Interface Input

packages/core/src/metadata/directives.ts:823–852

 * @publicApi
 */
export interface Input {
  /**
   * The name of the DOM property to which the input property is bound.
   */
  alias?: string;

  /**
   * Whether the input is required for the directive to function.
   */
  required?: boolean;

  /**
   * Function with which to transform the input value before assigning it to the directive instance.
   */
  transform?: (value: any) => any;

  /**
   * @internal
   *
   * Whether the input is a signal input.
   *
   * This option exists for JIT compatibility. Users are not expected to use this.
   * Angular needs a way to capture inputs from classes so that the internal data
   * structures can be set up. This needs to happen before the component is instantiated.
   * Due to this, for JIT compilation, signal inputs need an additional decorator
   * declaring the input. Angular provides a TS transformer to automatically handle this
   * for JIT usage (e.g. in tests).
   */
  isSignal?: boolean;
}

/**
 * @Annotation