use env var to switch next.js to turbopack mode

.github/workflows/build_and_test.yml

@@ -118,7 +118,7 @@ jobs:
     uses: ./.github/workflows/build_reusable.yml
     with:
       skipForDocsOnly: 'yes'
-      afterBuild: RUST_BACKTRACE=0 NEXT_EXTERNAL_TESTS_FILTERS="$(pwd)/packages/next-swc/crates/next-dev-tests/tests-manifest.js" __INTERNAL_NEXT_DEV_TEST_TURBO_DEV=TRUE __INTERNAL_CUSTOM_TURBOPACK_BINDINGS="$(pwd)/packages/next-swc/native/next-swc.linux-x64-gnu.node" __INTERNAL_NEXT_DEV_TEST_TURBO_GLOB_MATCH="*" NEXT_E2E_TEST_TIMEOUT=240000 NEXT_TEST_MODE=dev node run-tests.js --type development --timings -c ${TEST_CONCURRENCY}
+      afterBuild: RUST_BACKTRACE=0 NEXT_EXTERNAL_TESTS_FILTERS="$(pwd)/packages/next-swc/crates/next-dev-tests/tests-manifest.js" TURBOPACK=1 __INTERNAL_CUSTOM_TURBOPACK_BINDINGS="$(pwd)/packages/next-swc/native/next-swc.linux-x64-gnu.node" NEXT_E2E_TEST_TIMEOUT=240000 NEXT_TEST_MODE=dev node run-tests.js --type development --timings -c ${TEST_CONCURRENCY}
     secrets: inherit
 
   test-next-swc-wasm:

jest.config.js

@@ -39,7 +39,7 @@ if (shouldEnableTestTrace) {
     customJestConfig.reporters = ['default']
   }
 
-  const outputDirectory = process.env.__INTERNAL_NEXT_DEV_TEST_TURBO_DEV
+  const outputDirectory = process.env.TURBOPACK
     ? '<rootDir>/turbopack-test-junit-report'
     : '<rootDir>/test-junit-report'
   customJestConfig.reporters.push([

packages/next-swc/crates/next-dev-tests/tests-manifest.js

@@ -14,7 +14,6 @@ const enabledTests = [
   'test/development/basic/define-class-fields.test.ts',
   'test/development/basic/emotion-swc.test.ts',
   'test/development/basic/legacy-decorators.test.ts',
-  'test/development/basic/styled-components-disabled.test.ts',
   'test/development/basic/tailwind-jit.test.ts',
   'test/development/basic/theme-ui.test.ts',
   'test/development/dotenv-default-expansion/index.test.ts',
@@ -23,7 +22,6 @@ const enabledTests = [
   'test/development/project-directory-with-styled-jsx-suffix/index.test.ts',
   'test/development/repeated-dev-edits/repeated-dev-edits.test.ts',
   'test/development/tsconfig-path-reloading/index.test.ts',
-  'test/development/typescript-auto-install/index.test.ts',
   'test/e2e/app-dir/_allow-underscored-root-directory/_allow-underscored-root-directory.test.ts',
   'test/e2e/app-dir/actions/app-action-export.test.ts',
   'test/e2e/app-dir/app-alias/app-alias.test.ts',
@@ -256,6 +254,8 @@ const enabledTests = [
   'test/integration/static-page-name/test/index.test.js',
   'test/integration/styled-jsx-plugin/test/index.test.js',
   'test/integration/tsconfig-verifier/test/index.test.js',
+  'test/integration/telemetry/test/page-features.test.js',
+  'test/integration/turbopack-unsupported-log/index.test.ts',
   'test/integration/turbotrace-with-webpack-worker/test/index.test.js',
   'test/integration/typeof-window-replace/test/index.test.js',
   'test/integration/typescript-baseurl/test/index.test.js',

packages/next/src/cli/next-build.ts

@@ -74,14 +74,18 @@ const nextBuild: CliCommand = (argv) => {
     printAndExit(`> No such directory exists as the project root: ${dir}`)
   }
 
+  if (args['--experimental-turbo']) {
+    process.env.TURBOPACK = '1'
+  }
+
   return build(
     dir,
     args['--profile'],
     args['--debug'] || process.env.NEXT_DEBUG_BUILD,
     !args['--no-lint'],
     args['--no-mangling'],
     args['--experimental-app-only'],
-    args['--experimental-turbo'],
+    !!process.env.TURBOPACK,
     args['--build-mode'] || 'default'
   ).catch((err) => {
     console.error('')

packages/next/src/cli/next-dev.ts

@@ -221,6 +221,10 @@ const nextDev: CliCommand = async (argv) => {
   }
 
   if (args['--turbo']) {
+    process.env.TURBOPACK = '1'
+  }
+
+  if (process.env.TURBOPACK) {
     isTurboSession = true
 
     const { validateTurboNextConfig } =

test/integration/custom-routes/test/index.test.js

@@ -2732,38 +2732,6 @@ describe('Custom routes', () => {
     runTests(true)
   })
 
-  // enable once https://github.com/vercel/turbo/pull/3894 is landed
-  describe.skip('dev mode (turbo)', () => {
-    let nextConfigContent
-
-    beforeAll(async () => {
-      // ensure cache with rewrites disabled doesn't persist
-      // after enabling rewrites
-      await fs.remove(join(appDir, '.next'))
-      nextConfigContent = await fs.readFile(nextConfigPath, 'utf8')
-      await fs.writeFile(
-        nextConfigPath,
-        nextConfigContent.replace('// no-rewrites comment', 'return []')
-      )
-
-      const tempPort = await findPort()
-      const tempApp = await launchApp(appDir, tempPort, { turbo: true })
-      await renderViaHTTP(tempPort, '/')
-
-      await killApp(tempApp)
-      await fs.writeFile(nextConfigPath, nextConfigContent)
-
-      appPort = await findPort()
-      app = await launchApp(appDir, appPort, { turbo: true })
-      buildId = 'development'
-    })
-    afterAll(async () => {
-      await fs.writeFile(nextConfigPath, nextConfigContent)
-      await killApp(app)
-    })
-    runTests(true, true)
-  })
-
   describe('no-op rewrite', () => {
     beforeAll(async () => {
       appPort = await findPort()