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1# Class fields support for Acorn
2
3[![NPM version](https://img.shields.io/npm/v/acorn-class-fields.svg)](https://www.npmjs.org/package/acorn-class-fields)
4
5This is a plugin for [Acorn](http://marijnhaverbeke.nl/acorn/) - a tiny, fast JavaScript parser, written completely in JavaScript.
6
7It implements support for class fields as defined in the stage 3 proposal [Class field declarations for JavaScript](https://github.com/tc39/proposal-class-fields). The emitted AST follows [an ESTree proposal](https://github.com/estree/estree/pull/180).
8
9## Usage
10
11This module provides a plugin that can be used to extend the Acorn `Parser` class:
12
13```javascript
14const {Parser} = require('acorn');
15const classFields = require('acorn-class-fields');
16Parser.extend(classFields).parse('class X { x = 0 }');
17```
18
19## License
20
21This plugin is released under an [MIT License](./LICENSE).
22