@lit/reactive-element/node/development/decorators/state.js

A simple low level base class for creating fast, lightweight web components

import { property } from './property.js';

/**
 * @license
 * Copyright 2017 Google LLC
 * SPDX-License-Identifier: BSD-3-Clause
 */
/*
 * IMPORTANT: For compatibility with tsickle and the Closure JS compiler, all
 * property decorators (but not class decorators) in this file that have
 * an @ExportDecoratedItems annotation must be defined as a regular function,
 * not an arrow function.
 */
/**
 * Declares a private or protected reactive property that still triggers
 * updates to the element when it changes. It does not reflect from the
 * corresponding attribute.
 *
 * Properties declared this way must not be used from HTML or HTML templating
 * systems, they're solely for properties internal to the element. These
 * properties may be renamed by optimization tools like closure compiler.
 * @category Decorator
 */
function state(options) {
    return property({
        ...options,
        // Add both `state` and `attribute` because we found a third party
        // controller that is keying off of PropertyOptions.state to determine
        // whether a field is a private internal property or not.
        state: true,
        attribute: false,
    });
}

export { state };
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