Method _forEachLevelWaterfall

lib/stats/StatsPrinter.js:183–188

* Run `fn` for each level * @private * @template {StatsPrintHooks[keyof StatsPrintHooks]} HM * @template {HM extends HookMap<infer H> ? H : never} H * @param {HM} hookMap hook map * @param {string} type type * @param {string} data data * @param {(hook: H, data: string) => string} fn fn

(hookMap, type, data, fn)

	 * @returns {string | undefined} result of `fn`
	 */
	_forEachLevelWaterfall(hookMap, type, data, fn) {
		for (const hook of this._getAllLevelHooks(hookMap, type)) {
			data = fn(/** @type {H} */ (hook), data);
		}
		return data;
	}

	/**
	 * Returns printed result.