Method _processResult

lib/typescript/TypeScriptPlugin.js:169–207

* processResult tap body. Returns the input untouched unless this is a * TypeScript module that needs to be transformed. * @param {Result} result loader result tuple * @param {NormalModuleType} module the normal module * @returns {Result} possibly transformed result

(result, module)

	 * @returns {Result} possibly transformed result
	 */
	_processResult(result, module) {
		if (!JS_MODULE_TYPES.has(module.type)) return result;

		const parser = /** @type {JavascriptParser} */ (module.parser);
		if (!parser.options.typescript) return result;

		const resource = module.nameForCondition();
		if (!resource || !isTypeScriptResource(resource)) return result;

		if (TSX_RESOURCE_RE.test(resource)) {
			throw new ModuleBuildError(new Error(TSX_NOT_SUPPORTED));
		}

		if (!("stripTypeScriptTypes" in mod)) {
			throw new ModuleBuildError(new Error(NODE_API_MISSING));
		}

		const [rawSource, loaderSourceMap, ...rest] = result;
		const preStripSource = toBomFreeString(rawSource);
		const strippedSource = stripTypes(preStripSource);

		const needSourceMap = module.useSourceMap || module.useSimpleSourceMap;
		const stripMap = needSourceMap
			? createIdentitySourceMap(module.resource, preStripSource)
			: undefined;

		const outputSourceMap =
			stripMap && loaderSourceMap
				? composeWithLoaderSourceMap(
						module.resource,
						strippedSource,
						stripMap,
						preStripSource,
						loaderSourceMap
					)
				: stripMap || loaderSourceMap;

		return [strippedSource, outputSourceMap, ...rest];
	}
}

module.exports = TypeScriptPlugin;