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18 lines
756 B
Markdown
18 lines
756 B
Markdown
6 years ago
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---
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title: "A parser generator for JavaScript"
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editLink: false
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lastUpdated: false
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---
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PEG.js is a simple parser generator for JavaScript that produces fast parsers with excellent error reporting. You can use it to process complex data or computer languages and build transformers, interpreters, compilers and other tools easily.
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## features
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* Simple and expressive grammar syntax
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* Integrates both lexical and syntactical analysis
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* Parsers have excellent error reporting out of the box
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* Based on the [parsing expression grammar](http://en.wikipedia.org/wiki/Parsing_expression_grammar) formalism
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* Usable [from your browser](https://pegjs.org/online), from the command line, or via [JavaScript API](guides/javascript-api.md)
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