fix packaging watch test on windows (#4923)

Author: mrkishi

packages/kit/src/packaging/index.js

@@ -109,6 +109,7 @@ export async function watch(config, cwd = process.cwd()) {
 	let timeout;
 
 	const watcher = chokidar.watch(lib, { ignoreInitial: true });
+	const ready = new Promise((resolve) => watcher.on('ready', resolve));
 
 	watcher.on('all', async (type, path) => {
 		const file = analyze(config, relative(lib, path));
@@ -176,6 +177,7 @@ export async function watch(config, cwd = process.cwd()) {
 
 	return {
 		watcher,
+		ready,
 		settled: () =>
 			new Promise((fulfil, reject) => {
 				fulfillers.push(fulfil);

packages/kit/src/packaging/test/index.js

@@ -154,7 +154,7 @@ if (!process.env.CI) {
 		const config = await load_config({ cwd });
 		config.kit.package.dir = resolve(cwd, config.kit.package.dir);
 
-		const { watcher, settled } = await watch(config, cwd);
+		const { watcher, ready, settled } = await watch(config, cwd);
 
 		/** @param {string} file */
 		function compare(file) {
@@ -181,6 +181,8 @@ if (!process.env.CI) {
 		}
 
 		try {
+			await ready;
+
 			// completes initial build
 			compare('index.js');
 

packages/kit/src/packaging/test/watch/tsconfig.json

@@ -1,6 +1,7 @@
 {
 	"compilerOptions": {
 		"allowJs": true,
-		"checkJs": true
+		"checkJs": true,
+		"newLine": "lf"
 	}
 }