Esprima (esprima.org) is an educational ECMAScript (also popularly known as JavaScript) parsing infrastructure for multipurpose analysis. It is also written in ECMAScript.
Esprima serves as a good basis for various tools such as coverage analyzer (node-cover and coveraje), syntax formatter (Code Painter), and code generator (escodegen).
Esprima can be used in a web browser:
<script src="esprima.js"></script>
or in a Node.js application via the package manager:
npm install esprima
Esprima parser output is compatible with Mozilla (SpiderMonkey) Parser API.
A very simple example:
esprima.parse('var answer=42').body[0].declarations[0].init
produces the following object:
{ type: 'Literal', value: 42 }
Esprima is still in the development, for now please check the wiki documentation.
Since it is not comprehensive nor complete, refer to the issue tracker for known problems and future plans. Esprima is supported on many browsers: IE 6+, Firefox 1+, Safari 3+, Chrome 1+, and Opera 8+.
Feedback and contribution are welcomed! Please join the mailing list and read the contribution guide for further info.
Copyright (C) 2012, 2011 Ariya Hidayat (twitter: @ariyahidayat) and other contributors.
Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:
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Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
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Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
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