Method importStatement

lib/RuntimeTemplate.js:1048–1141

* Returns the import statement and the compat statement. * @param {object} options options object * @param {boolean=} options.update whether a new variable should be created or the existing one updated * @param {Module} options.module the module * @param {Module} options.originModule module

({
		update,
		module,
		moduleGraph,
		chunkGraph,
		request,
		importVar,
		originModule,
		weak,
		dependency,
		runtimeRequirements
	})

	 * @returns {[string, string]} the import statement and the compat statement
	 */
	importStatement({
		update,
		module,
		moduleGraph,
		chunkGraph,
		request,
		importVar,
		originModule,
		weak,
		dependency,
		runtimeRequirements
	}) {
		if (!module) {
			return [
				this.missingModuleStatement({
					request
				}),
				""
			];
		}

		if (chunkGraph.getModuleId(module) === null) {
			if (weak) {
				// only weak referenced modules don't get an id
				// we can always emit an error emitting code here
				return [
					this.weakError({
						module,
						chunkGraph,
						request,
						type: "statements"
					}),
					""
				];
			}
			throw new Error(
				`RuntimeTemplate.importStatement(): ${noModuleIdErrorMessage(
					module,
					chunkGraph
				)}`
			);
		}
		const moduleId = this.moduleId({
			module,
			chunkGraph,
			request,
			weak
		});
		// Harmony imports may be wrapped in runtime-condition `if` blocks
		// but referenced outside those blocks (e.g. by harmony reexport),
		// so they must remain function-scoped (`var`) rather than
		// block-scoped (`let`/`const`).
		const optDeclaration = update ? "" : "var ";

		const exportsType = module.getExportsType(
			chunkGraph.moduleGraph,
			/** @type {BuildMeta} */
			(originModule.buildMeta).strictHarmonyModule