From 45848f77cac07dac1c77680041862ba444c1f3a3 Mon Sep 17 00:00:00 2001
From: Damien George <damien@micropython.org>
Date: Wed, 24 Apr 2024 13:00:20 +1000
Subject: [PATCH] webassembly/api: Fix waiting for Emscripten module to be
 loaded.

In modularize mode, the `_createMicroPythonModule()` constructor must be
await'ed on, before `Module` is ready to use.

Signed-off-by: Damien George <damien@micropython.org>
---
 ports/webassembly/api.js | 8 ++------
 1 file changed, 2 insertions(+), 6 deletions(-)

diff --git a/ports/webassembly/api.js b/ports/webassembly/api.js
index 7d1832af4f..2459075fc5 100644
--- a/ports/webassembly/api.js
+++ b/ports/webassembly/api.js
@@ -38,7 +38,7 @@ export async function loadMicroPython(options) {
         { heapsize: 1024 * 1024, linebuffer: true },
         options,
     );
-    const Module = {};
+    let Module = {};
     Module.locateFile = (path, scriptDirectory) =>
         url || scriptDirectory + path;
     Module._textDecoder = new TextDecoder();
@@ -83,11 +83,7 @@ export async function loadMicroPython(options) {
             Module.stderr = (c) => stderr(new Uint8Array([c]));
         }
     }
-    const moduleLoaded = new Promise((r) => {
-        Module.postRun = r;
-    });
-    _createMicroPythonModule(Module);
-    await moduleLoaded;
+    Module = await _createMicroPythonModule(Module);
     globalThis.Module = Module;
     proxy_js_init();
     const pyimport = (name) => {