ArrayBuffer To Base64

arraybuffer-to-base64.ts

function arrayBufferToBase64(data: ArrayBuffer) {
    var binary = "";

    var bytes = new Uint8Array(data);
    for (var len = bytes.byteLength, i = 0; i < len; i++) {
        binary += String.fromCharCode(bytes[i]);
    }
    return window.btoa(binary);
}