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node_modules/core-js/modules/web.atob.js

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+'use strict';
+var $ = require('../internals/export');
+var global = require('../internals/global');
+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 hasOwn = require('../internals/has-own-property');
+var validateArgumentsLength = require('../internals/validate-arguments-length');
+var ctoi = require('../internals/base64-map').ctoi;
+
+var disallowed = /[^\d+/a-z]/i;
+var whitespaces = /[\t\n\f\r ]+/g;
+var finalEq = /[=]{1,2}$/;
+
+var $atob = getBuiltIn('atob');
+var fromCharCode = String.fromCharCode;
+var charAt = uncurryThis(''.charAt);
+var replace = uncurryThis(''.replace);
+var exec = uncurryThis(disallowed.exec);
+
+var NO_SPACES_IGNORE = fails(function () {
+  return $atob(' ') !== '';
+});
+
+var NO_ENCODING_CHECK = !fails(function () {
+  $atob('a');
+});
+
+var NO_ARG_RECEIVING_CHECK = !NO_SPACES_IGNORE && !NO_ENCODING_CHECK && !fails(function () {
+  $atob();
+});
+
+var WRONG_ARITY = !NO_SPACES_IGNORE && !NO_ENCODING_CHECK && $atob.length !== 1;
+
+// `atob` method
+// https://html.spec.whatwg.org/multipage/webappapis.html#dom-atob
+$({ global: true, bind: true, enumerable: true, forced: NO_SPACES_IGNORE || NO_ENCODING_CHECK || NO_ARG_RECEIVING_CHECK || WRONG_ARITY }, {
+  atob: function atob(data) {
+    validateArgumentsLength(arguments.length, 1);
+    // `webpack` dev server bug on IE global methods - use call(fn, global, ...)
+    if (NO_ARG_RECEIVING_CHECK || WRONG_ARITY) return call($atob, global, data);
+    var string = replace(toString(data), whitespaces, '');
+    var output = '';
+    var position = 0;
+    var bc = 0;
+    var chr, bs;
+    if (string.length % 4 == 0) {
+      string = replace(string, finalEq, '');
+    }
+    if (string.length % 4 == 1 || exec(disallowed, string)) {
+      throw new (getBuiltIn('DOMException'))('The string is not correctly encoded', 'InvalidCharacterError');
+    }
+    while (chr = charAt(string, position++)) {
+      if (hasOwn(ctoi, chr)) {
+        bs = bc % 4 ? bs * 64 + ctoi[chr] : ctoi[chr];
+        if (bc++ % 4) output += fromCharCode(255 & bs >> (-2 * bc & 6));
+      }
+    } return output;
+  }
+});