fix: rewrite .js to .ts imports in test files (re-apply)

Re-apply .ts import rewrites to test files after they were lost
in a previous git checkout operation. Also fix bare package
specifiers that had erroneous .ts extension.

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

Author: bennypowers

packages/test-runner-commands/test/a11y-snapshot/a11ySnapshotPlugin.test.ts

@@ -4,7 +4,7 @@ import { runTests } from '@web/test-runner-core/test-helpers';
 import { chromeLauncher } from '@web/test-runner-chrome';
 import { playwrightLauncher } from '@web/test-runner-playwright';
 
-import { a11ySnapshotPlugin } from '../../dist/a11ySnapshotPlugin.js';
+import { a11ySnapshotPlugin } from '../../dist/a11ySnapshotPlugin.ts';
 
 const __dirname = import.meta.dirname;
 

packages/test-runner-commands/test/emulate-media/emulateMediaPlugin.test.ts

@@ -4,7 +4,7 @@ import { runTests } from '@web/test-runner-core/test-helpers';
 import { chromeLauncher } from '@web/test-runner-chrome';
 import { playwrightLauncher } from '@web/test-runner-playwright';
 
-import { emulateMediaPlugin } from '../../dist/emulateMediaPlugin.js';
+import { emulateMediaPlugin } from '../../dist/emulateMediaPlugin.ts';
 
 const __dirname = import.meta.dirname;
 

packages/test-runner-commands/test/file/filePlugin.test.ts

@@ -3,7 +3,7 @@ import path from 'path';
 import { runTests } from '@web/test-runner-core/test-helpers';
 import { chromeLauncher } from '@web/test-runner-chrome';
 
-import { filePlugin } from '../../dist/filePlugin.js';
+import { filePlugin } from '../../dist/filePlugin.ts';
 
 const __dirname = import.meta.dirname;
 

packages/test-runner-commands/test/select-option/selectOptionPlugin.test.ts

@@ -4,7 +4,7 @@ import { runTests } from '@web/test-runner-core/test-helpers';
 import { chromeLauncher } from '@web/test-runner-chrome';
 import { playwrightLauncher } from '@web/test-runner-playwright';
 
-import { selectOptionPlugin } from '../../dist/selectOptionPlugin.js';
+import { selectOptionPlugin } from '../../dist/selectOptionPlugin.ts';
 
 const __dirname = import.meta.dirname;
 

packages/test-runner-commands/test/send-keys/sendKeysPlugin.test.ts

@@ -4,7 +4,7 @@ import { runTests } from '@web/test-runner-core/test-helpers';
 import { chromeLauncher } from '@web/test-runner-chrome';
 import { playwrightLauncher } from '@web/test-runner-playwright';
 
-import { sendKeysPlugin } from '../../dist/sendKeysPlugin.js';
+import { sendKeysPlugin } from '../../dist/sendKeysPlugin.ts';
 
 const __dirname = import.meta.dirname;
 

packages/test-runner-commands/test/send-mouse/sendMousePlugin.test.ts

@@ -2,9 +2,9 @@ import { describe, it, before, after } from 'node:test';
 import path from 'path';
 import selenium from 'selenium-standalone';
 import { runTests } from '@web/test-runner-core/test-helpers.ts';
-import { chromeLauncher } from '@web/test-runner-chrome.ts';
-import { webdriverLauncher } from '@web/test-runner-webdriver.ts';
-import { playwrightLauncher } from '@web/test-runner-playwright.ts';
+import { chromeLauncher } from '@web/test-runner-chrome';
+import { webdriverLauncher } from '@web/test-runner-webdriver';
+import { playwrightLauncher } from '@web/test-runner-playwright';
 import { sendMousePlugin } from '../../dist/sendMousePlugin.ts';
 import { startSeleniumServer } from '../selenium-server.ts';
 

packages/test-runner-commands/test/set-user-agent/setUserAgentPlugin.test.ts

@@ -3,7 +3,7 @@ import path from 'path';
 import { runTests } from '@web/test-runner-core/test-helpers';
 import { chromeLauncher } from '@web/test-runner-chrome';
 
-import { setUserAgentPlugin } from '../../dist/setUserAgentPlugin.js';
+import { setUserAgentPlugin } from '../../dist/setUserAgentPlugin.ts';
 
 const __dirname = import.meta.dirname;
 

packages/test-runner-commands/test/set-viewport/setViewportPlugin.test.ts

@@ -5,7 +5,7 @@ import { runTests } from '@web/test-runner-core/test-helpers';
 import { chromeLauncher } from '@web/test-runner-chrome';
 import { playwrightLauncher } from '@web/test-runner-playwright';
 
-import { setViewportPlugin } from '../../dist/setViewportPlugin.js';
+import { setViewportPlugin } from '../../dist/setViewportPlugin.ts';
 
 const __dirname = import.meta.dirname;
 

packages/test-runner-commands/test/snapshot/snapshotPlugin.test.ts

@@ -3,7 +3,7 @@ import path from 'path';
 import { runTests } from '@web/test-runner-core/test-helpers';
 import { playwrightLauncher } from '@web/test-runner-playwright';
 
-import { snapshotPlugin } from '../../dist/snapshotPlugin.js';
+import { snapshotPlugin } from '../../dist/snapshotPlugin.ts';
 
 const __dirname = import.meta.dirname;
 

packages/test-runner-junit-reporter/test/junitReporter.test.ts

@@ -4,8 +4,8 @@ import { promises as fs } from 'fs';
 import path from 'path';
 import globby from 'globby';
 
-import { chromeLauncher } from '@web/test-runner-chrome.ts';
-import type { TestRunnerCoreConfig } from '@web/test-runner-core.ts';
+import { chromeLauncher } from '@web/test-runner-chrome';
+import type { TestRunnerCoreConfig } from '@web/test-runner-core';
 import { runTests } from '@web/test-runner-core/test-helpers.ts';
 import { junitReporter } from '../src/junitReporter.ts';