tests

test/es-module/test-esm-import-flag.js

@@ -0,0 +1,75 @@
+'use strict';
+
+const fixtures = require('../common/fixtures');
+const assert = require('assert');
+const { spawnSync } = require('child_process');
+
+{ 
+  // known limitation:
+  // imports should not be imported when evaluating text
+  const { status, stderr, stdout } = spawnSync(
+    process.execPath,
+    [
+      '--experimental-import',
+      fixtures.path('es-modules', 'mjs-file.mjs'),
+      '-e', 'console.log("log")'
+    ],
+    { encoding: 'utf8' },
+  );
+
+  assert.strictEqual(status, 0);
+  assert.strictEqual(stderr, '');
+  assert.strictEqual(stdout, 'log\n');
+}
+
+{ 
+  const { status, stderr, stdout } = spawnSync(
+    process.execPath,
+    [
+      '--experimental-import',
+      fixtures.path('es-modules', 'mjs-file.mjs'),
+      fixtures.path('es-modules', 'cjs-file.cjs')
+    ],
+    { encoding: 'utf8' },
+  );
+
+  assert.strictEqual(status, 0);
+  assert.strictEqual(stderr, '');
+  assert.strictEqual(stdout, '.mjs file\n.cjs file\n');
+}
+
+{ 
+  const { status, stderr, stdout } = spawnSync(
+    process.execPath,
+    [
+      '--experimental-import',
+      fixtures.path('es-modules', 'mjs-file.mjs'),
+      fixtures.path('es-modules', 'mjs-file.mjs')
+    ],
+    { encoding: 'utf8' },
+  );
+
+  assert.strictEqual(status, 0);
+  assert.strictEqual(stderr, '');
+  assert.strictEqual(stdout, '.mjs file\n.mjs file\n');
+}
+
+{ 
+  let start = Date.now();
+  const { status, stderr, stdout } = spawnSync(
+    process.execPath,
+    [
+      '--experimental-import',
+      fixtures.path('es-modules', 'esm-top-level-await.mjs'),
+      fixtures.path('es-modules', 'print_imported.mjs')
+    ],
+    { encoding: 'utf8' },
+  );
+
+  assert.strictEqual(status, 0);
+  assert.strictEqual(stderr, '');
+  const output = JSON.parse(stdout);
+  assert.ok(output.time >= start);
+  assert.ok(output.time_async > start);
+  assert.ok(output.time_async_delayed >= start + 100);
+}

test/fixtures/es-modules/esm-top-level-await.mjs

@@ -0,0 +1,18 @@
+import { setTimeout } from 'timers/promises';
+
+export const time = Date.now();
+
+export const time_async = await new Promise((resolve) => {
+    process.nextTick(() => resolve(Date.now()))
+})
+
+export const time_async_delayed = await new Promise(async (resolve) => {
+    await setTimeout(100)
+    resolve(Date.now());
+});
+
+globalThis.imported = {
+    time,
+    time_async,
+    time_async_delayed
+};

test/fixtures/es-modules/print_imported.mjs

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+process.stdout.write(JSON.stringify(imported));