compact 
Removes falsey values (false, null, 0, 0n, '', undefined, NaN) from an array.
Signature 
typescript
function compact<T>(arr: T[]): Array<Exclude<T, false | null | 0 | 0n | '' | undefined>>;Parameters 
- arr(- T[]): The input array to remove falsey values.
Returns 
(Array<Exclude<T, false | null | 0 | 0n | '' | undefined>>) A new array with all falsey values removed.
Examples 
typescript
compact([0, 0n, 1, false, 2, '', 3, null, undefined, 4, NaN, 5]);
// Returns: [1, 2, 3, 4, 5]
