Snowpack Plugin: Acorn Plugin Injection

A Snowpack plugin to inject Acorn plugins into Rollup's internal configuration.

Table of Contents

• About
• Usage
  • Installation
  • Plugin Options
  • Configuration Example
• License

About

This project features a Snowpack plugin that injects Acorn plugins into Snowpack's internal Rollup configuration. This resolves various issues with lack of parser support when bundling a Snowpack project's dependencies.

This project was created as a solution for a StackOverflow post. Relevant topics:

• StackOverflow Post: "JavaScript private class methods with Snowpack"
• Snowpack Discussion#1209: "Snowpack doesn't support private class method"
• Snowpack issue#1263: "Snowpack doesn't seem to support private ('hashed') class methods"

Usage

This plugin needs to be installed as a Node.js development dependency and configured within a Snowpack configuration. Instructions are included below.

Installation

Installing the plugin as a Node.js development dependency can be done with any of the following package managers:

• npm:

  npm install --save-dev snowpack-acorn-injection-plugin
  

• Yarn:

  yarn add --dev snowpack-acorn-injection-plugin
  

Plugin Options

Name	Type	Description
plugins	string[]	Acorn plugin dependency names to resolve and inject

Note: Plugins stated in plugins must be resolvable through Node.js' require(...).

Configuration Example

The plugin can be configured with any of Snowpack's configuration types.

For example, injecting acorn-stage3 can be done with the following example:

{
  ...
  "plugins": [
    [
      "snowpack-acorn-injection-plugin",
      {
        "plugins": [
          "acorn-stage3"
        ]
      }
    ]
  ],
  ...
}

An Important Note: Acorn plugins must be installed separately as development dependencies; this plugin has no transitive Acorn dependencies. In this example, acorn-stage3 is installed as a development dependency in the project.

License

Licensed under MIT license.