babel-plugin-module-selector

This plugin allows you to replace one module reference with another module reference based on your setting. You can use this plugin if you have a project where customization of modules is a requirement.

Installation

npm install babel-plugin-module-selector

Usage

Configure your .babelrc to use this plugin. An example of it is provided below.

{
  "plugins": [
    ["module-selector", {
      "roots": ["src"],
      "selectorsRoot": "customizations"
    }]
  ]
}

In roots you define the folders under which transformations will apply. selectorsRoot is the root folder where you place all your customization selectors. selectorsRoot should be within roots. Each customization selector can mirror a part of the folder structure of your root. I.e:

project
  src
    a
    b
    customizations
      selectorA
        a
      selectorB
        b

With the example folder structure above, when we build with selector selectorA, src/customizations/selectorA/a is used whenever a is required/imported. However b is still required/imported from src/b.

This model allows you to partialy replace a standard version of your app while still reusing most of the code.

You can use the BABEL_MODULE_SELECTOR environment variable to control which selector to use for builds, or you can add a selector config to your .babelrc to do the same.