Base64 to Blob

/**
 * Base64 to Blob
 * @param { string } base64 Base64
 */
const base64ToBlob = (base64 = "") => new Promise((resolve, reject) => {
    try {
        let body = base64.split(",")[1];
        let chunkSize = 1024;
        let offset = 0;
        let chunks = [];
        while (offset < body.length) {
            let chunk = body.slice(offset, offset + chunkSize);
            let buffer = Uint8Array.from(atob(chunk), c => c.charCodeAt(0)).buffer;
            chunks.push(buffer);
            offset += chunkSize;
        }
        let buffers = new Uint8Array(chunks.reduce((acc, chunk) => acc + chunk.byteLength, 0));
        let index = 0;
        chunks.forEach(chunk => {
            buffers.set(new Uint8Array(chunk), index);
            index += chunk.byteLength;
        });
        resolve(new Blob([buffers], { type: base64.split(",")[0].replace(/data:|;base64/gi, "") }));
    } catch (error) {
        reject(error);
    }
});