Method _findTarget

lib/ExportsInfo.js:1591–1633

* Returns the target, undefined when there is no target, false when no target is valid. * @param {ModuleGraph} moduleGraph the module graph * @param {ValidTargetModuleFilter} validTargetModuleFilter a valid target module * @param {AlreadyVisitedExportInfo} alreadyVisited set of already visited

(moduleGraph, validTargetModuleFilter, alreadyVisited)

	 * @returns {TargetItemWithoutConnection | null | undefined | false} the target, undefined when there is no target, false when no target is valid
	 */
	_findTarget(moduleGraph, validTargetModuleFilter, alreadyVisited) {
		if (!this._target || this._target.size === 0) return;
		const rawTarget =
			/** @type {Target} */
			(this._getMaxTarget()).values().next().value;
		if (!rawTarget) return;
		/** @type {TargetItemWithoutConnection} */
		let target = {
			module: rawTarget.connection.module,
			export: rawTarget.export,
			deferred: Boolean(
				rawTarget.connection.dependency &&
				ImportPhaseUtils.isDefer(
					/** @type {HarmonyImportDependency} */ (
						rawTarget.connection.dependency
					).phase
				)
			)
		};
		for (;;) {
			if (validTargetModuleFilter(target.module)) return target;
			const exportsInfo = moduleGraph.getExportsInfo(target.module);
			const exportInfo = exportsInfo.getExportInfo(target.export[0]);
			if (alreadyVisited.has(exportInfo)) return null;
			const newTarget = exportInfo._findTarget(
				moduleGraph,
				validTargetModuleFilter,
				alreadyVisited
			);
			if (!newTarget) return false;
			if (target.export.length === 1) {
				target = newTarget;
			} else {
				target = {
					module: newTarget.module,
					export: newTarget.export
						? [...newTarget.export, ...target.export.slice(1)]
						: target.export.slice(1),
					deferred: newTarget.deferred
				};
			}
		}
	}

	/**
	 * Returns the target.