From 18b668ac2cbd4cd0c8ea40915854ed05069409eb Mon Sep 17 00:00:00 2001
From: Pavel Savara <pavel.savara@gmail.com>
Date: Wed, 9 Aug 2023 03:07:41 +0200
Subject: [PATCH] [browser] fix order of libraryInitializers execution (#90189)

---
 src/mono/sample/wasm/browser-advanced/main.js | 10 +++++++---
 src/mono/wasm/runtime/loader/config.ts        |  6 ++++--
 2 files changed, 11 insertions(+), 5 deletions(-)

diff --git a/src/mono/sample/wasm/browser-advanced/main.js b/src/mono/sample/wasm/browser-advanced/main.js
index 7b58f77..f95fcbf 100644
--- a/src/mono/sample/wasm/browser-advanced/main.js
+++ b/src/mono/sample/wasm/browser-advanced/main.js
@@ -30,6 +30,13 @@ try {
         // 'withModuleConfig' is internal lower level API 
         // here we show how emscripten could be further configured
         // It is preferred to use specific 'with***' methods instead in all other cases.
+        .withConfig({
+            resources: {
+                modulesAfterConfigLoaded: {
+                    "advanced-sample.lib.module.js": ""
+                }
+            }
+        })
         .withModuleConfig({
             configSrc: "./blazor.boot.json",
             onConfigLoaded: (config) => {
@@ -38,9 +45,6 @@ try {
                 // config is loaded and could be tweaked before the rest of the runtime startup sequence
                 config.environmentVariables["MONO_LOG_LEVEL"] = "debug";
                 config.browserProfilerOptions = {};
-                config.resources.modulesAfterConfigLoaded = {
-                    "advanced-sample.lib.module.js": ""
-                }
             },
             preInit: () => { console.log('user code Module.preInit'); },
             preRun: () => { console.log('user code Module.preRun'); },
diff --git a/src/mono/wasm/runtime/loader/config.ts b/src/mono/wasm/runtime/loader/config.ts
index 053d769..dc7ba1e 100644
--- a/src/mono/wasm/runtime/loader/config.ts
+++ b/src/mono/wasm/runtime/loader/config.ts
@@ -228,6 +228,10 @@ export async function mono_wasm_load_config(module: DotnetModuleInternal): Promi
 
         normalizeConfig();
 
+        // scripts need to be loaded before onConfigLoaded because Blazor calls `beforeStart` export in onConfigLoaded
+        await importLibraryInitializers(loaderHelpers.config.resources?.modulesAfterConfigLoaded);
+        await invokeLibraryInitializers("onRuntimeConfigLoaded", [loaderHelpers.config]);
+
         if (module.onConfigLoaded) {
             try {
                 await module.onConfigLoaded(loaderHelpers.config, exportedRuntimeAPI);
@@ -239,8 +243,6 @@ export async function mono_wasm_load_config(module: DotnetModuleInternal): Promi
             }
         }
 
-        await importLibraryInitializers(loaderHelpers.config.resources?.modulesAfterConfigLoaded);
-        await invokeLibraryInitializers("onRuntimeConfigLoaded", [loaderHelpers.config]);
         normalizeConfig();
 
         loaderHelpers.afterConfigLoaded.promise_control.resolve(loaderHelpers.config);
-- 
2.7.4