Revert "feat: Support TypeScript in the playground!" (#1260)

Revert "feat: Support TypeScript in the playground! (#1221)"

This reverts commit af8ada5.

Author: Rich-Harris

apps/svelte.dev/vite.config.ts

@@ -71,7 +71,7 @@ const config: UserConfig = {
 		}
 	},
 	optimizeDeps: {
-		exclude: ['@sveltejs/site-kit', '@sveltejs/repl', '@rollup/browser', 'typestript']
+		exclude: ['@sveltejs/site-kit', '@sveltejs/repl', '@rollup/browser']
 	},
 	ssr: {
 		noExternal: ['@sveltejs/site-kit', '@sveltejs/repl'],

packages/repl/package.json

@@ -64,7 +64,6 @@
 		"@sveltejs/package": "^2.0.0",
 		"@sveltejs/vite-plugin-svelte": "4.0.0",
 		"@types/estree": "^1.0.5",
-		"magic-string": "^0.30.11",
 		"prettier": "^3.3.2",
 		"prettier-plugin-svelte": "^3.3.2",
 		"publint": "^0.2.12",
@@ -103,7 +102,6 @@
 		"svelte": "5.23.0",
 		"tailwindcss": "^4.0.15",
 		"tarparser": "^0.0.4",
-		"zimmerframe": "^1.1.2",
-		"typestript": "workspace:*"
+		"zimmerframe": "^1.1.2"
 	}
 }

packages/repl/src/lib/Workspace.svelte.ts

@@ -589,10 +589,6 @@ export class Workspace {
 				extensions.push(javascript());
 				break;
 
-			case 'ts':
-				extensions.push(javascript({ typescript: true }));
-				break;
-
 			case 'html':
 				extensions.push(html());
 				break;

packages/repl/src/lib/workers/bundler/index.ts

@@ -3,7 +3,6 @@ import { walk } from 'zimmerframe';
 import '../patch_window';
 import { rollup } from '@rollup/browser';
 import { DEV } from 'esm-env';
-import strip_types from './plugins/typescript-strip-types';
 import commonjs from './plugins/commonjs';
 import glsl from './plugins/glsl';
 import json from './plugins/json';
@@ -185,7 +184,7 @@ async function get_bundle(
 				if (importer.startsWith(VIRTUAL)) {
 					const url = new URL(importee, importer);
 
-					for (const suffix of ['', '.js', '.ts', '.json']) {
+					for (const suffix of ['', '.js', '.json']) {
 						const with_suffix = `${url.pathname.slice(1)}${suffix}`;
 						const file = virtual.get(with_suffix);
 
@@ -281,15 +280,15 @@ async function get_bundle(
 			const message = `bundling ${id.replace(VIRTUAL + '/', '').replace(NPM + '/', '')}`;
 			self.postMessage({ type: 'status', message });
 
-			if (!/\.(svelte|js|ts)$/.test(id)) return null;
+			if (!/\.(svelte|js)$/.test(id)) return null;
 
-			const filename = id.split('/').pop()!;
+			const name = id.split('/').pop()?.split('.')[0];
 
 			let result: CompileResult;
 
 			if (id.endsWith('.svelte')) {
 				const compilerOptions: any = {
-					filename,
+					filename: name + '.svelte',
 					generate: Number(svelte.VERSION.split('.')[0]) >= 5 ? 'client' : 'dom',
 					dev: true
 				};
@@ -343,9 +342,9 @@ async function get_bundle(
 					$$_styles.push($$__style);
 				`.replace(/\t/g, '');
 				}
-			} else if (/\.svelte\.(js|ts)$/.test(id)) {
+			} else if (id.endsWith('.svelte.js')) {
 				const compilerOptions: any = {
-					filename,
+					filename: name + '.js',
 					generate: 'client',
 					dev: true
 				};
@@ -388,7 +387,6 @@ async function get_bundle(
 		input: './__entry.js',
 		cache: previous?.key === key && previous.cache,
 		plugins: [
-			strip_types,
 			repl_plugin,
 			commonjs,
 			json,

packages/repl/src/lib/workers/bundler/plugins/typescript-strip-types.ts

@@ -1,7 +1,6 @@
 import '@sveltejs/site-kit/polyfills';
 import type { CompileResult } from 'svelte/compiler';
 import type { ExposedCompilerOptions, File } from '../../Workspace.svelte';
-import { stripTypes } from 'typestript';
 import { load_svelte } from '../npm';
 
 // hack for magic-string and Svelte 4 compiler
@@ -22,7 +21,7 @@ addEventListener('message', async (event) => {
 
 	const { can_use_experimental_async, svelte } = (cache[version] ??= await load_svelte(version));
 
-	if (!file.name.endsWith('.svelte') && !file.name.includes('.svelte.') && !svelte.compileModule) {
+	if (!file.name.endsWith('.svelte') && !svelte.compileModule) {
 		// .svelte.js file compiled with Svelte 3/4 compiler
 		postMessage({
 			id,
@@ -38,7 +37,7 @@ addEventListener('message', async (event) => {
 
 	let migration = null;
 
-	if (file.name.endsWith('.svelte') && svelte.migrate) {
+	if (svelte.migrate) {
 		try {
 			migration = svelte.migrate(file.contents, { filename: file.name });
 		} catch (e) {
@@ -81,8 +80,7 @@ addEventListener('message', async (event) => {
 				compilerOptions.experimental = { async: true };
 			}
 
-			const code = file.name.endsWith('.ts') ? stripTypes(file.contents).toString() : file.contents;
-			result = svelte.compileModule(code, compilerOptions);
+			result = svelte.compileModule(file.contents, compilerOptions);
 		}
 
 		postMessage({