16 lines
449 B
TypeScript
16 lines
449 B
TypeScript
/**
|
|
* @license
|
|
* Copyright Google Inc. All Rights Reserved.
|
|
*
|
|
* Use of this source code is governed by an MIT-style license that can be
|
|
* found in the LICENSE file at https://angular.io/license
|
|
*/
|
|
|
|
export interface NO_CHANGE {
|
|
// This is a brand that ensures that this type can never match anything else
|
|
brand: 'NO_CHANGE';
|
|
}
|
|
|
|
/** A special value which designates that a value has not changed. */
|
|
export const NO_CHANGE = {} as NO_CHANGE;
|