Method _flagModulesForDependencyReporting

lib/Compilation.js:3146–3187

* Assigns a fresh dependency report cache token to every module whose * dependency errors/warnings could have changed since the previous * compilation: built modules and their (transitive) parents. * @private * @param {Set<Module>} modules modules * @returns {void}

(modules)

	 * @returns {void}
	 */
	_flagModulesForDependencyReporting(modules) {
		/** @type {DependencyReportCacheToken} */
		const token = {};
		const { moduleGraph, builtModules } = this;
		/** @type {Set<Module>} */
		const updatedModules = new Set();
		for (const module of modules) {
			if (
				builtModules.has(module) ||
				!dependencyReportCacheTokens.has(module)
			) {
				updatedModules.add(module);
			}
		}
		// skip the parent walk when everything is updated anyway (initial build)
		if (updatedModules.size !== modules.size) {
			/** @type {Set<Module>} */
			const directOnlyUpdatedModules = new Set();
			for (const module of updatedModules) {
				for (const [
					referencingModule,
					connections
				] of moduleGraph.getIncomingConnectionsByOriginModule(module)) {
					if (!referencingModule) continue;
					if (updatedModules.has(referencingModule)) continue;
					const type = reduceAffectType(connections);
					if (!type) continue;
					if (type === true) {
						directOnlyUpdatedModules.add(referencingModule);
					} else {
						updatedModules.add(referencingModule);
					}
				}
			}
			for (const module of directOnlyUpdatedModules) {
				updatedModules.add(module);
			}
		}
		for (const module of updatedModules) {
			dependencyReportCacheTokens.set(module, token);
		}
	}

	/**
	 * Processes the provided callback.