fix(dev): execute dev command with shell operators (&&, ||, etc.)

src/utils/shell.ts

@@ -68,6 +68,9 @@ export const runCommand = (
   const { cwd, env = {}, spinner } = options
   const commandProcess = execa.command(command, {
     preferLocal: true,
+    // Command strings in netlify.toml may use shell operators like `&&`.
+    // execa.command() does not interpret these unless shell mode is enabled.
+    shell: true,
     // we use reject=false to avoid rejecting synchronously when the command doesn't exist
     reject: false,
     env: {

tests/integration/framework-detection.test.ts

@@ -130,6 +130,25 @@ describe.concurrent('frameworks/framework-detection', () => {
     })
   })
 
+  test('should support shell operators in `command`', async (t) => {
+    await withSiteBuilder(t, async (builder) => {
+      await builder
+        .withNetlifyToml({ config: { dev: { command: 'echo first && echo second', targetPort: 3000 } } })
+        .build()
+
+      try {
+        await withDevServer({ cwd: builder.directory }, async () => {}, true)
+        // a failure is expected since this command does not start a server
+        t.expect.unreachable()
+      } catch (err) {
+        t.expect(err).toHaveProperty('stdout')
+        const output = normalizeSnapshot((err as execa.ExecaReturnValue).stdout, { duration: true, filePath: true })
+        t.expect(output).toMatch(/\nfirst\s*\r?\n\s*second\r?\n/i)
+        t.expect(output).not.toMatch(/\nfirst\s*&&\s*echo\s+second\r?\n/i)
+      }
+    })
+  })
+
   test('should force a specific framework when configured', async (t) => {
     await withSiteBuilder(t, async (builder) => {
       await builder.withNetlifyToml({ config: { dev: { framework: 'create-react-app' } } }).build()