engine mismatch, use volta

Author: RulaKhaled

dev-packages/node-integration-tests/utils/runner.ts

@@ -210,11 +210,18 @@ export function createEsmAndCjsTests(
   // Create a minimal package.json with requested dependencies (if any) and install them
   const additionalDependencies = options?.additionalDependencies ?? {};
   if (Object.keys(additionalDependencies).length > 0) {
+    // Ensure Volta picks up the monorepo's pinned Node/Yarn versions even inside the tmp dir.
+    // Combined with the explicit `volta run yarn add` below, this guarantees we use the repo's toolchain.
+    // This avoids CI engine mismatches (e.g. packages requiring Node >= 20 while the system Node is 18).
+    const monorepoRootPackageJsonPath = join(process.cwd(), '../../package.json');
     const packageJson = {
       name: 'tmp-integration-test',
       private: true,
       version: '0.0.0',
       dependencies: additionalDependencies,
+      volta: {
+        extends: monorepoRootPackageJsonPath,
+      },
     } as const;
 
     writeFileSync(join(tmpDirPath, 'package.json'), JSON.stringify(packageJson, null, 2));
@@ -228,7 +235,15 @@ export function createEsmAndCjsTests(
       });
 
       if (deps.length > 0) {
-        const result = spawnSync('yarn', ['add', '--non-interactive', ...deps], {
+        // Install using Volta when available to enforce the monorepo's pinned Node/Yarn versions.
+        // Falls back to direct yarn if Volta is not on PATH (e.g. local dev without Volta).
+        const hasVolta = spawnSync('volta', ['--version'], { encoding: 'utf8' }).status === 0;
+        const cmd = hasVolta ? 'volta' : 'yarn';
+        const args = hasVolta
+          ? ['run', 'yarn', 'add', '--non-interactive', ...deps]
+          : ['add', '--non-interactive', ...deps];
+
+        const result = spawnSync(cmd, args, {
           cwd: tmpDirPath,
           encoding: 'utf8',
         });
@@ -237,9 +252,9 @@ export function createEsmAndCjsTests(
           // eslint-disable-next-line no-console
           console.log('[additionalDependencies]', deps.join(' '));
           // eslint-disable-next-line no-console
-          console.log('[yarn stdout]', result.stdout);
+          console.log(`[${cmd} stdout]`, result.stdout);
           // eslint-disable-next-line no-console
-          console.log('[yarn stderr]', result.stderr);
+          console.log(`[${cmd} stderr]`, result.stderr);
         }
 
         if (result.error) {