Method apply

lib/ids/OccurrenceModuleIdsPlugin.js:37–172

* Applies the plugin by registering its hooks on the compiler. * @param {Compiler} compiler the compiler instance * @returns {void}

(compiler)

	 * @returns {void}
	 */
	apply(compiler) {
		compiler.hooks.validate.tap(PLUGIN_NAME, () => {
			compiler.validate(
				() =>
					require("../../schemas/plugins/ids/OccurrenceModuleIdsPlugin.json"),
				this.options,
				{
					name: "Occurrence Order Module Ids Plugin",
					baseDataPath: "options"
				},
				(options) =>
					require("../../schemas/plugins/ids/OccurrenceModuleIdsPlugin.check")(
						options
					)
			);
		});
		compiler.hooks.compilation.tap(PLUGIN_NAME, (compilation) => {
			const moduleGraph = compilation.moduleGraph;

			compilation.hooks.moduleIds.tap(PLUGIN_NAME, () => {
				const chunkGraph = compilation.chunkGraph;

				const [usedIds, modulesInOccurrenceOrder] =
					getUsedModuleIdsAndModules(compilation);

				/** @type {Map<Module, number>} */
				const occursInInitialChunksMap = new Map();
				/** @type {Map<Module, number>} */
				const occursInAllChunksMap = new Map();

				/** @type {Map<Module, number>} */
				const initialChunkChunkMap = new Map();
				/** @type {Map<Module, number>} */
				const entryCountMap = new Map();
				for (const m of modulesInOccurrenceOrder) {
					let initial = 0;
					let entry = 0;
					for (const c of chunkGraph.getModuleChunksIterable(m)) {
						if (c.canBeInitial()) initial++;
						if (chunkGraph.isEntryModuleInChunk(m, c)) entry++;
					}
					initialChunkChunkMap.set(m, initial);
					entryCountMap.set(m, entry);
				}

				/**
				 * Count occurs in entry.
				 * @param {Module} module module
				 * @returns {number} count of occurs
				 */
				const countOccursInEntry = (module) => {
					let sum = 0;
					for (const [
						originModule,
						connections
					] of moduleGraph.getIncomingConnectionsByOriginModule(module)) {
						if (!originModule) continue;
						if (!connections.some((c) => c.isTargetActive(undefined))) continue;