Method processDependencyForResolving

lib/Compilation.js:2027–2118

(dep)

		 * @returns {void}
		 */
		const processDependencyForResolving = (dep) => {
			const resourceIdent = dep.getResourceIdentifier();
			if (resourceIdent !== undefined && resourceIdent !== null) {
				const category = dep.category;
				const constructor =
					/** @type {DependencyConstructor} */
					(dep.constructor);
				if (factoryCacheKey === constructor) {
					// Fast path 1: same constructor as prev item
					if (listCacheKey1 === category && listCacheKey2 === resourceIdent) {
						// Super fast path 1: also same resource
						listCacheValue.push(dep);
						return;
					}
				} else {
					const factory = this.dependencyFactories.get(constructor);
					if (factory === undefined) {
						throw new Error(
							`No module factory available for dependency type: ${constructor.name}`
						);
					}
					if (factoryCacheKey2 === factory) {
						// Fast path 2: same factory as prev item
						factoryCacheKey = constructor;
						if (listCacheKey1 === category && listCacheKey2 === resourceIdent) {
							// Super fast path 2: also same resource
							listCacheValue.push(dep);
							return;
						}
					} else {
						// Slow path
						if (factoryCacheKey2 !== undefined) {
							// Archive last cache entry
							if (dependencies === undefined) dependencies = new Map();
							dependencies.set(
								factoryCacheKey2,
								/** @type {FactoryCacheValue} */ (factoryCacheValue)
							);
							factoryCacheValue = dependencies.get(factory);
							if (factoryCacheValue === undefined) {
								factoryCacheValue = new Map();
							}
						} else {
							factoryCacheValue = new Map();
						}
						factoryCacheKey = constructor;
						factoryCacheKey2 = factory;
					}
				}
				// Here webpack is using heuristic that assumes
				// mostly esm dependencies would be used
				// so we don't allocate extra string for them
				const cacheKey =
					category === esmDependencyCategory
						? resourceIdent
						: `${category}${resourceIdent}`;
				let list = /** @type {FactoryCacheValue} */ (factoryCacheValue).get(
					cacheKey