test: use execPath to launch child node processes

Using execPath ensures the child processes are the same node binary without depending on PATH.

tests/legacy-cli/e2e/utils/process.ts

@@ -345,15 +345,15 @@ export function globalNpm(args: string[], env?: NodeJS.ProcessEnv) {
     );
   }
 
-  return _exec({ silent: true, env }, 'node', [require.resolve('npm'), ...args]);
+  return _exec({ silent: true, env }, process.execPath, [require.resolve('npm'), ...args]);
 }
 
 export function npm(...args: string[]) {
   return _exec({}, 'npm', args);
 }
 
 export function node(...args: string[]) {
-  return _exec({}, 'node', args);
+  return _exec({}, process.execPath, args);
 }
 
 export function git(...args: string[]) {

tests/legacy-cli/e2e/utils/project.ts

@@ -67,7 +67,7 @@ export async function prepareProjectForE2e(name: string) {
   // Often fails the first time so attempt twice if necessary.
   const runWebdriverUpdate = () =>
     exec(
-      'node',
+      process.execPath,
       'node_modules/protractor/bin/webdriver-manager',
       'update',
       '--standalone',

tests/legacy-cli/e2e/utils/registry.ts

@@ -19,10 +19,14 @@ export async function createNpmRegistry(
   configContent = configContent.replace(/\$\{HTTPS_PORT\}/g, String(httpsPort));
   await writeFile(join(registryPath, 'verdaccio.yaml'), configContent);
 
-  return spawn('node', [require.resolve('verdaccio/bin/verdaccio'), '-c', './verdaccio.yaml'], {
-    cwd: registryPath,
-    stdio: 'inherit',
-  });
+  return spawn(
+    process.execPath,
+    [require.resolve('verdaccio/bin/verdaccio'), '-c', './verdaccio.yaml'],
+    {
+      cwd: registryPath,
+      stdio: 'inherit',
+    },
+  );
 }
 
 // Token was generated using `echo -n 'testing:s3cret' | openssl base64`.