babel-plugin-alias-modules

babel-plugin-alias-modules

A Babel plugin to rewrite aliased require() calls.

Configuration

The plugin can be configured using .npmbundlerrc global config section or in the plugin configuration itself.

In both cases the structure is the same:

{
	"resolve": {
		"aliasFields": ["browser"]
	}
}

This resembles webpack's resolve.aliasFields which serves the same purpose.

Normally global config is preferred, but you can leverage plugin configuration when you need different alias fields for different packages.

The default value for resolve.aliasFields is ['browser'] as in webpack.

Note that this plugin used to look for unpkg and jsdelivr fields too, but it caused problems (see https://github.com/liferay/liferay-js-toolkit/issues/365 for more information).

Technical Details

This plugin scans package.json for fields defined in resolve.aliasFields and redirects require()s for aliased modules.

This plugin only does one part of the whole implementation of the aliases. Aliases implementation have two parts:

1. They redirect existing modules or provide virtual ones when seen from the outside, from another package.

2. They make local requires divert to a different target.

This plugin does only the second part. The first one is performed by liferay-npm-bundler-plugin-replace-browser-modules.

Please read the browser field specification for more information.