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- 'use strict';
- var $ = require('../internals/export');
- var globalThis = require('../internals/global-this');
- var getBuiltIn = require('../internals/get-built-in');
- var uncurryThis = require('../internals/function-uncurry-this');
- var call = require('../internals/function-call');
- var fails = require('../internals/fails');
- var toString = require('../internals/to-string');
- var validateArgumentsLength = require('../internals/validate-arguments-length');
- var i2c = require('../internals/base64-map').i2c;
-
- var $btoa = getBuiltIn('btoa');
- var charAt = uncurryThis(''.charAt);
- var charCodeAt = uncurryThis(''.charCodeAt);
-
- var BASIC = !!$btoa && !fails(function () {
- return $btoa('hi') !== 'aGk=';
- });
-
- var NO_ARG_RECEIVING_CHECK = BASIC && !fails(function () {
- $btoa();
- });
-
- var WRONG_ARG_CONVERSION = BASIC && fails(function () {
- return $btoa(null) !== 'bnVsbA==';
- });
-
- var WRONG_ARITY = BASIC && $btoa.length !== 1;
-
- // `btoa` method
- // https://html.spec.whatwg.org/multipage/webappapis.html#dom-btoa
- $({ global: true, bind: true, enumerable: true, forced: !BASIC || NO_ARG_RECEIVING_CHECK || WRONG_ARG_CONVERSION || WRONG_ARITY }, {
- btoa: function btoa(data) {
- validateArgumentsLength(arguments.length, 1);
- // `webpack` dev server bug on IE global methods - use call(fn, global, ...)
- if (BASIC) return call($btoa, globalThis, toString(data));
- var string = toString(data);
- var output = '';
- var position = 0;
- var map = i2c;
- var block, charCode;
- while (charAt(string, position) || (map = '=', position % 1)) {
- charCode = charCodeAt(string, position += 3 / 4);
- if (charCode > 0xFF) {
- throw new (getBuiltIn('DOMException'))('The string contains characters outside of the Latin1 range', 'InvalidCharacterError');
- }
- block = block << 8 | charCode;
- output += charAt(map, 63 & block >> 8 - position % 1 * 8);
- } return output;
- }
- });
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