Method toHaveProperty

packages/expect/src/types.ts:277–277

* Use to check if property at provided reference keyPath exists for an object. * For checking deeply nested properties in an object you may use dot notation or an array containing * the keyPath for deep references. * * Optionally, you can provide a value to check if it's equal to the val

(
    expectedPath: string | Array<string>,
    expectedValue?: unknown,
  )

   * expect(houseForSale).toHaveProperty('kitchen.area', 20);
   */
  toHaveProperty(
    expectedPath: string | Array<string>,
    expectedValue?: unknown,
  ): R;