NXT-20659: Adapt ui and ss tests jobs to work with typescript

CHANGELOG.md

@@ -4,6 +4,15 @@
 
 * Fixed `--override` to support `package-lock.json` with `lockfileVersion` 2 and 3.
 
+### pack
+
+* Fixed `enact pack` to work with TypeScript 7 by skipping in-build type checking (`fork-ts-checker`), which requires the JavaScript API that TypeScript 7 no longer provides.
+* Fixed `enact pack` to report errors thrown while preparing the build and exit with a non-zero status, rather than logging them as an uncaught exception and exiting successfully without producing any output.
+
+### serve
+
+* Fixed `enact serve` to report errors thrown while preparing the build and exit with a non-zero status.
+
 ## 7.3.3 (July 7, 2026)
 
 ### transpile

commands/pack.js

@@ -329,11 +329,16 @@ function cli (args) {
 		chalk = _chalk;
 		import('strip-ansi').then(({default: _stripAnsi}) => {
 			stripAnsi = _stripAnsi;
-			api(opts).catch(err => {
-				printErrorDetails(err, () => {
-					process.exit(1);
+			// Run api() inside the promise chain so that errors thrown synchronously while preparing the
+			// build (e.g. creating the webpack config) are reported and fail the process, rather than
+			// becoming an uncaught exception that bin/enact.js logs and then exits successfully.
+			Promise.resolve()
+				.then(() => api(opts))
+				.catch(err => {
+					printErrorDetails(err, () => {
+						process.exit(1);
+					});
 				});
-			});
 		});
 	});
 }

commands/serve.js

@@ -368,11 +368,15 @@ function cli (args) {
 
 	import('chalk').then(({default: _chalk}) => {
 		chalk = _chalk;
-		api(opts).catch(err => {
-			// console.error(chalk.red('ERROR: ') + (err.message || err));
-			console.log(err);
-			process.exit(1);
-		});
+		// Run api() inside the promise chain so errors thrown synchronously are reported and fail the
+		// process instead of becoming an uncaught exception that bin/enact.js logs and swallows.
+		Promise.resolve()
+			.then(() => api(opts))
+			.catch(err => {
+				// console.error(chalk.red('ERROR: ') + (err.message || err));
+				console.log(err);
+				process.exit(1);
+			});
 	});
 }
 

config/webpack.config.js

@@ -39,6 +39,25 @@ const {
 } = require('@enact/dev-utils');
 const createEnvironmentHash = require('./createEnvironmentHash');
 
+// TypeScript 7 and later no longer ship the classic JavaScript API (and have no `main` entry for
+// `resolve` to find) that fork-ts-checker relies on, so in-build type checking is only available
+// with TypeScript < 7. Source files are still transpiled by Babel regardless of the version; use
+// `tsc` to type check with TypeScript 7+.
+function hasTypeScriptJsApi () {
+	let version;
+	try {
+		version = require(path.resolve('node_modules/typescript/package.json')).version;
+	} catch (e) {
+		// TypeScript is not installed; let the type checker setup report that.
+		return true;
+	}
+	if (parseInt(version) >= 7) {
+		console.log(`TypeScript ${version} detected: skipping in-build type checking (run tsc separately).`);
+		return false;
+	}
+	return true;
+}
+
 // This is the production and development configuration.
 // It is focused on developer experience, fast rebuilds, and a minimal bundle.
 module.exports = function (
@@ -624,7 +643,7 @@ module.exports = function (
 			// and parses any to copy over any webOS meta assets at build time.
 			new WebOSMetaPlugin({htmlPlugin: HtmlWebpackPlugin}),
 			// TypeScript type checking
-			useTypeScript &&
+			useTypeScript && hasTypeScriptJsApi() &&
 				new ForkTsCheckerWebpackPlugin({
 					async: !isEnvProduction,
 					typescript: {