Method getExportsType

lib/Module.js:655–714

* Returns export type. * @param {ModuleGraph} moduleGraph the module graph * @param {boolean | undefined} strict the importing module is strict * @returns {ExportsType} export type * "namespace": Exports is already a namespace object. namespace = exports. * "dynamic": Check at runtime if _

(moduleGraph, strict)

	 * "default-with-named": Provide a namespace object with named and default export. namespace = { ...exports, default: exports }
	 */
	getExportsType(moduleGraph, strict) {
		switch (this.buildMeta && this.buildMeta.exportsType) {
			case "flagged":
				return strict ? "default-with-named" : "namespace";
			case "namespace":
				return "namespace";
			case "default":
				switch (/** @type {BuildMeta} */ (this.buildMeta).defaultObject) {
					case "redirect":
						return "default-with-named";
					case "redirect-warn":
						return strict ? "default-only" : "default-with-named";
					default:
						return "default-only";
				}
			case "dynamic": {
				if (strict) return "default-with-named";
				// Try to figure out value of __esModule by following reexports
				const handleDefault = () => {
					switch (/** @type {BuildMeta} */ (this.buildMeta).defaultObject) {
						case "redirect":
						case "redirect-warn":
							return "default-with-named";
						default:
							return "default-only";
					}
				};
				const exportInfo = moduleGraph.getReadOnlyExportInfo(
					this,
					"__esModule"
				);
				if (exportInfo.provided === false) {
					return handleDefault();
				}
				const target = exportInfo.getTarget(moduleGraph);
				if (
					!target ||
					!target.export ||
					target.export.length !== 1 ||
					target.export[0] !== "__esModule"
				) {
					return "dynamic";
				}
				switch (
					target.module.buildMeta &&
					target.module.buildMeta.exportsType
				) {
					case "flagged":
					case "namespace":
						return "namespace";
					case "default":
						return handleDefault();
					default:
						return "dynamic";
				}
			}
			default:
				return strict ? "default-with-named" : "dynamic";