Rollup build

src/features/worker-utils/index.ts

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+/**
+ * Copyright 2020 Google Inc. All Rights Reserved.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+export function initEmscriptenModule<T extends EmscriptenWasm.Module>(
+  moduleFactory: EmscriptenWasm.ModuleFactory<T>,
+  wasmUrl: string,
+  workerUrl?: string,
+): Promise<T> {
+  return moduleFactory({
+    // Just to be safe, don't automatically invoke any wasm functions
+    noInitialRun: true,
+    locateFile: (url: string) => {
+      if (url.endsWith('.wasm')) return wasmUrl;
+      if (url.endsWith('.worker.js')) return workerUrl!;
+      throw Error('Unknown url in locateFile ' + url);
+    },
+  });
+}
+
+export function blobToArrayBuffer(blob: Blob): Promise<ArrayBuffer> {
+  return new Response(blob).arrayBuffer();
+}