Function isNullOrUndef

packages/nerv-shared/src/index.ts:139–141

(o: any)

}

export function isNullOrUndef (o: any): o is undefined | null {
  return o === undefined || o === null
}

export function isInvalid (o: any): o is undefined | null | true | false {
  return isNullOrUndef(o) || o === true || o === false