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/* eslint-disable no-extend-native, func-names, space-before-function-paren, semi, space-infix-ops, max-len */
Array.prototype.first = function() {
return this[0];
}
Array.prototype.last = function() {
return this[this.length-1];
}
Array.prototype.find = Array.prototype.find || function(predicate, ...args) {
if (!this) throw new TypeError('Array.prototype.find called on null or undefined');
if (typeof predicate !== 'function') throw new TypeError('predicate must be a function');
const list = Object(this);
const thisArg = args[1];
let value = {};
for (let i = 0; i < list.length; i += 1) {
value = list[i];
if (predicate.call(thisArg, value, i, list)) return value;
}
return undefined;
};
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