benchmark: rewrite import.meta benchmark

This is a ESM benchmark, rewrite it so that we are directly
benchmarking the ESM import.meta paths instead of doing it
in startup benchmarks which are about process/worker startup.

Author: joyeecheung

benchmark/esm/import-meta.js

@@ -0,0 +1,29 @@
+'use strict';
+
+const path = require('path');
+const common = require('../common');
+const assert = require('assert');
+const bench = common.createBenchmark(main, {
+  n: [1000],
+});
+
+const file = path.resolve(__filename, '../../fixtures/esm-dir-file.mjs');
+async function load(array, n) {
+  for (let i = 0; i < n; i ++) {
+    array[i] = await import(`${file}?i=${i}`);
+  }
+  return array;
+}
+
+function main({ n }) {
+  const array = [];
+  for (let i = 0; i < n; ++i) {
+    array.push({ dirname: '', filename: '', i: 0 });
+  }
+
+  bench.start();
+  load(array, n).then((arr) => {
+    bench.end(n);
+    assert.strictEqual(arr[n - 1].filename, file);
+  });
+}

benchmark/fixtures/esm-dir-file.mjs

@@ -1,3 +1,2 @@
-import assert from 'assert';
-assert.ok(import.meta.dirname);
-assert.ok(import.meta.filename);
+export const dirname = import.meta.dirname;
+export const filename = import.meta.filename;

benchmark/fixtures/load-esm-dir-file.js

@@ -9,7 +9,6 @@ const bench = common.createBenchmark(main, {
   script: [
     'benchmark/fixtures/require-builtins',
     'test/fixtures/semicolon',
-    'benchmark/fixtures/load-esm-dir-file',
   ],
   mode: ['process', 'worker'],
   count: [30],