1  ## Escodegen
 2  [![npm version](https://badge.fury.io/js/escodegen.svg)](http://badge.fury.io/js/escodegen)
 3  [![Build Status](https://secure.travis-ci.org/estools/escodegen.svg)](http://travis-ci.org/estools/escodegen)
 4  [![Dependency Status](https://david-dm.org/estools/escodegen.svg)](https://david-dm.org/estools/escodegen)
 5  [![devDependency Status](https://david-dm.org/estools/escodegen/dev-status.svg)](https://david-dm.org/estools/escodegen#info=devDependencies)
 6  
 7  Escodegen ([escodegen](http://github.com/estools/escodegen)) is an
 8  [ECMAScript](http://www.ecma-international.org/publications/standards/Ecma-262.htm)
 9  (also popularly known as [JavaScript](http://en.wikipedia.org/wiki/JavaScript))
10  code generator from [Mozilla's Parser API](https://developer.mozilla.org/en/SpiderMonkey/Parser_API)
11  AST. See the [online generator](https://estools.github.io/escodegen/demo/index.html)
12  for a demo.
13  
14  
15  ### Install
16  
17  Escodegen can be used in a web browser:
18  
19      <script src="escodegen.browser.js"></script>
20  
21  escodegen.browser.js can be found in tagged revisions on GitHub.
22  
23  Or in a Node.js application via npm:
24  
25      npm install escodegen
26  
27  ### Usage
28  
29  A simple example: the program
30  
31      escodegen.generate({
32          type: 'BinaryExpression',
33          operator: '+',
34          left: { type: 'Literal', value: 40 },
35          right: { type: 'Literal', value: 2 }
36      });
37  
38  produces the string `'40 + 2'`.
39  
40  See the [API page](https://github.com/estools/escodegen/wiki/API) for
41  options. To run the tests, execute `npm test` in the root directory.
42  
43  ### Building browser bundle / minified browser bundle
44  
45  At first, execute `npm install` to install the all dev dependencies.
46  After that,
47  
48      npm run-script build
49  
50  will generate `escodegen.browser.js`, which can be used in browser environments.
51  
52  And,
53  
54      npm run-script build-min
55  
56  will generate the minified file `escodegen.browser.min.js`.
57  
58  ### License
59  
60  #### Escodegen
61  
62  Copyright (C) 2012 [Yusuke Suzuki](http://github.com/Constellation)
63   (twitter: [@Constellation](http://twitter.com/Constellation)) and other contributors.
64  
65  Redistribution and use in source and binary forms, with or without
66  modification, are permitted provided that the following conditions are met:
67  
68    * Redistributions of source code must retain the above copyright
69      notice, this list of conditions and the following disclaimer.
70  
71    * Redistributions in binary form must reproduce the above copyright
72      notice, this list of conditions and the following disclaimer in the
73      documentation and/or other materials provided with the distribution.
74  
75  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
76  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
77  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
78  ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
79  DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
80  (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
81  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
82  ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
83  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
84  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.