Use NPM for smoke tests

Author: armandabric

tests/smoke/.gitignore

@@ -1,3 +1,3 @@
 node_modules
 package.json
-yarn.lock
+package-lock.json

tests/smoke/prepare.js

@@ -46,8 +46,6 @@ const preparePackageJson = reactVersion => () => {
     path.join(__dirname, 'package.json'),
     JSON.stringify(packageJson, null, 2)
   );
-
-  fs.writeFileSync(path.join(__dirname, 'yarn.lock'), '');
 };
 
 const installDependencies = () => () =>
@@ -56,7 +54,7 @@ const installDependencies = () => () =>
       return;
     }
 
-    execSync('yarn install', {
+    execSync('npm install', {
       cwd: __dirname,
       stdio: 'inherit',
     });

tests/smoke/yarn.lock

@@ -0,0 +1,8 @@
+# THIS IS AN AUTOGENERATED FILE. DO NOT EDIT THIS FILE DIRECTLY.
+# yarn lockfile v1
+
+
+react@19.0.0:
+  version "19.0.0"
+  resolved "https://registry.npmjs.org/react/-/react-19.0.0.tgz"
+  integrity sha512-V8AVnmPIICiWpGfm6GLzCR/W5FXLchHop40W4nXBmdlEceh16rCN8O8LNWm5bh5XUX91fh7KpA+W0TgMKmgTpQ==