:string*/ = m[IDX_FLAGS]||"";
+		var flags/*:string*/ = m[IDX_FLAGS]/*||""*/;
 		var alt/*:boolean*/ = flags.indexOf("#") > -1;

 		/* position */
-		if(m[IDX_POS]) argidx = parseInt(m[IDX_POS])-1;
+		if(m[IDX_POS]) argidx = parseInt(m[IDX_POS], 10)-1;
 		/* %m special case */
-		else if(c === /*m*/ 109 && !alt) { o.push("Success"); continue; }
+		else if(c === /*m*/ 109 && !alt) { o += /*.push*/("Success"); continue; }

 #define GRAB_INT(NAME, IDX, DFL) \
 		var NAME/*:number*/ = DFL; \
-		if(m[IDX] != null && m[IDX].length > 0) { \
+		if(/*m[IDX] != null &&*/ m[IDX].length > 0) { \
 			if(m[IDX].charAt(0) !== '*') NAME = parseInt(m[IDX], 10); \
 			else if(m[IDX].length === 1) NAME = args[idx++]; \
 			else NAME = args[parseInt(m[IDX].substr(1), 10)-1]; \
@ -54,7 +56,7 @@ function doit(t/*:ParsedFmt*/, args/*:Array<any>*/)/*:string*/ {
 		var arg/*:any*/ = args[argidx];

 		/* grab length */
-		var len/*:string*/ = m[IDX_LEN] || "";
+		var len/*:string*/ = m[IDX_LEN]/* || ""*/;

 #define INT isnum = -1
 #define SGN(s) sign = s
@ -81,7 +83,7 @@ function doit(t/*:ParsedFmt*/, args/*:Array<any>*/)/*:string*/ {
 #include "70_float.js"
 		}

-		o.push(O);
+		o += /*.push*/(O);
 	}
-	return o.join("");
+	return o/*.join("")*/;
 }
--- a/bits/54_convmisc.js
+++ b/bits/54_convmisc.js
@ -11,7 +11,8 @@

 			/* store length in the `len` key */
 			case /*n*/ 110:
-				if(arg) { arg.len=0; for(var oo/*:number*/ = 0; oo < o.length; ++oo) arg.len += o[oo].length; }
+				if(arg) { arg.len = o.length; }
+				//if(arg) { arg.len=0; for(var oo/*:number*/ = 0; oo < o.length; ++oo) arg.len += o[oo].length; }
 				continue;

 			/* process error */
--- a/bits/90_exports.js
+++ b/bits/90_exports.js
@ -2,3 +2,4 @@ PRINTJ.sprintf = sprintf;
 PRINTJ.vsprintf = vsprintf;
 PRINTJ._doit = doit;
 PRINTJ._tokenize = tokenize;
+PRINTJ.set_inspect = set_inspect;
--- a/bits/99_esmfoot.js
+++ b/bits/99_esmfoot.js
@ -1 +1 @@
-export { sprintf, vsprintf };
+export { sprintf, vsprintf, set_inspect };
--- a/ctest/printj.js
+++ b/ctest/printj.js
@ -25,9 +25,12 @@ var PRINTJ;
 	/*jshint ignore:end */
 }(function(PRINTJ) {

-PRINTJ.version = '1.2.1';
+PRINTJ.version = '1.3.2';
+
+var tcache = {};

 function tokenize(fmt) {
+	if(tcache[fmt]) return tcache[fmt];
 	var out = [];
 	var start = 0;

@ -146,15 +149,18 @@ function tokenize(fmt) {
 	}

 	if(start < fmt.length) out.push(["L", fmt.substring(start)]);
-	return out;
+	return (tcache[fmt] = out);
 }

 /*global process:true, util:true, require:true */
 if(typeof process !== 'undefined' && !!process.versions && !!process.versions.node) util=require("util");
 var u_inspect = (typeof util != 'undefined') ? util.inspect : JSON.stringify;

+function set_inspect(inspect) { u_inspect = inspect; }
+
 function doit(t, args) {
-	var o = [];
+	//var o = [];
+	var o = "";
 	var argidx = 0, idx = 0;
 	var Vnum = 0;
 	var pad = "";
@ -162,26 +168,26 @@ function doit(t, args) {
 		var m = t[i], c = (m[0]).charCodeAt(0);
 		/* m order: conv full param flags width prec length */

-		if(c === /*L*/ 76) { o.push(m[1]); continue; }
-		if(c === /*%*/ 37) { o.push("%"); continue; }
+		if(c === /*L*/ 76) { o += /*o.push*/(m[1]); continue; }
+		if(c === /*%*/ 37) { o += /*o.push*/("%"); continue; }

 		var O = "";
 		var isnum = 0, radix = 10, bytes = 4, sign = false;

 		/* flags */
-		var flags = m[3]||"";
+		var flags = m[3]/*||""*/;
 		var alt = flags.indexOf("#") > -1;

 		/* position */
-		if(m[2]) argidx = parseInt(m[2])-1;
+		if(m[2]) argidx = parseInt(m[2], 10)-1;
 		/* %m special case */
-		else if(c === /*m*/ 109 && !alt) { o.push("Success"); continue; }
+		else if(c === /*m*/ 109 && !alt) { o += /*.push*/("Success"); continue; }

 		/* grab width */
-		var width =  0; if(m[ 4] != null && m[ 4].length > 0) { if(m[ 4].charAt(0) !== '*') width = parseInt(m[ 4], 10); else if(m[ 4].length === 1) width = args[idx++]; else width = args[parseInt(m[ 4].substr(1), 10)-1]; }
+		var width =  0; if( m[ 4].length > 0) { if(m[ 4].charAt(0) !== '*') width = parseInt(m[ 4], 10); else if(m[ 4].length === 1) width = args[idx++]; else width = args[parseInt(m[ 4].substr(1), 10)-1]; }

 		/* grab precision */
-		var prec =  -1; if(m[ 5] != null && m[ 5].length > 0) { if(m[ 5].charAt(0) !== '*') prec = parseInt(m[ 5], 10); else if(m[ 5].length === 1) prec = args[idx++]; else prec = args[parseInt(m[ 5].substr(1), 10)-1]; }
+		var prec =  -1; if( m[ 5].length > 0) { if(m[ 5].charAt(0) !== '*') prec = parseInt(m[ 5], 10); else if(m[ 5].length === 1) prec = args[idx++]; else prec = args[parseInt(m[ 5].substr(1), 10)-1]; }

 		/* position not specified */
 		if(!m[2]) argidx = idx++;
@ -190,7 +196,7 @@ function doit(t, args) {
 		var arg = args[argidx];

 		/* grab length */
-		var len = m[6] || "";
+		var len = m[6]/* || ""*/;

 		switch(c) {
 			/* str cCsS */
@ -276,7 +282,8 @@ function doit(t, args) {

 			/* store length in the `len` key */
 			case /*n*/ 110:
-				if(arg) { arg.len=0; for(var oo = 0; oo < o.length; ++oo) arg.len += o[oo].length; }
+				if(arg) { arg.len = o.length; }
+				//if(arg) { arg.len=0; for(var oo = 0; oo < o.length; ++oo) arg.len += o[oo].length; }
 				continue;

 			/* process error */
@ -575,9 +582,9 @@ function doit(t, args) {

 		}

-		o.push(O);
+		o += /*.push*/(O);
 	}
-	return o.join("");
+	return o/*.join("")*/;
 }

 function vsprintf(fmt, args) { return doit(tokenize(fmt), args); }
@ -592,6 +599,6 @@ PRINTJ.sprintf = sprintf;
 PRINTJ.vsprintf = vsprintf;
 PRINTJ._doit = doit;
 PRINTJ._tokenize = tokenize;
-
+PRINTJ.set_inspect = set_inspect;
 }));

--- a/ctest/test.js
+++ b/ctest/test.js
@ -1,8 +1,11 @@
 /* vim: set ts=2: */
+/* eslint-env mocha */
+/*global assert:true */
 var X;
 var IMPLS = {}, IMPLA = [], IMPL = [];
 if(typeof require !== 'undefined') {
 	assert = require('assert');
+	require('./shim');
 	X=require('./');
 	IMPL = require("./lib/impl.json");
 	IMPL.forEach(function(impl, i) { IMPLS[impl] = IMPLA[i] = require("./lib/" + impl); });
@ -171,6 +174,13 @@ describe('special cases', function() {
 		assert.equal(sprintf("|%1$b|%1$B|%1$d|%1$D|%1$i|%1$o|%1$O|%1$u|%1$U|%1$x|%1$X|", undefined), "|0|0|0|0|0|0|0|0|0|0|0|");
 		assert.equal(sprintf("|%1$b|%1$B|%1$d|%1$D|%1$i|%1$o|%1$O|%1$u|%1$U|%1$x|%1$X|", null), "|0|0|0|0|0|0|0|0|0|0|0|");
 	});
+	if(typeof JSON !== "undefined") it('correctly handles JSON conversion: J', function() {
+		var data = ({a:1});
+		assert.equal(sprintf("%J", data), JSON.stringify(data));
+		X.set_inspect(function(data) { return "|" + JSON.stringify(data) + "|"; });
+		assert.equal(sprintf("%J", data), JSON.stringify(data));
+		assert.equal(sprintf("%#J", data), "|" + JSON.stringify(data) + "|");
+	});
 	it('handles dynamic specifiers', function() {
 		assert.equal(sprintf("|%5s|", "sheetjs"), "|sheetjs|");
 		assert.equal(sprintf("|%*s|", 5, "sheetjs"), "|sheetjs|");
--- a/dist/LICENSE
+++ b/dist/LICENSE
@ -1,4 +1,192 @@
-Copyright (C) 2016-present  SheetJS
+                                 Apache License
+                           Version 2.0, January 2004
+                        http://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+   1. Definitions.
+
+      "License" shall mean the terms and conditions for use, reproduction,
+      and distribution as defined by Sections 1 through 9 of this document.
+
+      "Licensor" shall mean the copyright owner or entity authorized by
+      the copyright owner that is granting the License.
+
+      "Legal Entity" shall mean the union of the acting entity and all
+      other entities that control, are controlled by, or are under common
+      control with that entity. For the purposes of this definition,
+      "control" means (i) the power, direct or indirect, to cause the
+      direction or management of such entity, whether by contract or
+      otherwise, or (ii) ownership of fifty percent (50%) or more of the
+      outstanding shares, or (iii) beneficial ownership of such entity.
+
+      "You" (or "Your") shall mean an individual or Legal Entity
+      exercising permissions granted by this License.
+
+      "Source" form shall mean the preferred form for making modifications,
+      including but not limited to software source code, documentation
+      source, and configuration files.
+
+      "Object" form shall mean any form resulting from mechanical
+      transformation or translation of a Source form, including but
+      not limited to compiled object code, generated documentation,
+      and conversions to other media types.
+
+      "Work" shall mean the work of authorship, whether in Source or
+      Object form, made available under the License, as indicated by a
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+      (an example is provided in the Appendix below).
+
+      "Derivative Works" shall mean any work, whether in Source or Object
+      form, that is based on (or derived from) the Work and for which the
+      editorial revisions, annotations, elaborations, or other modifications
+      represent, as a whole, an original work of authorship. For the purposes
+      of this License, Derivative Works shall not include works that remain
+      separable from, or merely link (or bind by name) to the interfaces of,
+      the Work and Derivative Works thereof.
+
+      "Contribution" shall mean any work of authorship, including
+      the original version of the Work and any modifications or additions
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+
+      "Contributor" shall mean Licensor and any individual or Legal Entity
+      on behalf of whom a Contribution has been received by Licensor and
+      subsequently incorporated within the Work.
+
+   2. Grant of Copyright License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      copyright license to reproduce, prepare Derivative Works of,
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+   3. Grant of Patent License. Subject to the terms and conditions of
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+      meet the following conditions:
+
+      (a) You must give any other recipients of the Work or
+          Derivative Works a copy of this License; and
+
+      (b) You must cause any modified files to carry prominent notices
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+
+      (c) You must retain, in the Source form of any Derivative Works
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+
+      (d) If the Work includes a "NOTICE" text file as part of its
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+          of the NOTICE file are for informational purposes only and
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+          notices within Derivative Works that You distribute, alongside
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+
+      You may add Your own copyright statement to Your modifications and
+      may provide additional or different license terms and conditions
+      for use, reproduction, or distribution of Your modifications, or
+      for any such Derivative Works as a whole, provided Your use,
+      reproduction, and distribution of the Work otherwise complies with
+      the conditions stated in this License.
+
+   5. Submission of Contributions. Unless You explicitly state otherwise,
+      any Contribution intentionally submitted for inclusion in the Work
+      by You to the Licensor shall be under the terms and conditions of
+      this License, without any additional terms or conditions.
+      Notwithstanding the above, nothing herein shall supersede or modify
+      the terms of any separate license agreement you may have executed
+      with Licensor regarding such Contributions.
+
+   6. Trademarks. This License does not grant permission to use the trade
+      names, trademarks, service marks, or product names of the Licensor,
+      except as required for reasonable and customary use in describing the
+      origin of the Work and reproducing the content of the NOTICE file.
+
+   7. Disclaimer of Warranty. Unless required by applicable law or
+      agreed to in writing, Licensor provides the Work (and each
+      Contributor provides its Contributions) on an "AS IS" BASIS,
+      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+      implied, including, without limitation, any warranties or conditions
+      of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
+      PARTICULAR PURPOSE. You are solely responsible for determining the
+      appropriateness of using or redistributing the Work and assume any
+      risks associated with Your exercise of permissions under this License.
+
+   8. Limitation of Liability. In no event and under no legal theory,
+      whether in tort (including negligence), contract, or otherwise,
+      unless required by applicable law (such as deliberate and grossly
+      negligent acts) or agreed to in writing, shall any Contributor be
+      liable to You for damages, including any direct, indirect, special,
+      incidental, or consequential damages of any character arising as a
+      result of this License or out of the use or inability to use the
+      Work (including but not limited to damages for loss of goodwill,
+      work stoppage, computer failure or malfunction, or any and all
+      other commercial damages or losses), even if such Contributor
+      has been advised of the possibility of such damages.
+
+   9. Accepting Warranty or Additional Liability. While redistributing
+      the Work or Derivative Works thereof, You may choose to offer,
+      and charge a fee for, acceptance of support, warranty, indemnity,
+      or other liability obligations and/or rights consistent with this
+      License. However, in accepting such obligations, You may act only
+      on Your own behalf and on Your sole responsibility, not on behalf
+      of any other Contributor, and only if You agree to indemnify,
+      defend, and hold each Contributor harmless for any liability
+      incurred by, or claims asserted against, such Contributor by reason
+      of your accepting any such warranty or additional liability.
+
+   END OF TERMS AND CONDITIONS
+
+   APPENDIX: How to apply the Apache License to your work.
+
+      To apply the Apache License to your work, attach the following
+      boilerplate notice, with the fields enclosed by brackets "{}"
+      replaced with your own identifying information. (Don't include
+      the brackets!)  The text should be enclosed in the appropriate
+      comment syntax for the file format. We also recommend that a
+      file or class name and description of purpose be included on the
+      same "printed page" as the copyright notice for easier
+      identification within third-party archives.
+
+   Copyright (C) 2016-present   SheetJS LLC

   Licensed under the Apache License, Version 2.0 (the "License");
   you may not use this file except in compliance with the License.
@ -11,4 +199,3 @@ Copyright (C) 2016-present  SheetJS
   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   See the License for the specific language governing permissions and
   limitations under the License.
-
--- a/dist/printj.js
+++ b/dist/printj.js
@ -25,9 +25,12 @@ var PRINTJ;
 	/*jshint ignore:end */
 }(function(PRINTJ) {

-PRINTJ.version = '1.1.2';
+PRINTJ.version = '1.3.2';
+
+var tcache = {};

 function tokenize(fmt) {
+	if(tcache[fmt]) return tcache[fmt];
 	var out = [];
 	var start = 0;

@ -146,23 +149,18 @@ function tokenize(fmt) {
 	}

 	if(start < fmt.length) out.push(["L", fmt.substring(start)]);
-	return out;
+	return (tcache[fmt] = out);
 }

-//#define PAD_(x,c) (x >= 0 ? new Array(((x)|0) + 1).join((c)) : "")
-var padstr = {
-	" ": "                                 ",
-	"0": "000000000000000000000000000000000",
-	"7": "777777777777777777777777777777777",
-	"f": "fffffffffffffffffffffffffffffffff"
-};
-
 /*global process:true, util:true, require:true */
 if(typeof process !== 'undefined' && !!process.versions && !!process.versions.node) util=require("util");
 var u_inspect = (typeof util != 'undefined') ? util.inspect : JSON.stringify;

+function set_inspect(inspect) { u_inspect = inspect; }
+
 function doit(t, args) {
-	var o = [];
+	//var o = [];
+	var o = "";
 	var argidx = 0, idx = 0;
 	var Vnum = 0;
 	var pad = "";
@ -170,26 +168,26 @@ function doit(t, args) {
 		var m = t[i], c = (m[0]).charCodeAt(0);
 		/* m order: conv full param flags width prec length */

-		if(c === /*L*/ 76) { o.push(m[1]); continue; }
-		if(c === /*%*/ 37) { o.push("%"); continue; }
+		if(c === /*L*/ 76) { o += /*o.push*/(m[1]); continue; }
+		if(c === /*%*/ 37) { o += /*o.push*/("%"); continue; }

 		var O = "";
 		var isnum = 0, radix = 10, bytes = 4, sign = false;

 		/* flags */
-		var flags = m[3]||"";
+		var flags = m[3]/*||""*/;
 		var alt = flags.indexOf("#") > -1;

 		/* position */
-		if(m[2]) argidx = parseInt(m[2])-1;
+		if(m[2]) argidx = parseInt(m[2], 10)-1;
 		/* %m special case */
-		else if(c === /*m*/ 109 && !alt) { o.push("Success"); continue; }
+		else if(c === /*m*/ 109 && !alt) { o += /*.push*/("Success"); continue; }

 		/* grab width */
-		var width =  0; if(m[ 4] != null && m[ 4].length > 0) { if(m[ 4].charAt(0) !== '*') width = parseInt(m[ 4], 10); else if(m[ 4].length === 1) width = args[idx++]; else width = args[parseInt(m[ 4].substr(1), 10)-1]; }
+		var width =  0; if( m[ 4].length > 0) { if(m[ 4].charAt(0) !== '*') width = parseInt(m[ 4], 10); else if(m[ 4].length === 1) width = args[idx++]; else width = args[parseInt(m[ 4].substr(1), 10)-1]; }

 		/* grab precision */
-		var prec =  -1; if(m[ 5] != null && m[ 5].length > 0) { if(m[ 5].charAt(0) !== '*') prec = parseInt(m[ 5], 10); else if(m[ 5].length === 1) prec = args[idx++]; else prec = args[parseInt(m[ 5].substr(1), 10)-1]; }
+		var prec =  -1; if( m[ 5].length > 0) { if(m[ 5].charAt(0) !== '*') prec = parseInt(m[ 5], 10); else if(m[ 5].length === 1) prec = args[idx++]; else prec = args[parseInt(m[ 5].substr(1), 10)-1]; }

 		/* position not specified */
 		if(!m[2]) argidx = idx++;
@ -198,7 +196,7 @@ function doit(t, args) {
 		var arg = args[argidx];

 		/* grab length */
-		var len = m[6] || "";
+		var len = m[6]/* || ""*/;

 		switch(c) {
 			/* str cCsS */
@ -208,7 +206,7 @@ function doit(t, args) {
 				/* only valid flag is "-" for left justification */
 				O = String(arg);
 				if( prec >= 0) O = O.substr(0,  prec);
-				if( width > O.length || - width > O.length) { if(( flags.indexOf("-") == -1 ||  width < 0) &&  flags.indexOf("0") != -1) { pad = ( width - O.length >= 0 ? padstr["0"].substr(0, width - O.length) : ""); O = pad + O; } else { pad = ( width - O.length >= 0 ? padstr[" "].substr(0, width - O.length) : ""); O =  flags.indexOf("-") > -1 ? O + pad : pad + O; } }
+				if( width > O.length || - width > O.length) { if(( flags.indexOf("-") == -1 ||  width < 0) &&  flags.indexOf("0") != -1) { pad = ( width - O.length >= 0 ? "0".repeat( width - O.length) : ""); O = pad + O; } else { pad = ( width - O.length >= 0 ? " ".repeat( width - O.length) : ""); O =  flags.indexOf("-") > -1 ? O + pad : pad + O; } }
 				break;

 			/* first char of string or convert */
@ -223,7 +221,7 @@ function doit(t, args) {
 					case "string": O = arg.charAt(0); break;
 					default: O = String(arg).charAt(0);
 				}
-				if( width > O.length || - width > O.length) { if(( flags.indexOf("-") == -1 ||  width < 0) &&  flags.indexOf("0") != -1) { pad = ( width - O.length >= 0 ? padstr["0"].substr(0, width - O.length) : ""); O = pad + O; } else { pad = ( width - O.length >= 0 ? padstr[" "].substr(0, width - O.length) : ""); O =  flags.indexOf("-") > -1 ? O + pad : pad + O; } }
+				if( width > O.length || - width > O.length) { if(( flags.indexOf("-") == -1 ||  width < 0) &&  flags.indexOf("0") != -1) { pad = ( width - O.length >= 0 ? "0".repeat( width - O.length) : ""); O = pad + O; } else { pad = ( width - O.length >= 0 ? " ".repeat( width - O.length) : ""); O =  flags.indexOf("-") > -1 ? O + pad : pad + O; } }
 				break;

 			/* int diDuUoOxXbB */
@ -284,7 +282,8 @@ function doit(t, args) {

 			/* store length in the `len` key */
 			case /*n*/ 110:
-				if(arg) { arg.len=0; for(var oo = 0; oo < o.length; ++oo) arg.len += o[oo].length; }
+				if(arg) { arg.len = o.length; }
+				//if(arg) { arg.len=0; for(var oo = 0; oo < o.length; ++oo) arg.len += o[oo].length; }
 				continue;

 			/* process error */
@ -308,10 +307,10 @@ function doit(t, args) {
 			/* boolean (extension) */
 			case /*Y*/  89:
 			case /*y*/ 121:
-				O = Boolean(arg) ? (alt ? "yes" : "true") : (alt ? "no" : "false");
+				O = (arg) ? (alt ? "yes" : "true") : (alt ? "no" : "false");
 				if(c == /*Y*/ 89) O = O.toUpperCase();
 				if( prec >= 0) O = O.substr(0,  prec);
-				if( width > O.length || - width > O.length) { if(( flags.indexOf("-") == -1 ||  width < 0) &&  flags.indexOf("0") != -1) { pad = ( width - O.length >= 0 ? padstr["0"].substr(0, width - O.length) : ""); O = pad + O; } else { pad = ( width - O.length >= 0 ? padstr[" "].substr(0, width - O.length) : ""); O =  flags.indexOf("-") > -1 ? O + pad : pad + O; } }
+				if( width > O.length || - width > O.length) { if(( flags.indexOf("-") == -1 ||  width < 0) &&  flags.indexOf("0") != -1) { pad = ( width - O.length >= 0 ? "0".repeat( width - O.length) : ""); O = pad + O; } else { pad = ( width - O.length >= 0 ? " ".repeat( width - O.length) : ""); O =  flags.indexOf("-") > -1 ? O + pad : pad + O; } }
 				break;

 		}
@ -373,16 +372,16 @@ function doit(t, args) {
 				if(radix == 16 || radix == -16) {
 					O = (Vnum>>>0).toString(16);
 					Vnum = Math.floor((Vnum - (Vnum >>> 0)) / Math.pow(2,32));
-					O = (Vnum>>>0).toString(16) + (8 - O.length >= 0 ? padstr[ "0"].substr(0,8 - O.length) : "") + O;
-					O = (16 - O.length >= 0 ? padstr[ "f"].substr(0,16 - O.length) : "") + O;
+					O = (Vnum>>>0).toString(16) + (8 - O.length >= 0 ?  "0".repeat(8 - O.length) : "") + O;
+					O = (16 - O.length >= 0 ?  "f".repeat(16 - O.length) : "") + O;
 					if(radix == 16) O = O.toUpperCase();
 				} else if(radix == 8) {
 					O = (Vnum>>>0).toString(8);
-					O = (10 - O.length >= 0 ? padstr[ "0"].substr(0,10 - O.length) : "") + O;
+					O = (10 - O.length >= 0 ?  "0".repeat(10 - O.length) : "") + O;
 					Vnum = Math.floor((Vnum - ((Vnum >>> 0)&0x3FFFFFFF)) / Math.pow(2,30));
 					O = (Vnum>>>0).toString(8) + O.substr(O.length - 10);
 					O = O.substr(O.length - 20);
-					O = "1" + (21 - O.length >= 0 ? padstr[ "7"].substr(0,21 - O.length) : "") + O;
+					O = "1" + (21 - O.length >= 0 ?  "7".repeat(21 - O.length) : "") + O;
 				} else {
 					Vnum = (-Vnum) % 1e16;
 					var d1 = [1,8,4,4,6,7,4,4,0,7,3,7,0,9,5,5,1,6,1,6];
@ -403,8 +402,8 @@ function doit(t, args) {
 			if(prec ===0 && O == "0" && !(radix == 8 && alt)) O = ""; /* bail out */
 			else {
 				if(O.length < prec + (O.substr(0,1) == "-" ? 1 : 0)) {
-					if(O.substr(0,1) != "-") O = (prec - O.length >= 0 ? padstr[ "0"].substr(0,prec - O.length) : "") + O;
-					else O = O.substr(0,1) + (prec + 1 - O.length >= 0 ? padstr[ "0"].substr(0,prec + 1 - O.length) : "") + O.substr(1);
+					if(O.substr(0,1) != "-") O = (prec - O.length >= 0 ?  "0".repeat(prec - O.length) : "") + O;
+					else O = O.substr(0,1) + (prec + 1 - O.length >= 0 ?  "0".repeat(prec + 1 - O.length) : "") + O.substr(1);
 				}

 				/* add prefix for # form */
@ -425,10 +424,10 @@ function doit(t, args) {
 			if(width > 0) {
 				if(O.length < width) {
 					if(flags.indexOf("-") > -1) {
-						O = O + ((width - O.length) >= 0 ? padstr[ " "].substr(0,(width - O.length)) : "");
+						O = O + ((width - O.length) >= 0 ?  " ".repeat((width - O.length)) : "");
 					} else if(flags.indexOf("0") > -1 && prec < 0 && O.length > 0) {
-						if(prec > O.length) O = ((prec - O.length) >= 0 ? padstr[ "0"].substr(0,(prec - O.length)) : "") + O;
-						pad = ((width - O.length) >= 0 ? padstr[ (prec > 0 ? " " : "0")].substr(0,(width - O.length)) : "");
+						if(prec > O.length) O = ((prec - O.length) >= 0 ?  "0".repeat((prec - O.length)) : "") + O;
+						pad = ((width - O.length) >= 0 ?  (prec > 0 ? " " : "0").repeat((width - O.length)) : "");
 						if(O.charCodeAt(0) < 48) {
 							if(O.charAt(2).toLowerCase() == "x") O = O.substr(0,3) + pad + O.substring(3);
 							else O = O.substr(0,1) + pad + O.substring(1);
@ -436,7 +435,7 @@ function doit(t, args) {
 						else if(O.charAt(1).toLowerCase() == "x") O = O.substr(0,2) + pad + O.substring(2);
 						else O = pad + O;
 					} else {
-						O = ((width - O.length) >= 0 ? padstr[ " "].substr(0,(width - O.length)) : "") + O;
+						O = ((width - O.length) >= 0 ?  " ".repeat((width - O.length)) : "") + O;
 					}
 				}
 			}
@ -483,8 +482,8 @@ function doit(t, args) {
 						O = Vnum.toExponential(20);
 						E = +O.substr(O.indexOf("e")+1);
 						O = O.charAt(0) + O.substr(2,O.indexOf("e")-2);
-						O = O + (E - O.length + 1 >= 0 ? padstr[ "0"].substr(0,E - O.length + 1) : "");
-						if(alt || (prec > 0 && isnum !== 11)) O = O + "." + (prec >= 0 ? padstr[ "0"].substr(0,prec) : "");
+						O = O + (E - O.length + 1 >= 0 ?  "0".repeat(E - O.length + 1) : "");
+						if(alt || (prec > 0 && isnum !== 11)) O = O + "." + (prec >= 0 ?  "0".repeat(prec) : "");
 						break;

 					/* e/E exponential */
@ -498,7 +497,7 @@ function doit(t, args) {

 					/* a/A hex */
 					case 4:
-						if(Vnum===0){O= "0x0"+((alt||prec>0)?"."+(prec >= 0 ? padstr["0"].substr(0,prec) : ""):"")+"p+0"; break;}
+						if(Vnum===0){O= "0x0"+((alt||prec>0)?"."+(prec >= 0 ? "0".repeat(prec) : ""):"")+"p+0"; break;}
 						O = Vnum.toString(16);
 						/* First char 0-9 */
 						var ac = O.charCodeAt(0);
@ -545,11 +544,11 @@ function doit(t, args) {
 							if(prec > 0) {
 								O = O.substr(0, prec + 2);
 								if(O.length < prec + 2) {
-									if(O.charCodeAt(0) < 48) O = O.charAt(0) + ((prec + 2 - O.length) >= 0 ? padstr[ "0"].substr(0,(prec + 2 - O.length)) : "") + O.substr(1);
-									else O += ((prec + 2 - O.length) >= 0 ? padstr[ "0"].substr(0,(prec + 2 - O.length)) : "");
+									if(O.charCodeAt(0) < 48) O = O.charAt(0) + ((prec + 2 - O.length) >= 0 ?  "0".repeat((prec + 2 - O.length)) : "") + O.substr(1);
+									else O += ((prec + 2 - O.length) >= 0 ?  "0".repeat((prec + 2 - O.length)) : "");
 								}
 							} else if(prec === 0) O = O.charAt(0) + (alt ? "." : "");
-						} else if(prec > 0) O = O + "." + (prec >= 0 ? padstr["0"].substr(0,prec) : "");
+						} else if(prec > 0) O = O + "." + (prec >= 0 ? "0".repeat(prec) : "");
 						else if(alt) O = O + ".";
 						O = "0x" + O + "p" + (E>=0 ? "+" + E : E);
 						break;
@ -566,9 +565,9 @@ function doit(t, args) {
 			/* width */
 			if(width > O.length) {
 				if(flags.indexOf("-") > -1) {
-					O = O + ((width - O.length) >= 0 ? padstr[ " "].substr(0,(width - O.length)) : "");
+					O = O + ((width - O.length) >= 0 ?  " ".repeat((width - O.length)) : "");
 				} else if(flags.indexOf("0") > -1 && O.length > 0 && isf) {
-					pad = ((width - O.length) >= 0 ? padstr[ "0"].substr(0,(width - O.length)) : "");
+					pad = ((width - O.length) >= 0 ?  "0".repeat((width - O.length)) : "");
 					if(O.charCodeAt(0) < 48) {
 						if(O.charAt(2).toLowerCase() == "x") O = O.substr(0,3) + pad + O.substring(3);
 						else O = O.substr(0,1) + pad + O.substring(1);
@ -576,16 +575,16 @@ function doit(t, args) {
 					else if(O.charAt(1).toLowerCase() == "x") O = O.substr(0,2) + pad + O.substring(2);
 					else O = pad + O;
 				} else {
-					O = ((width - O.length) >= 0 ? padstr[ " "].substr(0,(width - O.length)) : "") + O;
+					O = ((width - O.length) >= 0 ?  " ".repeat((width - O.length)) : "") + O;
 				}
 			}
 			if(c < 96) O = O.toUpperCase();

 		}

-		o.push(O);
+		o += /*.push*/(O);
 	}
-	return o.join("");
+	return o/*.join("")*/;
 }

 function vsprintf(fmt, args) { return doit(tokenize(fmt), args); }
@ -600,6 +599,6 @@ PRINTJ.sprintf = sprintf;
 PRINTJ.vsprintf = vsprintf;
 PRINTJ._doit = doit;
 PRINTJ._tokenize = tokenize;
-
+PRINTJ.set_inspect = set_inspect;
 }));

--- a/dist/printj.min.js
+++ b/dist/printj.min.js
--- a/dist/printj.min.map
+++ b/dist/printj.min.map
--- a/index.html
+++ b/index.html
@ -14,8 +14,8 @@ table, td {
 </head>
 <body>
 <b>PRINTJ Live Demo</b><br />
-<a href="https://git.io/printj">Source Code Repo</a><br />
-<a href="https://git.io/printj_issues">Issues?  Something look weird?  Click here and report an issue</a><br />
+<a href="https://github.com/SheetJS/printj">Source Code Repo</a><br />
+<a href="https://github.com/SheetJS/printj/issues">Issues?  Something look weird?  Click here and report an issue</a><br />
 <br />
 <pre>
 usage: var printf = PRINTJ.sprintf;
--- a/lib/loop_code.mjs
+++ b/lib/loop_code.mjs
@ -7,11 +7,14 @@

 var PRINTJ/*:PRINTJModule*/ = /*::(*/{}/*:: :any)*/;

-PRINTJ.version = '1.2.1';
+PRINTJ.version = '1.3.2';

 export const version = PRINTJ.version;

+var tcache = {};
+
 function tokenize(fmt/*:string*/)/*:ParsedFmt*/ {
+	if(tcache[fmt]) return tcache[fmt];
 	var out/*:ParsedFmt*/ = [];
 	var start/*:number*/ = 0;

@ -130,13 +133,16 @@ function tokenize(fmt/*:string*/)/*:ParsedFmt*/ {
 	}

 	if(start < fmt.length) out.push(["L", fmt.substring(start)]);
-	return out;
+	return (tcache[fmt] = out);
 }

 var u_inspect/*:(o:any)=>string*/ = JSON.stringify;

+function set_inspect(inspect) { u_inspect = inspect; }
+
 function doit(t/*:ParsedFmt*/, args/*:Array<any>*/)/*:string*/ {
-	var o/*:Array<string>*/ = [];
+	//var o/*:Array<string>*/ = [];
+	var o = "";
 	var argidx/*:number*/ = 0, idx/*:number*/ = 0;
 	var Vnum/*:number*/ = 0;
 	var pad/*:string*/ = "";
@ -144,26 +150,26 @@ function doit(t/*:ParsedFmt*/, args/*:Array<any>*/)/*:string*/ {
 		var m/*:ParsedEntry*/ = t[i], c/*:number*/ = (m[0]/*:string*/).charCodeAt(0);
 		/* m order: conv full param flags width prec length */

-		if(c === /*L*/ 76) { o.push(m[1]); continue; }
-		if(c === /*%*/ 37) { o.push("%"); continue; }
+		if(c === /*L*/ 76) { o += /*o.push*/(m[1]); continue; }
+		if(c === /*%*/ 37) { o += /*o.push*/("%"); continue; }

 		var O/*:string*/ = "";
 		var isnum/*:number*/ = 0, radix/*:number*/ = 10, bytes/*:number*/ = 4, sign/*:boolean*/ = false;

 		/* flags */
-		var flags/*:string*/ = m[3]||"";
+		var flags/*:string*/ = m[3]/*||""*/;
 		var alt/*:boolean*/ = flags.indexOf("#") > -1;

 		/* position */
-		if(m[2]) argidx = parseInt(m[2])-1;
+		if(m[2]) argidx = parseInt(m[2], 10)-1;
 		/* %m special case */
-		else if(c === /*m*/ 109 && !alt) { o.push("Success"); continue; }
+		else if(c === /*m*/ 109 && !alt) { o += /*.push*/("Success"); continue; }

 		/* grab width */
-		var width =  0; if(m[ 4] != null && m[ 4].length > 0) { if(m[ 4].charAt(0) !== '*') width = parseInt(m[ 4], 10); else if(m[ 4].length === 1) width = args[idx++]; else width = args[parseInt(m[ 4].substr(1), 10)-1]; }
+		var width =  0; if( m[ 4].length > 0) { if(m[ 4].charAt(0) !== '*') width = parseInt(m[ 4], 10); else if(m[ 4].length === 1) width = args[idx++]; else width = args[parseInt(m[ 4].substr(1), 10)-1]; }

 		/* grab precision */
-		var prec =  -1; if(m[ 5] != null && m[ 5].length > 0) { if(m[ 5].charAt(0) !== '*') prec = parseInt(m[ 5], 10); else if(m[ 5].length === 1) prec = args[idx++]; else prec = args[parseInt(m[ 5].substr(1), 10)-1]; }
+		var prec =  -1; if( m[ 5].length > 0) { if(m[ 5].charAt(0) !== '*') prec = parseInt(m[ 5], 10); else if(m[ 5].length === 1) prec = args[idx++]; else prec = args[parseInt(m[ 5].substr(1), 10)-1]; }

 		/* position not specified */
 		if(!m[2]) argidx = idx++;
@ -172,7 +178,7 @@ function doit(t/*:ParsedFmt*/, args/*:Array<any>*/)/*:string*/ {
 		var arg/*:any*/ = args[argidx];

 		/* grab length */
-		var len/*:string*/ = m[6] || "";
+		var len/*:string*/ = m[6]/* || ""*/;

 		switch(c) {
 			/* str cCsS */
@ -258,7 +264,8 @@ function doit(t/*:ParsedFmt*/, args/*:Array<any>*/)/*:string*/ {

 			/* store length in the `len` key */
 			case /*n*/ 110:
-				if(arg) { arg.len=0; for(var oo/*:number*/ = 0; oo < o.length; ++oo) arg.len += o[oo].length; }
+				if(arg) { arg.len = o.length; }
+				//if(arg) { arg.len=0; for(var oo/*:number*/ = 0; oo < o.length; ++oo) arg.len += o[oo].length; }
 				continue;

 			/* process error */
@ -557,9 +564,9 @@ function doit(t/*:ParsedFmt*/, args/*:Array<any>*/)/*:string*/ {

 		}

-		o.push(O);
+		o += /*.push*/(O);
 	}
-	return o.join("");
+	return o/*.join("")*/;
 }

 function vsprintf(fmt/*:string*/, args/*:Args*/)/*:string*/ { return doit(tokenize(fmt), args); }
@ -570,5 +577,5 @@ function sprintf(/*:: ...argz*/)/*:string*/ {
 	return doit(tokenize(arguments[0]), args);
 }

-export { sprintf, vsprintf };
+export { sprintf, vsprintf, set_inspect };

--- a/misc/import_map.json
+++ b/misc/import_map.json
@ -0,0 +1,3 @@
+{
+	"imports": {}
+}
--- a/misc/test.deno.jsonc
+++ b/misc/test.deno.jsonc
@ -0,0 +1,11 @@
+{
+  "compilerOptions": {
+    "lib": [
+      "deno.ns",
+      "dom",
+      "dom.iterable",
+      "dom.asynciterable"
+    ]
+  },
+  "importMap": "./import_map.json"
+}
--- a/package.json
+++ b/package.json
@ -1,6 +1,6 @@
 {
 	"name": "printj",
-	"version": "1.2.1",
+	"version": "1.3.2",
 	"author": "sheetjs",
 	"description": "Pure-JS printf",
 	"keywords": [
@ -10,10 +10,10 @@
 		"string"
 	],
 	"bin": {
-		"printj": "./bin/printj.njs"
+		"printj": "bin/printj.njs"
 	},
-	"main": "./printj",
-	"module": "./print.mjs",
+	"main": "printj.js",
+	"module": "printj.mjs",
 	"types": "types",
 	"browser": {
 		"process": false,
@ -22,16 +22,22 @@
 	"dependencies": {
 	},
 	"devDependencies": {
-		"mocha": "~2.5.3",
-		"blanket": "~1.2.3",
 		"@sheetjs/uglify-js": "~2.7.3",
 		"@types/node": "^8.0.7",
-		"dtslint": "^0.1.2",
-		"typescript": "2.2.0"
+		"alex": "10.0.0",
+		"blanket": "~1.2.3",
+		"dtslint": "4.2.1",
+		"eslint": "6.8.0",
+		"eslint-plugin-html": "6.0.0",
+		"eslint-plugin-json": "1.4.0",
+		"jscs": "3.0.7",
+		"jshint": "2.9.6",
+		"markdown-spellcheck": "1.3.1",
+		"mocha": "~2.5.3"
 	},
 	"repository": {
 		"type": "git",
-		"url": "git://github.com/SheetJS/printj.git"
+		"url": "https://git.sheetjs.com/sheetjs/printj.git"
 	},
 	"scripts": {
 		"test": "make test",
@ -46,13 +52,17 @@
 	},
 	"alex": {
 		"allow": [
-			"period"
+			"whitespace",
+			"special",
+			"period",
+			"just",
+			"invalid"
 		]
 	},
-	"homepage": "http://sheetjs.com/opensource",
-	"files": ["printj.js", "printj.mjs", "bin/printj.njs", "LICENSE", "README.md", "dist/*.js", "dist/*.map", "dist/LICENSE", "types/index.d.ts", "types/*.json"],
+	"homepage": "https://sheetjs.com/",
+	"files": ["printj.js", "printj.mjs", "bin/printj.njs", "LICENSE", "README.md", "shim.js", "dist/*.js", "dist/*.map", "dist/LICENSE", "types/index.d.ts", "types/*.json"],
 	"bugs": {
-		"url": "https://github.com/SheetJS/printj/issues"
+		"url": "https://git.sheetjs.com/sheetjs/printj/issues"
 	},
 	"license": "Apache-2.0",
 	"engines": {
--- a/printj.flow.js
+++ b/printj.flow.js
@ -28,9 +28,12 @@ var PRINTJ/*:PRINTJModule*/;
 	/*jshint ignore:end */
 }(function(PRINTJ/*:PRINTJModule*/) {

-PRINTJ.version = '1.2.1';
+PRINTJ.version = '1.3.2';
+
+var tcache = {};

 function tokenize(fmt/*:string*/)/*:ParsedFmt*/ {
+	if(tcache[fmt]) return tcache[fmt];
 	var out/*:ParsedFmt*/ = [];
 	var start/*:number*/ = 0;

@ -149,7 +152,7 @@ function tokenize(fmt/*:string*/)/*:ParsedFmt*/ {
 	}

 	if(start < fmt.length) out.push(["L", fmt.substring(start)]);
-	return out;
+	return (tcache[fmt] = out);
 }

 /*:: var util = require('util'); */
@ -157,8 +160,11 @@ function tokenize(fmt/*:string*/)/*:ParsedFmt*/ {
 if(typeof process !== 'undefined' && !!process.versions && !!process.versions.node) util=require("util");
 var u_inspect/*:(o:any)=>string*/ = (typeof util != 'undefined') ? util.inspect : JSON.stringify;

+function set_inspect(inspect) { u_inspect = inspect; }
+
 function doit(t/*:ParsedFmt*/, args/*:Array<any>*/)/*:string*/ {
-	var o/*:Array<string>*/ = [];
+	//var o/*:Array<string>*/ = [];
+	var o = "";
 	var argidx/*:number*/ = 0, idx/*:number*/ = 0;
 	var Vnum/*:number*/ = 0;
 	var pad/*:string*/ = "";
@ -166,26 +172,26 @@ function doit(t/*:ParsedFmt*/, args/*:Array<any>*/)/*:string*/ {
 		var m/*:ParsedEntry*/ = t[i], c/*:number*/ = (m[0]/*:string*/).charCodeAt(0);
 		/* m order: conv full param flags width prec length */

-		if(c === /*L*/ 76) { o.push(m[1]); continue; }
-		if(c === /*%*/ 37) { o.push("%"); continue; }
+		if(c === /*L*/ 76) { o += /*o.push*/(m[1]); continue; }
+		if(c === /*%*/ 37) { o += /*o.push*/("%"); continue; }

 		var O/*:string*/ = "";
 		var isnum/*:number*/ = 0, radix/*:number*/ = 10, bytes/*:number*/ = 4, sign/*:boolean*/ = false;

 		/* flags */
-		var flags/*:string*/ = m[3]||"";
+		var flags/*:string*/ = m[3]/*||""*/;
 		var alt/*:boolean*/ = flags.indexOf("#") > -1;

 		/* position */
-		if(m[2]) argidx = parseInt(m[2])-1;
+		if(m[2]) argidx = parseInt(m[2], 10)-1;
 		/* %m special case */
-		else if(c === /*m*/ 109 && !alt) { o.push("Success"); continue; }
+		else if(c === /*m*/ 109 && !alt) { o += /*.push*/("Success"); continue; }

 		/* grab width */
-		var width =  0; if(m[ 4] != null && m[ 4].length > 0) { if(m[ 4].charAt(0) !== '*') width = parseInt(m[ 4], 10); else if(m[ 4].length === 1) width = args[idx++]; else width = args[parseInt(m[ 4].substr(1), 10)-1]; }
+		var width =  0; if( m[ 4].length > 0) { if(m[ 4].charAt(0) !== '*') width = parseInt(m[ 4], 10); else if(m[ 4].length === 1) width = args[idx++]; else width = args[parseInt(m[ 4].substr(1), 10)-1]; }

 		/* grab precision */
-		var prec =  -1; if(m[ 5] != null && m[ 5].length > 0) { if(m[ 5].charAt(0) !== '*') prec = parseInt(m[ 5], 10); else if(m[ 5].length === 1) prec = args[idx++]; else prec = args[parseInt(m[ 5].substr(1), 10)-1]; }
+		var prec =  -1; if( m[ 5].length > 0) { if(m[ 5].charAt(0) !== '*') prec = parseInt(m[ 5], 10); else if(m[ 5].length === 1) prec = args[idx++]; else prec = args[parseInt(m[ 5].substr(1), 10)-1]; }

 		/* position not specified */
 		if(!m[2]) argidx = idx++;
@ -194,7 +200,7 @@ function doit(t/*:ParsedFmt*/, args/*:Array<any>*/)/*:string*/ {
 		var arg/*:any*/ = args[argidx];

 		/* grab length */
-		var len/*:string*/ = m[6] || "";
+		var len/*:string*/ = m[6]/* || ""*/;

 		switch(c) {
 			/* str cCsS */
@ -280,7 +286,8 @@ function doit(t/*:ParsedFmt*/, args/*:Array<any>*/)/*:string*/ {

 			/* store length in the `len` key */
 			case /*n*/ 110:
-				if(arg) { arg.len=0; for(var oo/*:number*/ = 0; oo < o.length; ++oo) arg.len += o[oo].length; }
+				if(arg) { arg.len = o.length; }
+				//if(arg) { arg.len=0; for(var oo/*:number*/ = 0; oo < o.length; ++oo) arg.len += o[oo].length; }
 				continue;

 			/* process error */
@ -579,9 +586,9 @@ function doit(t/*:ParsedFmt*/, args/*:Array<any>*/)/*:string*/ {

 		}

-		o.push(O);
+		o += /*.push*/(O);
 	}
-	return o.join("");
+	return o/*.join("")*/;
 }

 function vsprintf(fmt/*:string*/, args/*:Args*/)/*:string*/ { return doit(tokenize(fmt), args); }
@ -596,6 +603,6 @@ PRINTJ.sprintf = sprintf;
 PRINTJ.vsprintf = vsprintf;
 PRINTJ._doit = doit;
 PRINTJ._tokenize = tokenize;
-
+PRINTJ.set_inspect = set_inspect;
 }));

--- a/printj.js
+++ b/printj.js
@ -25,9 +25,12 @@ var PRINTJ;
 	/*jshint ignore:end */
 }(function(PRINTJ) {

-PRINTJ.version = '1.2.1';
+PRINTJ.version = '1.3.2';
+
+var tcache = {};

 function tokenize(fmt) {
+	if(tcache[fmt]) return tcache[fmt];
 	var out = [];
 	var start = 0;

@ -146,15 +149,18 @@ function tokenize(fmt) {
 	}

 	if(start < fmt.length) out.push(["L", fmt.substring(start)]);
-	return out;
+	return (tcache[fmt] = out);
 }

 /*global process:true, util:true, require:true */
 if(typeof process !== 'undefined' && !!process.versions && !!process.versions.node) util=require("util");
 var u_inspect = (typeof util != 'undefined') ? util.inspect : JSON.stringify;

+function set_inspect(inspect) { u_inspect = inspect; }
+
 function doit(t, args) {
-	var o = [];
+	//var o = [];
+	var o = "";
 	var argidx = 0, idx = 0;
 	var Vnum = 0;
 	var pad = "";
@ -162,26 +168,26 @@ function doit(t, args) {
 		var m = t[i], c = (m[0]).charCodeAt(0);
 		/* m order: conv full param flags width prec length */

-		if(c === /*L*/ 76) { o.push(m[1]); continue; }
-		if(c === /*%*/ 37) { o.push("%"); continue; }
+		if(c === /*L*/ 76) { o += /*o.push*/(m[1]); continue; }
+		if(c === /*%*/ 37) { o += /*o.push*/("%"); continue; }

 		var O = "";
 		var isnum = 0, radix = 10, bytes = 4, sign = false;

 		/* flags */
-		var flags = m[3]||"";
+		var flags = m[3]/*||""*/;
 		var alt = flags.indexOf("#") > -1;

 		/* position */
-		if(m[2]) argidx = parseInt(m[2])-1;
+		if(m[2]) argidx = parseInt(m[2], 10)-1;
 		/* %m special case */
-		else if(c === /*m*/ 109 && !alt) { o.push("Success"); continue; }
+		else if(c === /*m*/ 109 && !alt) { o += /*.push*/("Success"); continue; }

 		/* grab width */
-		var width =  0; if(m[ 4] != null && m[ 4].length > 0) { if(m[ 4].charAt(0) !== '*') width = parseInt(m[ 4], 10); else if(m[ 4].length === 1) width = args[idx++]; else width = args[parseInt(m[ 4].substr(1), 10)-1]; }
+		var width =  0; if( m[ 4].length > 0) { if(m[ 4].charAt(0) !== '*') width = parseInt(m[ 4], 10); else if(m[ 4].length === 1) width = args[idx++]; else width = args[parseInt(m[ 4].substr(1), 10)-1]; }

 		/* grab precision */
-		var prec =  -1; if(m[ 5] != null && m[ 5].length > 0) { if(m[ 5].charAt(0) !== '*') prec = parseInt(m[ 5], 10); else if(m[ 5].length === 1) prec = args[idx++]; else prec = args[parseInt(m[ 5].substr(1), 10)-1]; }
+		var prec =  -1; if( m[ 5].length > 0) { if(m[ 5].charAt(0) !== '*') prec = parseInt(m[ 5], 10); else if(m[ 5].length === 1) prec = args[idx++]; else prec = args[parseInt(m[ 5].substr(1), 10)-1]; }

 		/* position not specified */
 		if(!m[2]) argidx = idx++;
@ -190,7 +196,7 @@ function doit(t, args) {
 		var arg = args[argidx];

 		/* grab length */
-		var len = m[6] || "";
+		var len = m[6]/* || ""*/;

 		switch(c) {
 			/* str cCsS */
@ -276,7 +282,8 @@ function doit(t, args) {

 			/* store length in the `len` key */
 			case /*n*/ 110:
-				if(arg) { arg.len=0; for(var oo = 0; oo < o.length; ++oo) arg.len += o[oo].length; }
+				if(arg) { arg.len = o.length; }
+				//if(arg) { arg.len=0; for(var oo = 0; oo < o.length; ++oo) arg.len += o[oo].length; }
 				continue;

 			/* process error */
@ -575,9 +582,9 @@ function doit(t, args) {

 		}

-		o.push(O);
+		o += /*.push*/(O);
 	}
-	return o.join("");
+	return o/*.join("")*/;
 }

 function vsprintf(fmt, args) { return doit(tokenize(fmt), args); }
@ -592,6 +599,6 @@ PRINTJ.sprintf = sprintf;
 PRINTJ.vsprintf = vsprintf;
 PRINTJ._doit = doit;
 PRINTJ._tokenize = tokenize;
-
+PRINTJ.set_inspect = set_inspect;
 }));

--- a/printj.mjs
+++ b/printj.mjs
@ -7,11 +7,14 @@

 var PRINTJ/*:PRINTJModule*/ = /*::(*/{}/*:: :any)*/;

-PRINTJ.version = '1.2.1';
+PRINTJ.version = '1.3.2';

 export const version = PRINTJ.version;

+var tcache = {};
+
 function tokenize(fmt/*:string*/)/*:ParsedFmt*/ {
+	if(tcache[fmt]) return tcache[fmt];
 	var out/*:ParsedFmt*/ = [];
 	var start/*:number*/ = 0;

@ -130,13 +133,16 @@ function tokenize(fmt/*:string*/)/*:ParsedFmt*/ {
 	}

 	if(start < fmt.length) out.push(["L", fmt.substring(start)]);
-	return out;
+	return (tcache[fmt] = out);
 }

 var u_inspect/*:(o:any)=>string*/ = JSON.stringify;

+function set_inspect(inspect) { u_inspect = inspect; }
+
 function doit(t/*:ParsedFmt*/, args/*:Array<any>*/)/*:string*/ {
-	var o/*:Array<string>*/ = [];
+	//var o/*:Array<string>*/ = [];
+	var o = "";
 	var argidx/*:number*/ = 0, idx/*:number*/ = 0;
 	var Vnum/*:number*/ = 0;
 	var pad/*:string*/ = "";
@ -144,26 +150,26 @@ function doit(t/*:ParsedFmt*/, args/*:Array<any>*/)/*:string*/ {
 		var m/*:ParsedEntry*/ = t[i], c/*:number*/ = (m[0]/*:string*/).charCodeAt(0);
 		/* m order: conv full param flags width prec length */

-		if(c === /*L*/ 76) { o.push(m[1]); continue; }
-		if(c === /*%*/ 37) { o.push("%"); continue; }
+		if(c === /*L*/ 76) { o += /*o.push*/(m[1]); continue; }
+		if(c === /*%*/ 37) { o += /*o.push*/("%"); continue; }

 		var O/*:string*/ = "";
 		var isnum/*:number*/ = 0, radix/*:number*/ = 10, bytes/*:number*/ = 4, sign/*:boolean*/ = false;

 		/* flags */
-		var flags/*:string*/ = m[3]||"";
+		var flags/*:string*/ = m[3]/*||""*/;
 		var alt/*:boolean*/ = flags.indexOf("#") > -1;

 		/* position */
-		if(m[2]) argidx = parseInt(m[2])-1;
+		if(m[2]) argidx = parseInt(m[2], 10)-1;
 		/* %m special case */
-		else if(c === /*m*/ 109 && !alt) { o.push("Success"); continue; }
+		else if(c === /*m*/ 109 && !alt) { o += /*.push*/("Success"); continue; }

 		/* grab width */
-		var width =  0; if(m[ 4] != null && m[ 4].length > 0) { if(m[ 4].charAt(0) !== '*') width = parseInt(m[ 4], 10); else if(m[ 4].length === 1) width = args[idx++]; else width = args[parseInt(m[ 4].substr(1), 10)-1]; }
+		var width =  0; if( m[ 4].length > 0) { if(m[ 4].charAt(0) !== '*') width = parseInt(m[ 4], 10); else if(m[ 4].length === 1) width = args[idx++]; else width = args[parseInt(m[ 4].substr(1), 10)-1]; }

 		/* grab precision */
-		var prec =  -1; if(m[ 5] != null && m[ 5].length > 0) { if(m[ 5].charAt(0) !== '*') prec = parseInt(m[ 5], 10); else if(m[ 5].length === 1) prec = args[idx++]; else prec = args[parseInt(m[ 5].substr(1), 10)-1]; }
+		var prec =  -1; if( m[ 5].length > 0) { if(m[ 5].charAt(0) !== '*') prec = parseInt(m[ 5], 10); else if(m[ 5].length === 1) prec = args[idx++]; else prec = args[parseInt(m[ 5].substr(1), 10)-1]; }

 		/* position not specified */
 		if(!m[2]) argidx = idx++;
@ -172,7 +178,7 @@ function doit(t/*:ParsedFmt*/, args/*:Array<any>*/)/*:string*/ {
 		var arg/*:any*/ = args[argidx];

 		/* grab length */
-		var len/*:string*/ = m[6] || "";
+		var len/*:string*/ = m[6]/* || ""*/;

 		switch(c) {
 			/* str cCsS */
@ -258,7 +264,8 @@ function doit(t/*:ParsedFmt*/, args/*:Array<any>*/)/*:string*/ {

 			/* store length in the `len` key */
 			case /*n*/ 110:
-				if(arg) { arg.len=0; for(var oo/*:number*/ = 0; oo < o.length; ++oo) arg.len += o[oo].length; }
+				if(arg) { arg.len = o.length; }
+				//if(arg) { arg.len=0; for(var oo/*:number*/ = 0; oo < o.length; ++oo) arg.len += o[oo].length; }
 				continue;

 			/* process error */
@ -557,9 +564,9 @@ function doit(t/*:ParsedFmt*/, args/*:Array<any>*/)/*:string*/ {

 		}

-		o.push(O);
+		o += /*.push*/(O);
 	}
-	return o.join("");
+	return o/*.join("")*/;
 }

 function vsprintf(fmt/*:string*/, args/*:Args*/)/*:string*/ { return doit(tokenize(fmt), args); }
@ -570,5 +577,5 @@ function sprintf(/*:: ...argz*/)/*:string*/ {
 	return doit(tokenize(arguments[0]), args);
 }

-export { sprintf, vsprintf };
+export { sprintf, vsprintf, set_inspect };

--- a/test.js
+++ b/test.js
@ -1,8 +1,11 @@
 /* vim: set ts=2: */
+/* eslint-env mocha */
+/*global assert:true */
 var X;
 var IMPLS = {}, IMPLA = [], IMPL = [];
 if(typeof require !== 'undefined') {
 	assert = require('assert');
+	require('./shim');
 	X=require('./');
 	IMPL = require("./lib/impl.json");
 	IMPL.forEach(function(impl, i) { IMPLS[impl] = IMPLA[i] = require("./lib/" + impl); });
@ -171,6 +174,13 @@ describe('special cases', function() {
 		assert.equal(sprintf("|%1$b|%1$B|%1$d|%1$D|%1$i|%1$o|%1$O|%1$u|%1$U|%1$x|%1$X|", undefined), "|0|0|0|0|0|0|0|0|0|0|0|");
 		assert.equal(sprintf("|%1$b|%1$B|%1$d|%1$D|%1$i|%1$o|%1$O|%1$u|%1$U|%1$x|%1$X|", null), "|0|0|0|0|0|0|0|0|0|0|0|");
 	});
+	if(typeof JSON !== "undefined") it('correctly handles JSON conversion: J', function() {
+		var data = ({a:1});
+		assert.equal(sprintf("%J", data), JSON.stringify(data));
+		X.set_inspect(function(data) { return "|" + JSON.stringify(data) + "|"; });
+		assert.equal(sprintf("%J", data), JSON.stringify(data));
+		assert.equal(sprintf("%#J", data), "|" + JSON.stringify(data) + "|");
+	});
 	it('handles dynamic specifiers', function() {
 		assert.equal(sprintf("|%5s|", "sheetjs"), "|sheetjs|");
 		assert.equal(sprintf("|%*s|", 5, "sheetjs"), "|sheetjs|");
--- a/test.ts
+++ b/test.ts
@ -0,0 +1,147 @@
+/* vim: set ts=2: */
+/* eslint-env mocha */
+import * as assert_ from 'https://deno.land/std/testing/asserts.ts';
+const assert: any = {...assert_};
+assert.throws = function(f: () => void) { assert.assertThrows(function() { try { f(); } catch(e) { throw e instanceof Error ? e : new Error(e); }})};
+assert.doesNotThrow = function(f: ()=>void) { f(); };
+assert.equal = assert.assertEquals;
+assert.notEqual = assert.assertNotEquals;
+assert.deepEqual = (x: any,y: any, z?: string) => assert.equal(JSON.stringify(x), JSON.stringify(y), z);
+
+// @deno-types="./types/index.d.ts"
+import * as X from "./printj.mjs";
+
+var sprintf = X.sprintf;
+var chars = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ !\"#$%&'()*+,-./0123456789:;<=>?@[\\]^_~{|}`".split("");
+var convs = "aAbBcCdDeEfFgGiJmnoOpsSTuUVxXyY%".split("");
+var flags = " #'+-0".split("");
+var digits = "0123456789".split("");
+var lens = "hIjlLqtwzZ".split(""); lens.push("hh"); lens.push("ll");
+var other = "$*.".split("");
+var unused: string[] = []; chars.forEach(function(c) {
+	if(convs.indexOf(c) == -1  &&
+	   flags.indexOf(c) == -1  &&
+	   digits.indexOf(c) == -1 &&
+	   lens.indexOf(c) == -1   &&
+	   other.indexOf(c) == -1
+	) unused.push(c);
+});
+
+Deno.test('special cases', async function(t) {
+	await t.step('fails on unrecognized format chars: ' + unused.join(""), function() {
+		unused.forEach(function(c) {
+			assert.throws(function() { sprintf("%" + c, 0); }, "Should fail on %" +c);
+		});
+	});
+	await t.step('accepts all expected conversions: ' + convs.join(""), function() {
+		convs.forEach(function(c) {
+			assert.doesNotThrow(function() { sprintf("%" + c, 0); }, "Should pass on %" +c);
+		});
+	});
+	await t.step('accepts all expected lengths: ' + lens.join(""), function() {
+		lens.forEach(function(l) {
+			var fmt = "%" + l + "X";
+			assert.doesNotThrow(function() { sprintf(fmt, 0); }, "Should pass on "+fmt);
+		});
+	});
+	await t.step('accepts all expected flags: ' + flags.join(""), function() {
+		flags.forEach(function(l) {
+			var fmt = "%" + l + "X";
+			assert.doesNotThrow(function() { sprintf(fmt, 0); }, "Should pass on "+fmt);
+		});
+	});
+	await t.step('correctly handles character conversions: cC', function() {
+		assert.equal(sprintf("|%c %c|", "69", 69), "|6 E|");
+		assert.equal(sprintf("|%c|", {toString:function() { return "69"; }, valueOf: function() { return 69; }} ), "|6|");
+	});
+	await t.step('correctly handles error conversion: m', function() {
+		var x = new Error("sheetjs");
+		(x as any).errno = 69; x.toString = function() { return "SHEETJS"; };
+		assert.equal(sprintf("|%#m|", x), "|sheetjs|");
+		delete (x as any).message;
+		assert.equal(sprintf("|%#m|", x), "|Error number 69|");
+		delete (x as any).errno;
+		assert.equal(sprintf("|%#m|", x), "|Error SHEETJS|");
+	});
+	await t.step('correctly handles typeof and valueOf conversions: TV', function() {
+		assert.equal(sprintf("%1$T %1$#T", 1), 'number Number');
+		assert.equal(sprintf("%1$T %1$#T", 'foo'), 'string String');
+		assert.equal(sprintf("%1$T %1$#T", [1,2,3]), 'object Array');
+		assert.equal(sprintf("%1$T %1$#T", null).replace(/Object|global/, "Null"), 'object Null');
+		assert.equal(sprintf("%1$T %1$#T", undefined).replace(/Object|global/, "Undefined"), 'undefined Undefined');
+
+		var _f = function() { return "f"; };
+		var _3 = function() { return 3; };
+		assert.equal(sprintf("%1$d %1$s %1$V", {toString:_f}), '0 f f');
+		assert.equal(sprintf("%1$d %1$s %1$V", {valueOf:_3}), '3 [object Object] 3');
+		assert.equal(sprintf("%1$d %1$s %1$V", {valueOf:_3, toString:_f}), '3 f 3');
+	});
+	await t.step('correctly handles standard integer conversions: diouxXDUO', function() {
+		assert.equal(sprintf("%02hhx %02hhX", 1, 1234321), "01 91");
+		assert.equal(sprintf("%02hhx %-02hhX", -1, -253), "ff 3 ");
+		assert.equal(sprintf("%#02llx", -3), "0xfffffffffffffffd");
+		assert.equal(sprintf("%#02llX", -3), "0XFFFFFFFFFFFFFFFD");
+		assert.equal(sprintf("%#02llo", -3), "01777777777777777777775");
+		assert.equal(sprintf("%#02llu", -3), "18446744073709551613");
+		assert.equal(sprintf("%#03lld", -3), "-03");
+		assert.equal(sprintf("%.9d %.9d", 123456, -123456), "000123456 -000123456");
+	});
+	await t.step('correctly handles new binary conversions: bB', function() {
+		assert.equal(sprintf("%#b", -3), "0b11111111111111111111111111111101");
+		assert.equal(sprintf("%#5B", 3), " 0b11");
+	});
+	await t.step('recognizes IEEE754 special values', function() {
+		assert.equal(sprintf("%a", Infinity), "inf");
+		assert.equal(sprintf("%e", -Infinity), "-inf");
+		assert.equal(sprintf("%f", 0/0), "nan");
+		assert.equal(sprintf("%g", 1/-Infinity), "-0");
+	});
+	await t.step('correctly handles floating point conversions: aAeEfFgG', function() {
+		assert.equal(sprintf("%1$g %1$#g", 1e5), "100000 100000.");
+		assert.equal(sprintf("%.3g %.3g", 1.2345e-4, 1.2345e-5), "0.000123 1.23e-05");
+		assert.equal(sprintf("%f", 1.23e22).replace("10486","00000"), "12300000000000000000000.000000");
+		assert.equal(sprintf("|%1$4.1f|%1$04.1f|%1$-4.1f", 1.2), "| 1.2|01.2|1.2 ");
+		assert.equal(sprintf("%1$.1a|%1$04.0f", -128), "-0x1.0p+7|-128");
+		assert.equal(sprintf("%1$.1a|%1$04.0f", -6.9e-11), "-0x1.3p-34|-000");
+		assert.equal(sprintf("%a %A %a %A", 1, .2, .69, 6e20), "0x1p+0 0X1.999999999999AP-3 0x1.6147ae147ae14p-1 0X1.043561A88293P+69");
+		assert.equal(sprintf("%La %LA %La %LA", 1, .2, .69, 6e20), "0x8p-3 0XC.CCCCCCCCCCCDP-6 0xb.0a3d70a3d70ap-4 0X8.21AB0D441498P+66");
+		assert.equal(sprintf("%010.1a", 1.), "0x001.0p+0");
+		assert.equal(sprintf("%.7a %.7a", 129, -129), "0x1.0200000p+7 -0x1.0200000p+7");
+		assert.equal(sprintf("%.7a", -3.1), "-0x1.8cccccdp+1");
+	});
+	await t.step('consistently handles null and undefined', function() {
+		assert.equal(sprintf("|%1$a|%1$A|%1$e|%1$E|%1$f|%1$F|%1$g|%1$G|", undefined), "|nan|NAN|nan|NAN|nan|NAN|nan|NAN|");
+		assert.equal(sprintf("|%1$a|%1$A|%1$e|%1$E|%1$f|%1$F|%1$g|%1$G|", null), "|nan|NAN|nan|NAN|nan|NAN|nan|NAN|");
+		assert.equal(sprintf("|%1$b|%1$B|%1$d|%1$D|%1$i|%1$o|%1$O|%1$u|%1$U|%1$x|%1$X|", undefined), "|0|0|0|0|0|0|0|0|0|0|0|");
+		assert.equal(sprintf("|%1$b|%1$B|%1$d|%1$D|%1$i|%1$o|%1$O|%1$u|%1$U|%1$x|%1$X|", null), "|0|0|0|0|0|0|0|0|0|0|0|");
+	});
+	await t.step('correctly handles JSON conversion: J', function() {
+		var data = ({a:1});
+		assert.equal(sprintf("%J", data), JSON.stringify(data));
+		X.set_inspect(function(data: any) { return "|" + JSON.stringify(data) + "|"; });
+		assert.equal(sprintf("%J", data), JSON.stringify(data));
+		assert.equal(sprintf("%#J", data), "|" + JSON.stringify(data) + "|");
+	});
+	await t.step('handles dynamic specifiers', function() {
+		assert.equal(sprintf("|%5s|", "sheetjs"), "|sheetjs|");
+		assert.equal(sprintf("|%*s|", 5, "sheetjs"), "|sheetjs|");
+		assert.equal(sprintf("|%2$*1$s|", 5, "sheetjs", 10), "|sheetjs|");
+		assert.equal(sprintf("|%10s|", "sheetjs"), "|   sheetjs|");
+		assert.equal(sprintf("|%2$*3$s|", 5, "sheetjs", 10), "|   sheetjs|");
+		assert.equal(sprintf("|%0*.*d|", 4, 2, 1), "|  01|");
+		assert.equal(sprintf("|%1$0*3$.*2$d|", 1, 2, 4), "|  01|");
+		assert.equal(sprintf("|%*.*d|",   4, 2, 1), "|  01|");
+		assert.equal(sprintf("|%-*.*d|",  4, 2, 1), "|01  |");
+		assert.equal(sprintf("|%*.*d|",  -4, 2, 1), "|01  |");
+		assert.equal(sprintf("|%-*.*d|", -4, 2, 1), "|01  |");
+		assert.equal(sprintf("|%*s|", 4, "sheetjs"), "|sheetjs|");
+		assert.equal(sprintf("|%*.*s|", 4,  3, "sheetjs"), "| she|");
+		assert.equal(sprintf("|%*.*s|", 4,  2, "sheetjs"), "|  sh|");
+		assert.equal(sprintf("|%*.*s|", 4,  1, "sheetjs"), "|   s|");
+		assert.equal(sprintf("|%*.*s|", 4,  0, "sheetjs"), "|    |");
+		assert.equal(sprintf("|%*.*s|", 4, -1, "sheetjs"), "|sheetjs|");
+	});
+	await t.step('handles long strings', function() {
+		for(var i = 10; i <= 1000; i+= 10) assert.equal(sprintf("%" + i + "s", "abc").length, i);
+	});
+});
--- a/tests/mjs.html
+++ b/tests/mjs.html
@ -14,8 +14,8 @@ table, td {
 </head>
 <body>
 <b>PRINTJ ESM Live Demo</b><br />
-<a href="https://git.io/printj">Source Code Repo</a><br />
-<a href="https://git.io/printj_issues">Issues?  Something look weird?  Click here and report an issue</a><br />
+<a href="https://github.com/SheetJS/printj">Source Code Repo</a><br />
+<a href="https://github.com/SheetJS/printj/issues">Issues?  Something look weird?  Click here and report an issue</a><br />
 <br />
 <pre>
 usage: import { sprintf as printf } from './printj.mjs';
--- a/types/bin_printj.ts
+++ b/types/bin_printj.ts
@ -34,7 +34,7 @@ return 0;

 function parse_arg(arg: string): any {
 	const m: string = arg.substr(2);
-	let p: number = 0;
+	let p = 0;
 	if(arg.charCodeAt(1) === 58) switch((p = arg.charCodeAt(0))) {
 		case /*n*/ 110: return parseInt(m, 10);
 		case /*f*/ 102: return parseFloat(m);
--- a/types/index.d.ts
+++ b/types/index.d.ts
@ -1,5 +1,4 @@
 /* index.d.ts (C) 2015-present SheetJS */
-// TypeScript Version: 2.2

 /** Version string */
 export const version: string;
@ -9,3 +8,6 @@ export function sprintf(fmt: string, ...args: any[]): string;

 /** Generate formatted string from format and array of variables */
 export function vsprintf(fmt: string, args: any[]): string;
+
+/** Override inspect function for #J conversion */
+export function set_inspect(inspector: (val: any)=>string): void;
--- a/types/tsconfig.json
+++ b/types/tsconfig.json
@ -9,6 +9,7 @@
        "paths": { "printj": ["."] },
        "types": [],
        "noEmit": true,
+        "strictFunctionTypes": true,
        "forceConsistentCasingInFileNames": true
    }
 }
Author	SHA1	Message	Date
SheetJS	c672ba9c52	version bump 1.3.2	2023-12-14 00:37:22 -05:00
SheetJS	700ebdb524	replace git.io links	2022-04-27 01:29:21 -04:00
SheetJS	d8b2f48bd9	version bump 1.3.1: npm minutiae	2022-01-23 23:33:44 -05:00
SheetJS	7847c20022	version bump 1.3.0: memoization	2021-08-30 17:46:24 -04:00
SheetJS	a79d4e4b32	README update [ci skip]	2021-08-30 00:50:54 -04:00
SheetJS	6fb0427a31	version bump 1.2.3	2021-08-29 22:31:43 -04:00
gregod	850ab38461	Fix typo in module path in package.json Otherwise tools like snowpack that rely on the module attribute fail.	2021-02-06 18:23:37 +00:00
SheetJS	1c4d6e97fc	License text	2019-10-08 02:05:51 -04:00
SheetJS	e6d6f001c5	version bump 1.2.2: old node shim	2019-07-29 07:01:48 -04:00