Method findOrCreateBinding

packages/context/src/context.ts:847–864

* Find or create a binding for the given key * @param key - Binding address * @param policy - Binding creation policy

(
    key: BindingAddress<T>,
    policy?: BindingCreationPolicy,
  )

   * @param policy - Binding creation policy
   */
  findOrCreateBinding<T>(
    key: BindingAddress<T>,
    policy?: BindingCreationPolicy,
  ) {
    let binding: Binding<T>;
    if (policy === BindingCreationPolicy.ALWAYS_CREATE) {
      binding = this.bind(key);
    } else if (policy === BindingCreationPolicy.NEVER_CREATE) {
      binding = this.getBinding(key);
    } else if (this.isBound(key)) {
      // CREATE_IF_NOT_BOUND - the key is bound
      binding = this.getBinding(key);
    } else {
      // CREATE_IF_NOT_BOUND - the key is not bound
      binding = this.bind(key);
    }
    return binding;
  }

  /**
   * Get the value bound to the given key.