Implement `import.meta.main` (#2556)

* Implement `import.meta.main`

* Update main-test-1.js

* Update fs.test.ts

---------

Co-authored-by: Jarred Sumner <709451+Jarred-Sumner@users.noreply.github.com>

4 files changed, 27 insertions, 0 deletions

diff --git a/test/js/bun/resolve/import-meta.test.js b/test/js/bun/resolve/import-meta.test.js
index a95b1a0ea..c4bbdb1a6 100644
--- a/test/js/bun/resolve/import-meta.test.js
+++ b/test/js/bun/resolve/import-meta.test.js
@@ -2,6 +2,9 @@ import { it, expect } from "bun:test";
 import { mkdirSync, rmSync, writeFileSync } from "node:fs";
 import * as Module from "node:module";
 import sync from "./require-json.json";
+import { spawnSync } from "bun";
+import { bunEnv, bunExe } from "harness";
+import { join } from "node:path";
 
 const { path, dir } = import.meta;
 
@@ -9,6 +12,17 @@ it("primordials are not here!", () => {
   expect(import.meta.primordials === undefined).toBe(true);
 });
 
+it("import.meta.main", () => {
+  const { exitCode } = spawnSync({
+    cmd: [bunExe(), "run", join(import.meta.dir, "./main-test-script.js")],
+    env: bunEnv,
+    stderr: "inherit",
+    stdout: "inherit",
+    stdin: null,
+  });
+  expect(exitCode).toBe(0);
+});
+
 it("import.meta.resolveSync", () => {
   expect(import.meta.resolveSync("./" + import.meta.file, import.meta.path)).toBe(path);
   const require = Module.createRequire(import.meta.path);
diff --git a/test/js/bun/resolve/main-test-1.js b/test/js/bun/resolve/main-test-1.js
new file mode 100644
index 000000000..8e83d65e1
--- /dev/null
+++ b/test/js/bun/resolve/main-test-1.js
@@ -0,0 +1,5 @@
+if (import.meta.main) {
+  process.exit(1);
+}
+
+export const pass = true;
diff --git a/test/js/bun/resolve/main-test-script.js b/test/js/bun/resolve/main-test-script.js
new file mode 100644
index 000000000..d5b0cb67a
--- /dev/null
+++ b/test/js/bun/resolve/main-test-script.js
@@ -0,0 +1,7 @@
+import "./main-test-1";
+
+if (!import.meta.main) {
+  process.exit(1);
+}
+
+process.exit(0);
diff --git a/test/js/node/fs/fs.test.ts b/test/js/node/fs/fs.test.ts
index fa27ab246..f7b343539 100644
--- a/test/js/node/fs/fs.test.ts
+++ b/test/js/node/fs/fs.test.ts
@@ -38,6 +38,7 @@ import { ReadStream as ReadStreamStar_, WriteStream as WriteStreamStar_ } from "
 const Buffer = globalThis.Buffer || Uint8Array;
 
 if (!import.meta.dir) {
+  //@ts-expect-error
   import.meta.dir = ".";
 }