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# BigInt support for Acorn
[](https://www.npmjs.org/package/acorn-bigint)
This is a plugin for [Acorn](http://marijnhaverbeke.nl/acorn/) - a tiny, fast JavaScript parser, written completely in JavaScript.
It implements support for arbitrary precision integers as defined in the stage 4 proposal [BigInt: Arbitrary precision integers in JavaScript](https://github.com/tc39/proposal-bigint). The emitted AST follows [ESTree](https://github.com/estree/estree/blob/master/es2020.md#bigintliteral).
## Usage
This module provides a plugin that can be used to extend the Acorn `Parser` class:
```javascript
const {Parser} = require('acorn');
const bigInt = require('acorn-bigint');
Parser.extend(bigInt).parse('100n');
```
## License
This plugin is released under an [MIT License](./LICENSE).