| "use strict"; |
| Object.defineProperty(exports, "__esModule", { value: true }); |
| exports.decode = exports.encode = void 0; |
| var chars = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/'; |
| // Use a lookup table to find the index. |
| var lookup = typeof Uint8Array === 'undefined' ? [] : new Uint8Array(256); |
| for (var i = 0; i < chars.length; i++) { |
| lookup[chars.charCodeAt(i)] = i; |
| } |
| var encode = function (arraybuffer) { |
| var bytes = new Uint8Array(arraybuffer), i, len = bytes.length, base64 = ''; |
| for (i = 0; i < len; i += 3) { |
| base64 += chars[bytes[i] >> 2]; |
| base64 += chars[((bytes[i] & 3) << 4) | (bytes[i + 1] >> 4)]; |
| base64 += chars[((bytes[i + 1] & 15) << 2) | (bytes[i + 2] >> 6)]; |
| base64 += chars[bytes[i + 2] & 63]; |
| } |
| if (len % 3 === 2) { |
| base64 = base64.substring(0, base64.length - 1) + '='; |
| } |
| else if (len % 3 === 1) { |
| base64 = base64.substring(0, base64.length - 2) + '=='; |
| } |
| return base64; |
| }; |
| exports.encode = encode; |
| var decode = function (base64) { |
| var bufferLength = base64.length * 0.75, len = base64.length, i, p = 0, encoded1, encoded2, encoded3, encoded4; |
| if (base64[base64.length - 1] === '=') { |
| bufferLength--; |
| if (base64[base64.length - 2] === '=') { |
| bufferLength--; |
| } |
| } |
| var arraybuffer = new ArrayBuffer(bufferLength), bytes = new Uint8Array(arraybuffer); |
| for (i = 0; i < len; i += 4) { |
| encoded1 = lookup[base64.charCodeAt(i)]; |
| encoded2 = lookup[base64.charCodeAt(i + 1)]; |
| encoded3 = lookup[base64.charCodeAt(i + 2)]; |
| encoded4 = lookup[base64.charCodeAt(i + 3)]; |
| bytes[p++] = (encoded1 << 2) | (encoded2 >> 4); |
| bytes[p++] = ((encoded2 & 15) << 4) | (encoded3 >> 2); |
| bytes[p++] = ((encoded3 & 3) << 6) | (encoded4 & 63); |
| } |
| return arraybuffer; |
| }; |
| exports.decode = decode; |
| //# sourceMappingURL=index.js.map |