DataView cannot be cloned This is timing out the following in WebGL 1.0.2 conformance tests: https://www.khronos.org/registry/webgl/conformance-suites/1.0.3/conformance/typedarrays/typed-arrays-in-workers.html Test case: <script> new Worker('worker.js') </script> worker.js: console.log("Foo"); buffer = new ArrayBuffer(500); dv = new DataView(buffer); postMessage(dv);