fix: rewrite remaining .js imports on multi-line from clauses

The previous sed only matched lines starting with import/export,
missing multi-line imports where 'from' is on a continuation line.

Assisted-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: bennypowers

packages/dev-server-core/test/helpers.ts

@@ -5,7 +5,7 @@ import {
   fetchText,
   expectIncludes,
   virtualFilesPlugin,
-} from '../src/test-helpers.js';
+} from '../src/test-helpers.ts';
 import { DevServerCoreConfig } from '../src/server/DevServerCoreConfig.ts';
 
 export function createTestServer(config: Partial<DevServerCoreConfig> = {}) {

packages/dev-server-import-maps/src/importMapsPlugin.ts

@@ -17,7 +17,7 @@ import {
   shouldInject,
   mergeImportMaps,
   getDocumentBaseUrl,
-} from './utils.js';
+} from './utils.ts';
 import { ImportMap } from '@import-maps/resolve';
 import {
   createElement,

packages/dev-server-rollup/test/node/plugins/alias.test.ts

@@ -19,7 +19,7 @@ describe('@rollup/plugin-alias', () => {
 
     try {
       const text = await fetchText(`${host}/app.js`);
-      expectIncludes(text, "import moduleA from './module-a-stub.js'");
+      expectIncludes(text, "import moduleA from './module-a-stub.ts'");
     } finally {
       server.stop();
     }

packages/dev-server-rollup/test/node/plugins/node-resolve.test.ts

@@ -17,7 +17,7 @@ describe('@rollup/plugin-node-resolve', () => {
 
     try {
       const text = await fetchText(`${host}/app.js`);
-      expectIncludes(text, "import moduleA from './node_modules/module-a/index.js'");
+      expectIncludes(text, "import moduleA from './node_modules/module-a/index.ts'");
     } finally {
       server.stop();
     }

packages/dev-server-rollup/test/node/plugins/postcss.test.ts

@@ -49,7 +49,7 @@ html {
       expectIncludes(text, 'export default');
       expectIncludes(
         text,
-        "import styleInject from './node_modules/style-inject/dist/style-inject.es.js';",
+        "import styleInject from './node_modules/style-inject/dist/style-inject.es.ts';",
       );
       expectIncludes(text, 'styleInject(css_248z);');
     } finally {

packages/dev-server-rollup/test/node/rollupBundlePlugin.test.ts

@@ -47,17 +47,17 @@ describe('rollupBundlePlugin', () => {
 
     try {
       const textA1 = await fetchText(`${host}/a1.js`);
-      expectIncludes(textA1, "import { b as bc, d } from './__rollup-generated__d.js';");
+      expectIncludes(textA1, "import { b as bc, d } from './__rollup-generated__d.ts';");
       expectIncludes(textA1, 'var a1 = `a ${bc} ${d}`;');
       expectIncludes(textA1, 'export { a1 as default };');
 
       const textA2 = await fetchText(`${host}/a2.js`);
-      expectIncludes(textA2, "import { b as bc, d } from './__rollup-generated__d.js';");
+      expectIncludes(textA2, "import { b as bc, d } from './__rollup-generated__d.ts';");
       expectIncludes(textA2, 'var a2 = `a ${bc} ${d}`;');
       expectIncludes(textA2, 'export { a2 as default };');
 
       const textA3 = await fetchText(`${host}/a3.js`);
-      expectIncludes(textA3, "import { b as bc, d } from './__rollup-generated__d.js';");
+      expectIncludes(textA3, "import { b as bc, d } from './__rollup-generated__d.ts';");
       expectIncludes(textA3, 'var a3 = `a ${bc} ${d}`;');
       expectIncludes(textA3, 'export { a3 as default };');
 
@@ -85,7 +85,7 @@ describe('rollupBundlePlugin', () => {
 
     try {
       const text = await fetchText(`${host}/not-bundled.js`);
-      expectIncludes(text, "import a from './a.js';");
+      expectIncludes(text, "import a from './a.ts';");
       expectIncludes(text, 'export default `not bundled ${a}`;');
     } finally {
       server.stop();

packages/dev-server-rollup/test/node/unit.test.ts

@@ -77,7 +77,7 @@ describe('@web/dev-server-rollup', () => {
 
       try {
         const text = await fetchText(`${host}/app.js`);
-        expectIncludes(text, "import moduleA from './src/foo.js'");
+        expectIncludes(text, "import moduleA from './src/foo.ts'");
       } finally {
         server.stop();
       }

packages/rollup-plugin-html/src/input/extract/extractAssets.ts

@@ -7,7 +7,7 @@ import { type InputAsset } from '../InputData.ts';import {
   isHashedAsset,
   resolveAssetFilePath,
   createAssetPicomatchMatcher,
-} from '../../assets/utils.js';
+} from '../../assets/utils.ts';
 
 export interface ExtractAssetsParams {
   document: Document;

packages/rollup-plugin-html/src/output/injectedUpdatedAssetPaths.ts

@@ -11,8 +11,7 @@ import {
   createAssetPicomatchMatcher,
 } from '../assets/utils.ts';
 import { type InputData } from '../input/InputData.ts';import { createError } from '../utils.ts';
-import { type EmittedAssets } from './emitAssets.ts';
-import { toBrowserPath } from './utils.ts';
+import { type EmittedAssets } from './emitAssets.ts';import { toBrowserPath } from './utils.ts';
 export interface InjectUpdatedAssetPathsArgs {
   document: Document;
   input: InputData;

packages/rollup-plugin-html/test/src/output/getEntrypointBundles.test.ts

@@ -2,7 +2,7 @@ import { expect } from 'chai';
 import {
   getEntrypointBundles,
   createImportPath,
-} from '../../../src/output/getEntrypointBundles.js';
+} from '../../../src/output/getEntrypointBundles.ts';
 import { GeneratedBundle, ScriptModuleTag } from '../../../src/RollupPluginHTMLOptions.ts';
 
 describe('createImportPath()', () => {