From af450c6feb9f3196c70f7bb7cce0b5d1100cd0c0 Mon Sep 17 00:00:00 2001
From: Shinnosuke Watanabe <snnskwtnb@gmail.com>
Date: Fri, 21 Nov 2014 15:31:32 +0900
Subject: [PATCH] init

---
 .editorconfig  | 12 ++++++++
 .eslintrc      | 10 +++++++
 .gitattributes |  1 +
 .gitignore     |  2 ++
 .travis.yml    |  8 ++++++
 LICENSE        | 20 +++++++++++++
 README.md      | 78 ++++++++++++++++++++++++++++++++++++++++++++++++++
 appveyor.yml   | 20 +++++++++++++
 index.js       | 22 ++++++++++++++
 package.json   | 56 ++++++++++++++++++++++++++++++++++++
 test.js        | 58 +++++++++++++++++++++++++++++++++++++
 11 files changed, 287 insertions(+)
 create mode 100755 .editorconfig
 create mode 100755 .eslintrc
 create mode 100755 .gitattributes
 create mode 100755 .gitignore
 create mode 100755 .travis.yml
 create mode 100755 LICENSE
 create mode 100755 README.md
 create mode 100755 appveyor.yml
 create mode 100755 index.js
 create mode 100644 package.json
 create mode 100755 test.js

diff --git a/.editorconfig b/.editorconfig
new file mode 100755
index 0000000..8c52ff9
--- /dev/null
+++ b/.editorconfig
@@ -0,0 +1,12 @@
+root = true
+
+[*]
+charset = utf-8
+end_of_line = lf
+indent_style = space
+indent_size = 2
+insert_final_newline = true
+trim_trailing_whitespace = true
+
+[*.md]
+trim_trailing_whitespace = false
diff --git a/.eslintrc b/.eslintrc
new file mode 100755
index 0000000..13e5d61
--- /dev/null
+++ b/.eslintrc
@@ -0,0 +1,10 @@
+env:
+  browser: false
+  node: true
+rules:
+  no-extra-parens: 2
+  eqeqeq: 2
+  block-scoped-var: 2
+  quotes:
+    - 2
+    - single
diff --git a/.gitattributes b/.gitattributes
new file mode 100755
index 0000000..176a458
--- /dev/null
+++ b/.gitattributes
@@ -0,0 +1 @@
+* text=auto
diff --git a/.gitignore b/.gitignore
new file mode 100755
index 0000000..ba2a97b
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,2 @@
+node_modules
+coverage
diff --git a/.travis.yml b/.travis.yml
new file mode 100755
index 0000000..cfe68da
--- /dev/null
+++ b/.travis.yml
@@ -0,0 +1,8 @@
+language: node_js
+node_js:
+  - '0.10'
+  - '0.11'
+after_script:
+  - npm run-script coveralls
+notifications:
+  email: false
diff --git a/LICENSE b/LICENSE
new file mode 100755
index 0000000..81395e4
--- /dev/null
+++ b/LICENSE
@@ -0,0 +1,20 @@
+The MIT License (MIT)
+
+Copyright (c) 2014 Shinnosuke Watanabe
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of
+this software and associated documentation files (the "Software"), to deal in
+the Software without restriction, including without limitation the rights to
+use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
+the Software, and to permit persons to whom the Software is furnished to do so,
+subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
+IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
diff --git a/README.md b/README.md
new file mode 100755
index 0000000..5cf7796
--- /dev/null
+++ b/README.md
@@ -0,0 +1,78 @@
+# script-equal 
+
+[![Build Status](https://travis-ci.org/shinnn/script-equal.svg?branch=master)](https://travis-ci.org/shinnn/script-equal)
+[![Build status](https://ci.appveyor.com/api/projects/status/ia3h5bcsy84vgfpc?svg=true)](https://ci.appveyor.com/project/ShinnosukeWatanabe/script-equal)
+[![Coverage Status](https://img.shields.io/coveralls/shinnn/script-equal.svg)](https://coveralls.io/r/shinnn/script-equal)
+[![Dependency Status](https://david-dm.org/shinnn/script-equal.svg)](https://david-dm.org/shinnn/script-equal)
+[![devDependency Status](https://david-dm.org/shinnn/script-equal/dev-status.svg)](https://david-dm.org/shinnn/script-equal#info=devDependencies)
+
+Check if one JavaScript code is equivalent to another code, using [UglifyJS]
+
+```javascript
+var scriptEqual = require('script-equal');
+
+scriptEqual(
+  'window.foo = {a: 0, b: 1};',
+  'window["foo"]={\nb: 1,\rna: 0\n};'
+); //=> true
+
+scriptEqual(
+  'var foo = 12',
+  'var foo = 1 + 1 * 14 - 3;;;;;;;;;;;;;;;;;;;'
+); //=> true
+```
+
+## Installation
+
+[![NPM version](https://badge.fury.io/js/script-equal.svg)](https://www.npmjs.org/package/script-equal)
+
+[Use npm.](https://www.npmjs.org/doc/cli/npm-install.html)
+
+```
+npm install script-equal
+```
+
+## API
+
+```javascript
+var scriptEqual = require('script-equal');
+```
+
+### scriptEqual(*script0*, *script1* [, *options*])
+
+*script0*:`String` (JavaScript code)  
+*script1*:`String` (JavaScript code)  
+*options*: `Object` ([UglifyJS][options] options)  
+Return: `Boolean`
+
+It compresses two JavaScript string with [UglifyJS]. If the results are the same string, it returns `true`. Otherwise it returns `false`.
+
+You can use all [UglifyJS][options] options.
+
+```javascript
+var scriptEqual = require('script-equal');
+
+var foo = 'a = {}; a.b = 0;';
+var bar = 'a = {}; a[\'b\'] = 0;';
+
+scriptEqual(foo, bar); //=> true
+
+scriptEqual(foo, bar, {
+  compress: {properties: false}
+}); //=> false
+```
+
+It throws an error when it fails to parse strings.
+
+```javascript
+scriptEqual('a = 1', '1 = a'); // Error
+```
+
+## License
+
+Copyright (c) 2014 [Shinnosuke Watanabe](https://github.com/shinnn)
+
+Licensed under [the MIT License](./LICENSE).
+
+[UglifyJS]: https://github.com/mishoo/UglifyJS2
+[options]: https://github.com/mishoo/UglifyJS2#api-reference
diff --git a/appveyor.yml b/appveyor.yml
new file mode 100755
index 0000000..5c3c7d1
--- /dev/null
+++ b/appveyor.yml
@@ -0,0 +1,20 @@
+init:
+  - git config --global core.autocrlf input
+
+version: '{build}'
+
+environment:
+  matrix:
+    - nodejs_version: '0.10'
+    - nodejs_version: '0.11'
+
+install:
+  - ps: Install-Product node $env:nodejs_version
+  - npm install --production
+  - npm install tape
+
+build: off
+
+test_script:
+  - ps: 'node test.js #PowerShell'
+  - cmd: node test.js
diff --git a/index.js b/index.js
new file mode 100755
index 0000000..2b3acf2
--- /dev/null
+++ b/index.js
@@ -0,0 +1,22 @@
+/*!
+ * script-equal | MIT (c) Shinnosuke Watanabe
+ * https://github.com/shinnn/script-equal
+*/
+'use strict';
+
+var UglifyJS = require('uglify-js');
+var xtend = require('xtend');
+
+module.exports = function scriptEqual(first, second, options) {
+  [first, second].forEach(function(arg, i) {
+    if (typeof arg !== 'string') {
+      throw new TypeError(
+        i === 0 ? 'First' : 'Second',
+        ' argument is not a string. Arguments must be: (string, string[, options])'
+      );
+    }
+  });
+
+  options = xtend(options, {fromString: true});
+  return UglifyJS.minify(first, options).code === UglifyJS.minify(second, options).code;
+};
diff --git a/package.json b/package.json
new file mode 100644
index 0000000..dbf241c
--- /dev/null
+++ b/package.json
@@ -0,0 +1,56 @@
+{
+  "name": "script-equal",
+  "version": "0.0.0",
+  "description": "Check if one JavaScript code is equivalent to another code",
+  "repository": "shinnn/script-equal",
+  "author": {
+    "name": "Shinnosuke Watanabe",
+    "url": "https://github.com/shinnn"
+  },
+  "scripts": {
+    "pretest": "eslint *.js & jscs *.js",
+    "test": "node test.js | tap-spec",
+    "coverage": "istanbul cover test.js",
+    "coveralls": "${npm_package_scripts_coverage} && istanbul-coveralls"
+  },
+  "licenses": [
+    {
+      "type": "MIT",
+      "url": "https://github.com/shinnn/script-equal/blob/master/LICENSE"
+    }
+  ],
+  "files": [
+    "index.js",
+    "LICENSE"
+  ],
+  "keywords": [
+    "code",
+    "parse",
+    "compare",
+    "comparison",
+    "equal",
+    "equivalent",
+    "script",
+    "js",
+    "javascript",
+    "uglify",
+    "uglifyjs",
+    "uglify-js"
+  ],
+  "dependencies": {
+    "uglify-js": "^2.4.15",
+    "xtend": "^4.0.0"
+  },
+  "devDependencies": {
+    "eslint": "^0.9.2",
+    "istanbul": "^0.3.2",
+    "istanbul-coveralls": "^1.0.1",
+    "jscs": "^1.7.3",
+    "tap-spec": "^2.1.0",
+    "tape": "^3.0.3"
+  },
+  "jscsConfig": {
+    "preset": "google",
+    "maximumLineLength": 98
+  }
+}
diff --git a/test.js b/test.js
new file mode 100755
index 0000000..7511310
--- /dev/null
+++ b/test.js
@@ -0,0 +1,58 @@
+'use strict';
+
+var scriptEqual = require('./');
+var test = require('tape');
+
+test('scriptEqual()', function(t) {
+  t.plan(7);
+
+  t.strictEqual(
+    scriptEqual(
+      'function w() {};\n(function() {\r\nvar d =2;var arr={e:0, f:[\'\', {}]}})();',
+      '(function() {\nvar w=1+  1*"1",a = {f: ["", {}], e: 0};})();       function w() {}'
+    ),
+    true,
+    'should return boolean if the first script is equivalent to the second.'
+  );
+
+  t.strictEqual(
+    scriptEqual(
+      'a={};a[\'b\']=1;',
+      'a={};a.b=1;',
+      {compress: {properties: false}}
+    ),
+    false,
+    'should support `compress` option.'
+  );
+
+  t.strictEqual(
+    scriptEqual(
+      '(function(a) {a=1})(this)',
+      '(function(b) {b=1})(this)',
+      {mangle: false}
+    ),
+    false,
+    'should support `mangle` option.'
+  );
+
+  t.strictEqual(
+    scriptEqual('', ' ', false),
+    true,
+    'should run completely even if the third argument is falsy.'
+  );
+
+  t.throws(
+    scriptEqual.bind(null, [''], '', {}), /TypeError.*First/,
+    'should throw a type error when the first argument is not a string.'
+  );
+
+  t.throws(
+    scriptEqual.bind(null, '', 1), /TypeError.*Second/,
+    'should throw a type error when the second argument is not a string.'
+  );
+
+  t.throws(
+    scriptEqual.bind(null), /TypeError.*First/,
+    'should throw a type error when it takes no arguments.'
+  );
+});