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.`.
295 B
295 B
coalesce
Returns the first non-null/undefined argument.
Use Array.prototype.find() to return the first non null/undefined argument.
const coalesce = (...args) => args.find(_ => ![undefined, null].includes(_));
coalesce(null, undefined, '', NaN, 'Waldo'); // ""