8ee50178f3
Correct: `Array.from()` (it’s a static method) Incorrect: `Array.join()` (doesn’t exist; it’s a prototype method) This patch uses the common `#` syntax to denote `.prototype.`.
732 B
732 B
longestItem
Takes any number of iterable objects or objects with a length property and returns the longest one.
If multiple objects have the same length, the first one will be returned.
Returns undefined if no arguments are provided.
Use Array.prototype.reduce(), comparing the length of objects to find the longest one.
const longestItem = (val, ...vals) =>
[val, ...vals].reduce((a, x) => (x.length > a.length ? x : a));
longestItem('this', 'is', 'a', 'testcase'); // 'testcase'
longestItem(...['a', 'ab', 'abc']); // 'abc'
longestItem(...['a', 'ab', 'abc'], 'abcd'); // 'abcd'
longestItem([1, 2, 3], [1, 2], [1, 2, 3, 4, 5]); // [1, 2, 3, 4, 5]
longestItem([1, 2, 3], 'foobar'); // 'foobar'