Method updateParent

lib/ModuleGraph.js:317–357

* Updates parent using the provided dependency. * @param {Dependency} dependency the need update dependency * @param {ModuleGraphConnection=} connection the target connection * @param {Module=} parentModule the parent module * @returns {void}

(dependency, connection, parentModule)

	 * @returns {void}
	 */
	updateParent(dependency, connection, parentModule) {
		if (this._dependencySourceOrderMap.has(dependency)) {
			return;
		}
		if (!connection || !parentModule) {
			return;
		}
		const originDependency = connection.dependency;

		// src/index.js
		// import { c } from "lib/c" -> c = 0
		// import { a, b } from "lib" -> a and b have the same source order -> a = b = 1
		// import { d } from "lib/d" -> d = 2
		const currentSourceOrder =
			/** @type {HarmonyImportSideEffectDependency | HarmonyImportSpecifierDependency} */
			(dependency).sourceOrder;

		// lib/index.js (reexport)
		// import { a } from "lib/a" -> a = 0
		// import { b } from "lib/b" -> b = 1
		const originSourceOrder =
			/** @type {HarmonyImportSideEffectDependency | HarmonyImportSpecifierDependency} */
			(originDependency).sourceOrder;
		if (
			typeof currentSourceOrder === "number" &&
			typeof originSourceOrder === "number"
		) {
			// src/index.js
			// import { c } from "lib/c" -> c = 0
			// import { a } from "lib/a" -> a = 1.0 = 1(main) + 0.0(sub)
			// import { b } from "lib/b" -> b = 1.1 = 1(main) + 0.1(sub)
			// import { d } from "lib/d" -> d = 2
			this._dependencySourceOrderMap.set(dependency, {
				main: currentSourceOrder,
				sub: originSourceOrder
			});

			// Save for later batch sorting
			this._modulesNeedingSort.add(parentModule);
		}
	}

	/**
	 * Finish update parent.