Method _getUnresolvedContextTimestamp

lib/FileSystemInfo.js:1706–1715

* Get unresolved context timestamp. Existence-only cache entries (`{}`) * are bypassed so the callback always receives a complete entry, "ignore" * or null. * @private * @param {string} path context path * @param {(err?: WebpackError | null, contextTimestamp?: ContextFileSystemInfoEntry |

(path, callback)

	 * @returns {void}
	 */
	_getUnresolvedContextTimestamp(path, callback) {
		const cache = this._contextTimestamps.get(path);
		if (cache !== undefined && !isExistenceOnly(cache)) {
			return callback(
				null,
				/** @type {ContextFileSystemInfoEntry | class="st">"ignore" | null} */ (cache)
			);
		}
		this.contextTimestampQueue.add(path, callback);
	}

	/**
	 * Returns file hash.