[JSPI] - Assert that JSPI is supported by the environment. (emscripte…

…n-core#21483)
sbc100 · Mar 7, 2024 · cf81dbe · cf81dbe
1 parent d9a8f7f
commit cf81dbe
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/src/library_async.js b/src/library_async.js
@@ -40,6 +40,9 @@ addToLibrary({
     instrumentWasmImports(imports) {
 #if ASYNCIFY_DEBUG
       dbg('asyncify instrumenting imports');
+#endif
+#if ASSERTIONS && ASYNCIFY == 2
+      assert('Suspender' in WebAssembly, 'JSPI not supported by current environment. Perhaps it needs to be enabled via flags?');
 #endif
       var importPattern = {{{ new RegExp(`^(${ASYNCIFY_IMPORTS_EXCEPT_JS_LIBS.map(x => x.split('.')[1]).join('|').replace(/\*/g, '.*')})$`) }}};