Method getCacheVersion

lib/schemes/VirtualUrlPlugin.js:291–295

* Get the cache version for a given version value * @param {VersionFn | true | string} version The version value or function * @returns {string | undefined} The cache version

(version)

	 * @returns {string | undefined} The cache version
	 */
	getCacheVersion(version) {
		return version === true
			? undefined
			: (typeof version === "function" ? version() : version) || "unset";
	}
}

VirtualUrlPlugin.DEFAULT_SCHEME = DEFAULT_SCHEME;