statsig-js/dist/utils/Base64.js

Statsig JavaScript client SDK for single user environments.

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.Base64 = void 0;
// Encoding logic from https://stackoverflow.com/a/246813/1524355, with slight modifications to make it work for binary strings
exports.Base64 = {
    _keyStr: 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=',
    _encodeBinary: function (input) {
        var output = '';
        var chr1, chr2, chr3, enc1, enc2, enc3, enc4;
        var i = 0;
        while (i < input.length) {
            chr1 = input.charCodeAt(i++);
            chr2 = input.charCodeAt(i++);
            chr3 = input.charCodeAt(i++);
            enc1 = chr1 >> 2;
            enc2 = ((chr1 & 3) << 4) | (chr2 >> 4);
            enc3 = ((chr2 & 15) << 2) | (chr3 >> 6);
            enc4 = chr3 & 63;
            if (isNaN(chr2)) {
                enc3 = enc4 = 64;
            }
            else if (isNaN(chr3)) {
                enc4 = 64;
            }
            output =
                output +
                    this._keyStr.charAt(enc1) +
                    this._keyStr.charAt(enc2) +
                    this._keyStr.charAt(enc3) +
                    this._keyStr.charAt(enc4);
        }
        return output;
    },
    encodeArrayBuffer: function (buffer) {
        var binary = '';
        var bytes = new Uint8Array(buffer);
        var len = bytes.byteLength;
        for (var i = 0; i < len; i++) {
            binary += String.fromCharCode(bytes[i]);
        }
        return exports.Base64._encodeBinary(binary);
    },
};