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67 lines
2.9 KiB
Markdown
67 lines
2.9 KiB
Markdown
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Esprima ([esprima.org](http://esprima.org)) is an educational
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[ECMAScript](http://www.ecma-international.org/publications/standards/Ecma-262.htm)
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(also popularly known as [JavaScript](http://en.wikipedia.org/wiki/JavaScript>JavaScript))
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parsing infrastructure for multipurpose analysis. It is also written in ECMAScript.
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Esprima can be used in a web browser:
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<script src="esprima.js"></script>
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or in a Node.js application via the package manager:
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npm install esprima
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Esprima parser output is compatible with Mozilla (SpiderMonkey)
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[Parser API](https://developer.mozilla.org/en/SpiderMonkey/Parser_API).
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A very simple example:
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esprima.parse('var answer=42').body[0].declarations[0].init
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produces the following object:
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{ type: 'Literal', value: 42 }
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Esprima is still in the development, for now please check
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[the wiki documentation](http://wiki.esprima.org).
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Since it is not comprehensive nor complete, refer to the
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[issue tracker](http://issues.esprima.org) for
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[known problems](http://code.google.com/p/esprima/issues/list?q=Defect)
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and [future plans](http://code.google.com/p/esprima/issues/list?q=Enhancement).
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Esprima is supported on [many browsers](http://code.google.com/p/esprima/wiki/BrowserCompatibility):
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IE 6+, Firefox 1+, Safari 3+, Chrome 1+, and Opera 8+.
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Feedback and contribution are welcomed! Please join the
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[mailing list](http://groups.google.com/group/esprima) and read the
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[contribution guide](http://code.google.com/p/esprima/wiki/ContributionGuide)
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for further info.
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### License
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Copyright (C) 2012, 2011 [Ariya Hidayat](http://ariya.ofilabs.com/about)
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(twitter: [@ariyahidayat](http://twitter.com/ariyahidayat)) and other contributors.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions are met:
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* Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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* Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in the
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documentation and/or other materials provided with the distribution.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
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DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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