Method generate

lib/json/JsonGenerator.js:178–230

* Generates generated code for this runtime module. * @param {NormalModule} module module for which the code should be generated * @param {GenerateContext} generateContext context for generate * @returns {Source | null} generated code

(
		module,
		{
			moduleGraph,
			runtimeTemplate,
			runtimeRequirements,
			runtime,
			concatenationScope
		}
	)

	 * @returns {Source | null} generated code
	 */
	generate(
		module,
		{
			moduleGraph,
			runtimeTemplate,
			runtimeRequirements,
			runtime,
			concatenationScope
		}
	) {
		/** @type {JsonValue | undefined} */
		const data =
			module.buildInfo &&
			module.buildInfo.jsonData &&
			module.buildInfo.jsonData.get();
		if (data === undefined) {
			return new RawSource(
				runtimeTemplate.missingModuleStatement({
					request: module.rawRequest
				})
			);
		}
		const exportsInfo = moduleGraph.getExportsInfo(module);
		/** @type {JsonValue} */
		const finalJson =
			typeof data === "object" &&
			data &&
			exportsInfo.otherExportsInfo.getUsed(runtime) === UsageState.Unused
				? createObjectForExportsInfo(data, exportsInfo, runtime)
				: data;
		// Use JSON because JSON.parse() is much faster than JavaScript evaluation
		const jsonStr = /** @type {string} */ (stringifySafe(finalJson));
		const jsonExpr =
			this.options.JSONParse &&
			jsonStr.length > 20 &&
			typeof finalJson === "object"
				? `/*#__PURE__*/JSON.parse('${jsonStr.replace(/[\\']/g, "\\$&")}')`
				: jsonStr.replace(/"__proto__":/g, '["__proto__"]:');
		/** @type {string} */
		let content;
		if (concatenationScope) {
			content = `${runtimeTemplate.renderConst()} ${
				ConcatenationScope.NAMESPACE_OBJECT_EXPORT
			} = ${jsonExpr};`;
			concatenationScope.registerNamespaceExport(
				ConcatenationScope.NAMESPACE_OBJECT_EXPORT
			);
		} else {
			runtimeRequirements.add(RuntimeGlobals.module);
			content = `${module.moduleArgument}.exports = ${jsonExpr};`;
		}
		return new RawSource(content);
	}

	/**
	 * Generates fallback output for the provided error condition.