@azure/cosmos/dist-esm/src/utils/atob.browser.js

// Copyright (c) Microsoft Corporation.
// Licensed under the MIT license.
let safeatob;
// base64 character set, plus padding character (=)
const b64 = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=";
// Regular expression to check formal correctness of base64 encoded strings
const b64re = /^(?:[A-Za-z\d+/]{4})*?(?:[A-Za-z\d+/]{2}(?:==)?|[A-Za-z\d+/]{3}=?)?$/;
if ("function" !== typeof atob) {
    // atob implementation for React Native
    safeatob = (str) => {
        // atob can work with strings with whitespaces, even inside the encoded part,
        // but only \t, \n, \f, \r and ' ', which can be stripped.
        str = String(str).replace(/[\t\n\f\r ]+/g, "");
        if (!b64re.test(str)) {
            throw new TypeError("Failed to execute 'atob' on 'Window': The string to be decoded is not correctly encoded.");
        }
        // Adding the padding if missing, for simplicity
        str += "==".slice(2 - (str.length & 3));
        let bitmap;
        let result = "";
        let r1;
        let r2;
        let i = 0;
        for (; i < str.length;) {
            bitmap =
                (b64.indexOf(str.charAt(i++)) << 18) |
                    (b64.indexOf(str.charAt(i++)) << 12) |
                    ((r1 = b64.indexOf(str.charAt(i++))) << 6) |
                    (r2 = b64.indexOf(str.charAt(i++)));
            result +=
                r1 === 64
                    ? String.fromCharCode((bitmap >> 16) & 255)
                    : r2 === 64
                        ? String.fromCharCode((bitmap >> 16) & 255, (bitmap >> 8) & 255)
                        : String.fromCharCode((bitmap >> 16) & 255, (bitmap >> 8) & 255, bitmap & 255);
        }
        return result;
    };
}
else {
    safeatob = atob;
}
export default safeatob;
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