blobUtilFunc.ts

//Modified code from: https://github.com/nolanlawson/blob-util/blob/master/dist/blob-util.js

function binaryStringToArrayBuffer(binary: string) {
	const length = binary.length;
	const buf = new ArrayBuffer(length);
	const arr = new Uint8Array(buf);
	let i = -1;
	while (++i < length) {
		arr[i] = binary.charCodeAt(i);
	}
	return buf;
}

function base64StringToBlob(base64: string, type: string | undefined) {
	return Promise.resolve().then(function () {
		let parts = [binaryStringToArrayBuffer(atob(base64))];
		return new Blob(parts, { type });
	});
}