acorn-stage3

stage 3 proposal support for Acorn

This is a plugin for Acorn - a tiny, fast JavaScript parser, written completely in JavaScript.

It implements support for all current ECMAScript stage 3 proposals. Neither loose mode nor walk are currently supported.

• import() (ESTree) via acorn-dynamic-import
• BigInt: Arbitrary precision integers in JavaScript (ESTree) via acorn-bigint
• Numeric Separators via acorn-numeric-separator
• Optional catch binding (ESTree) via acorn-optional-catch-binding
• import.meta via acorn-import-meta
• Class field declarations via acorn-class-fields
• Private methods and getter/setters for JavaScript classes via acorn-private-methods
• Subsume JSON via acorn-json-superset

Usage

You can use this module directly in order to get an Acorn instance with the plugin installed:

var acorn = require('acorn-stage3');

Or you can use inject.js for injecting the plugin into your own version of Acorn like this:

var acorn = require('acorn-stage3/inject')(require('./custom-acorn'));

Then, use the plugins option to enable the plugiin:

var ast = acorn.parse(code, {
  plugins: { stage3: true }
});

License

This plugin is released under the GNU Affero General Public License. Please feel free to open an issue if this choice of license is a problem for your use-case.