Add Mono-compat loader shims to browserhost (withRuntimeOptions + legacy default export)

src/native/libs/Common/JavaScript/loader/dotnet.ts

@@ -8,7 +8,9 @@
  * It's good to keep this file small.
  */
 
-import type { DotnetHostBuilder } from "./types";
+import type { DotnetHostBuilder, DotnetModuleConfig, RuntimeAPI } from "./types";
+
+import { Module, dotnetApi } from "./cross-module";
 
 import { HostBuilder } from "./host-builder";
 import { initPolyfillsEarly } from "./polyfills";
@@ -18,7 +20,19 @@ import { dotnetInitializeModule } from ".";
 dotnetInitializeModule();
 await initPolyfillsEarly();
 
-export const dotnet: DotnetHostBuilder | undefined = new HostBuilder() as DotnetHostBuilder;
+export const dotnet: DotnetHostBuilder = new HostBuilder() as DotnetHostBuilder;
 export { exit };
 
 dotnet.withConfig(/*! dotnetBootConfig */{});
+const legacyExport = async (moduleFactory: DotnetModuleConfig | ((api: RuntimeAPI) => DotnetModuleConfig)): Promise<RuntimeAPI> => {
+    let cfg: DotnetModuleConfig = moduleFactory as any;
+    if (typeof moduleFactory === "function") {
+        cfg = moduleFactory(dotnetApi);
+    }
+    if (cfg.config) {
+        dotnet.withConfig(cfg.config);
+    }
+    Object.assign(Module, cfg);
+    return dotnet.create();
+};
+export default legacyExport;

src/native/libs/Common/JavaScript/loader/host-builder.ts

@@ -3,7 +3,7 @@
 
 import type { DotnetHostBuilder, LoaderConfig, RuntimeAPI, LoadBootResourceCallback, DotnetModuleConfig } from "./types";
 
-import { Module, dotnetApi } from "./cross-module";
+import { Module, dotnetApi, dotnetAssert } from "./cross-module";
 import { loaderConfig, mergeLoaderConfig, validateLoaderConfig } from "./config";
 import { createRuntime } from "./run";
 import { exit } from "./exit";
@@ -102,6 +102,15 @@ export class HostBuilder implements DotnetHostBuilder {
         return this;
     }
 
+    // internal
+    withRuntimeOptions(runtimeOptions: string[]): DotnetHostBuilder {
+        dotnetAssert.check(runtimeOptions && Array.isArray(runtimeOptions), "must be array of strings");
+        mergeLoaderConfig({
+            runtimeOptions
+        });
+        return this;
+    }
+
     async download(httpCacheOnly?: boolean): Promise<void> {
         try {
             validateLoaderConfig();