Function hasNonNullableKey

modules/katamari/src/main/ts/ephox/katamari/api/Obj.ts:106–107

(obj: T, key: K)

  hasOwnProperty.call(obj, key);

export const hasNonNullableKey = <T extends {}, K extends keyof T>(obj: T, key: K): obj is T & Record<K, NonNullable<T[K]>> =>
  has(obj, key) && obj[key] !== undefined && obj[key] !== null;

export const isEmpty = (r: Record<any, any>): r is {} => {
  for (const x in r) {