GitHub 6248★

Check if an array is empty

JavaScript version

// `arr` is an array
const isEmpty = (arr) => Array.isArray(arr) && !arr.length;

TypeScript version

const isEmpty = <T,_>(arr: T[]): boolean => Array.isArray(arr) && !arr.length;

Examples

isEmpty([]); // true
isEmpty([1, 2, 3]); // false
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