test: replace fs.accessSync with fs.existsSync

PR-URL: #17446
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Anatoli Papirovski <apapirovski@mac.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>

test/parallel/test-npm-install.js

@@ -55,7 +55,5 @@ function handleExit(error, stdout, stderr) {
 
   assert.strictEqual(code, 0, `npm install got error code ${code}`);
   assert.strictEqual(signalCode, null, `unexpected signal: ${signalCode}`);
-  assert.doesNotThrow(function() {
-    fs.accessSync(`${installDir}/node_modules/package-name`);
-  });
+  assert(fs.existsSync(`${installDir}/node_modules/package-name`));
 }