← Back
Editing: esnext.array.is-template-object.js
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 && element === undefined))) { return false; } } return length !== 0; }; // `Array.isTemplateObject` method // https://github.com/tc39/proposal-array-is-template-object $({ target: 'Array', stat: true, sham: true, forced: true }, { isTemplateObject: function isTemplateObject(value) { if (!isFrozenStringArray(value, true)) return false; var raw = value.raw; return raw.length === value.length && isFrozenStringArray(raw, false); } });
Save File
Cancel