Method hasKey

packages/core/src/transfer_state.ts:110–112

* Test whether a key exists in the store.

(key: StateKey<T>)

   * Test whether a key exists in the store.
   */
  hasKey<T>(key: StateKey<T>): boolean {
    return this.store.hasOwnProperty(key);
  }

  /**
   * Indicates whether the state is empty.