funkjunky

export const webFileToResumableDescriptor = (file, uploadId) => async function(chunkSize) {
    uploadId = uploadId || file.name;
    return {
        bytesCount: file.size,
        uploadId: uploadId,
        filename: file.name,
        generator: async function*() {
            let chunkIndex = 0;

            // While starting byte is less than the file size, continue.

funkjunky

if(module.hot) {
    module.hot.accept(() => {
        window.store.replaceReducer(reducer)
        window.cancelAnimationFrame(window.raf);
        window.raf = window.requestAnimationFrame(step)
    });
}

function step(dt) {
    graphics(window.ctx, window.store.getState(), dt);

funkjunky

//Mutable version
const flatten = (arr) =>
	arr.reduce((c, v) =>
      (Array.isArray(v))
        ? c.concat(flatten(v))
        : [...c, v]
  , []);

//or more effecient, in place
const flatten_in = (arr) =>