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node_modules/esprima/README.md
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node_modules/esprima/README.md
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### Features
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- Full support for ECMAScript 2017 ([ECMA-262 8th Edition](http://www.ecma-international.org/publications/standards/Ecma-262.htm))
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- Sensible [syntax tree format](https://github.com/estree/estree/blob/master/es5.md) as standardized by [ESTree project](https://github.com/estree/estree)
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- Experimental support for [JSX](https://facebook.github.io/jsx/), a syntax extension for [React](https://facebook.github.io/react/)
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- Full support for ECMAScript 6 ([ECMA-262](http://www.ecma-international.org/publications/standards/Ecma-262.htm))
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- Sensible [syntax tree format](https://github.com/estree/estree/blob/master/spec.md) as standardized by [ESTree project](https://github.com/estree/estree)
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- Optional tracking of syntax node location (index-based and line-column)
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- [Heavily tested](http://esprima.org/test/ci.html) (~1500 [unit tests](https://github.com/jquery/esprima/tree/master/test/fixtures) with [full code coverage](https://codecov.io/github/jquery/esprima))
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- [Heavily tested](http://esprima.org/test/ci.html) (~1250 [unit tests](https://github.com/jquery/esprima/tree/master/test/fixtures) with [full code coverage](https://codecov.io/github/jquery/esprima))
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### API
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Esprima serves as a **building block** for some JavaScript
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language tools, from [code instrumentation](http://esprima.org/demo/functiontrace.html)
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to [editor autocompletion](http://esprima.org/demo/autocomplete.html).
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Esprima can be used to perform [lexical analysis](https://en.wikipedia.org/wiki/Lexical_analysis) (tokenization) or [syntactic analysis](https://en.wikipedia.org/wiki/Parsing) (parsing) of a JavaScript program.
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Esprima runs on many popular web browsers, as well as other ECMAScript platforms such as
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[Rhino](http://www.mozilla.org/rhino), [Nashorn](http://openjdk.java.net/projects/nashorn/), and [Node.js](https://npmjs.org/package/esprima).
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A simple example on Node.js REPL:
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```javascript
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> var esprima = require('esprima');
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> var program = 'const answer = 42';
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> esprima.tokenize(program);
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[ { type: 'Keyword', value: 'const' },
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{ type: 'Identifier', value: 'answer' },
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{ type: 'Punctuator', value: '=' },
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{ type: 'Numeric', value: '42' } ]
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> esprima.parseScript(program);
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{ type: 'Program',
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body:
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[ { type: 'VariableDeclaration',
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declarations: [Object],
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kind: 'const' } ],
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sourceType: 'script' }
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```
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For more information, please read the [complete documentation](http://esprima.org/doc).
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For more information, check the web site [esprima.org](http://esprima.org).
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