Travis build: 1782 [cron]

test/zipWith/zipWith.js

@@ -1,11 +1,8 @@
-const zipWith = (...arrays) => {
-const length = arrays.length;
-let fn = length > 1 ? arrays[length - 1] : undefined;
-fn = typeof fn == 'function' ? (arrays.pop(), fn) : undefined;
-const maxLength = Math.max(...arrays.map(x => x.length));
-const result = Array.from({ length: maxLength }).map((_, i) => {
-return Array.from({ length: arrays.length }, (_, k) => arrays[k][i]);
-});
-return fn ? result.map(arr => fn(...arr)) : result;
+const zipWith = (...array) => {
+const fn = typeof array[array.length - 1] === 'function' ? array.pop() : undefined;
+return Array.from(
+{ length: Math.max(...array.map(a => a.length)) },
+(_, i) => (fn ? fn(...array.map(a => a[i])) : array.map(a => a[i]))
+);
 };
 module.exports = zipWith;