Method renderChunkModules

lib/Template.js:315–379

* Renders chunk modules. * @param {ChunkRenderContext} renderContext render context * @param {Module[]} modules modules to render (should be ordered by identifier) * @param {(module: Module, renderInArray?: boolean) => Source | null} renderModule function to render a module * @param {string=

(renderContext, modules, renderModule, prefix = "")

	 * @returns {Source | null} rendered chunk modules in a Source object or null if no modules
	 */
	static renderChunkModules(renderContext, modules, renderModule, prefix = "") {
		const { chunkGraph } = renderContext;
		const source = new ConcatSource();
		if (modules.length === 0) {
			return null;
		}
		/** @type {{ id: ModuleId, module: Module }[]} */
		const modulesWithId = modules.map((m) => ({
			id: /** @type {ModuleId} */ (chunkGraph.getModuleId(m)),
			module: m
		}));
		const bounds = Template.getModulesArrayBounds(modulesWithId);
		const renderInObject = bounds === false;

		/** @type {{ id: ModuleId, source: Source | "false" }[]} */
		const allModules = modulesWithId.map(({ id, module }) => ({
			id,
			source: renderModule(module, renderInObject) || "false"
		}));

		if (bounds) {
			// Render a spare array
			const minId = bounds[0];
			const maxId = bounds[1];
			if (minId !== 0) {
				source.add(`Array(${minId}).concat(`);
			}
			source.add("[\n");
			/** @type {Map<ModuleId, { id: ModuleId, source: Source | "false" }>} */
			const modules = new Map();
			for (const module of allModules) {
				modules.set(module.id, module);
			}
			for (let idx = minId; idx <= maxId; idx++) {
				const module = modules.get(idx);
				if (idx !== minId) {
					source.add(",\n");
				}
				source.add(`/* ${idx} */`);
				if (module) {
					source.add("\n");
					source.add(module.source);
				}
			}
			source.add(`\n${prefix}]`);
			if (minId !== 0) {
				source.add(")");
			}
		} else {
			// Render an object
			source.add("{\n");
			for (let i = 0; i < allModules.length; i++) {
				const module = allModules[i];
				if (i !== 0) {
					source.add(",\n");
				}
				source.add(
					`\n/***/ ${JSON.stringify(module.id)}${renderContext.runtimeTemplate.supportsMethodShorthand() && module.source !== "false" ? "" : ":"}\n`