Decode a byte string in base64 and inflate it using zip

decode.js

import pako from "pako";

decode = async (base64) => {
        let bin = window.atob(base64)
        let bytes = new Uint8Array(bin.length)
        for (let i = 0; i < bin.length; i++) {
            bytes[i] = bin.charCodeAt(i);
        }
        let data = String.fromCharCode.apply(null, new Uint16Array(pako.inflate(bytes)));
        return JSON.parse(data);
    }