Method add

lib/optimize/RealContentHashPlugin.js:358–376

(hash, stack)

						 * @param {Set<string>} stack stack of hashes
						 */
						const add = (hash, stack) => {
							const deps = getDependencies(hash);
							if (!deps) return;
							stack.add(hash);
							for (const dep of deps) {
								if (hashesInOrder.has(dep)) continue;
								if (stack.has(dep)) {
									throw new Error(
										`Circular hash dependency ${Array.from(
											stack,
											hashInfo
										).join(class="st">" -> ")} -> ${hashInfo(dep)}`
									);
								}
								add(dep, stack);
							}
							hashesInOrder.add(hash);
							stack.delete(hash);
						};
						if (hashesInOrder.has(hash)) continue;
						add(hash, new Set());
					}