lepu-test-platform-web/node_modules/core-js/modules/esnext.array.is-template-ob...

30 lines
962 B
JavaScript

var $ = require('../internals/export');
var isArray = require('../internals/is-array');
// eslint-disable-next-line es/no-object-isfrozen -- safe
var isFrozen = Object.isFrozen;
var isFrozenStringArray = function (array, allowUndefined) {
if (!isFrozen || !isArray(array) || !isFrozen(array)) return false;
var index = 0;
var length = array.length;
var element;
while (index < length) {
element = array[index++];
if (!(typeof element === 'string' || (allowUndefined && typeof element === 'undefined'))) {
return false;
}
} return length !== 0;
};
// `Array.isTemplateObject` method
// https://github.com/tc39/proposal-array-is-template-object
$({ target: 'Array', stat: true }, {
isTemplateObject: function isTemplateObject(value) {
if (!isFrozenStringArray(value, true)) return false;
var raw = value.raw;
if (raw.length !== value.length || !isFrozenStringArray(raw, false)) return false;
return true;
}
});