node_modules/enhanced-resolve/lib/ModuleKindPlugin.js

/*
	MIT License http://www.opensource.org/licenses/mit-license.php
	Author Tobias Koppers @sokra
*/
"use strict";

module.exports = class ModuleKindPlugin {
	constructor(source, target) {
		this.source = source;
		this.target = target;
	}

	apply(resolver) {
		const target = resolver.ensureHook(this.target);
		resolver.getHook(this.source).tapAsync("ModuleKindPlugin", (request, resolveContext, callback) => {
			if(!request.module) return callback();
			const obj = Object.assign({}, request);
			delete obj.module;
			resolver.doResolve(target, obj, "resolve as module", resolveContext, (err, result) => {
				if(err) return callback(err);

				// Don't allow other alternatives
				if(result === undefined) return callback(null, null);
				callback(null, result);
			});
		});
	}
};