beherbergung/frontend/search/components/util/notEmpty.ts

11 lines
428 B
TypeScript

/**
* filter out nullish values
* https://stackoverflow.com/a/46700791/2726641
* @param value
*/
const isUndefOrEmpty = <TValue>(value: TValue | null | undefined): value is TValue => !(value === null || value === undefined)
export const filterUndefOrNull = <T>(ts?: (T | undefined | null)[] | null): T[] => ts?.filter((t: T | undefined | null): t is T => t !== undefined && t !== null) || []
export default isUndefOrEmpty