Function checkModuleLayer

lib/optimize/SplitChunksPlugin.js:625–639

(test, module)

 * @returns {boolean} true, if the module should be selected
 */
const checkModuleLayer = (test, module) => {
	if (test === undefined) return true;
	if (typeof test === "function") {
		return test(module.layer);
	}
	if (typeof test === "string") {
		const layer = module.layer;
		return test === "" ? !layer : layer ? layer.startsWith(test) : false;
	}
	if (test instanceof RegExp) {
		const layer = module.layer;
		return layer ? test.test(layer) : false;
	}
	return false;
};

/**
 * Creates a cache group source.