lit-html
Version:
30 lines • 1.04 kB
TypeScript
/**
* @license
* Copyright 2021 Google LLC
* SPDX-License-Identifier: BSD-3-Clause
*/
import { Directive, ChildPart, DirectiveParameters, DirectiveResult } from '../directive.js';
declare class Keyed<T> extends Directive {
key: unknown;
render(k: unknown, v: T): T;
update(part: ChildPart, [k, v]: DirectiveParameters<this>): T;
}
interface KeyedFunc {
<V>(k: unknown, v: V): DirectiveResult<typeof Keyed<V>>;
}
/**
* Associates a renderable value with a unique key. When the key changes, the
* previous DOM is removed and disposed before rendering the next value, even
* if the value - such as a template - is the same.
*
* This is useful for forcing re-renders of stateful components, or working
* with code that expects new data to generate new HTML elements, such as some
* animation techniques.
*/
export declare const keyed: KeyedFunc;
/**
* The type of the class that powers this directive. Necessary for naming the
* directive's return type.
*/
export type { Keyed };
//# sourceMappingURL=keyed.d.ts.map