EVOLUTION-NINJA

Edit File: optional-chaining.js

"use strict"; var isValue = require("./object/is-value"); var slice = Array.prototype.slice; // eslint-disable-next-line no-unused-vars module.exports = function (value, propertyName1 /*, …propertyNamen*/) { var propertyNames = slice.call(arguments, 1), index = 0, length = propertyNames.length; while (isValue(value) && index < length) value = value[propertyNames[index++]]; return index === length ? value : undefined; };