fix vercel#1505 and add test (vercel#1511)

prelude/bootstrap.js

@@ -1679,12 +1679,12 @@ function payloadFileSync(pointer) {
     // this one use promisify on purpose
     fs.promises.readdir = util.promisify(fs.readdir);
     fs.promises.copyFile = util.promisify(fs.copyFile);
+    fs.promises.stat = util.promisify(fs.stat);
+    fs.promises.lstat = util.promisify(fs.lstat);
 
     /*
     fs.promises.read = util.promisify(fs.read);
     fs.promises.realpath = util.promisify(fs.realpath);
-    fs.promises.stat = util.promisify(fs.stat);
-    fs.promises.lstat = util.promisify(fs.lstat);
     fs.promises.fstat = util.promisify(fs.fstat);
     fs.promises.access = util.promisify(fs.access);
   */

test/test-1505/.gitignore

@@ -0,0 +1 @@
+run-time

test/test-1505/main.js

@@ -0,0 +1,29 @@
+#!/usr/bin/env node
+
+'use strict';
+
+const path = require('path');
+const assert = require('assert');
+const utils = require('../utils.js');
+
+assert(!module.parent);
+assert(__dirname === process.cwd());
+
+const target = process.argv[2] || 'host';
+const input = './stat.js';
+const output = './run-time/test-output.exe';
+
+utils.mkdirp.sync(path.dirname(output));
+utils.pkg.sync(['--target', target, '--output', output, '.']);
+
+let left, right;
+left = utils.spawn.sync('node', [path.basename(input)], {
+  cwd: path.dirname(input),
+});
+
+right = utils.spawn.sync(output, [], {
+  cwd: path.dirname(input),
+});
+
+assert.strictEqual(left, right);
+utils.vacuum.sync(path.dirname(output));

test/test-1505/package.json

@@ -0,0 +1,6 @@
+{
+  "bin": "stat.js",
+  "pkg": {
+    "scripts": "files/*"
+  }
+}

test/test-1505/stat.js

@@ -0,0 +1,32 @@
+'use strict';
+
+const path = require('path');
+const util = require('util');
+const fs = require('fs');
+let fsp;
+
+try {
+  fsp = require('fs/promises');
+} catch (_) {
+  fsp = require('fs').promises;
+}
+
+const filePath = path.join(__dirname, 'files/test.txt');
+
+async function test() {
+  for (const key of ['stat', 'lstat']) {
+    console.log(key, 'callback');
+    const promisified = util.promisify(fs[key]);
+    console.log(serialize(await promisified(filePath)));
+
+    console.log(key, 'promise');
+    console.log(serialize(await fsp[key](filePath)));
+  }
+}
+
+function serialize(result) {
+  if (!result) return null;
+  return `${result.size} ${result.mode}`;
+}
+
+test();