How to use @wordpress/priority-queue - 2 common examples

To help you get started, we’ve selected a few @wordpress/priority-queue examples, based on popular ways it is used in public projects.

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github WordPress / gutenberg / packages / data / src / components / with-select / index.js View on Github external
/**
 * WordPress dependencies
 */
import { Component } from '@wordpress/element';
import { isShallowEqualObjects } from '@wordpress/is-shallow-equal';
import { createHigherOrderComponent } from '@wordpress/compose';
import { createQueue } from '@wordpress/priority-queue';

/**
 * Internal dependencies
 */
import { RegistryConsumer } from '../registry-provider';
import { AsyncModeConsumer } from '../async-mode-provider';

const renderQueue = createQueue();

/**
 * Higher-order component used to inject state-derived props using registered
 * selectors.
 *
 * @param {Function} mapSelectToProps Function called on every state change,
 *                                   expected to return object of props to
 *                                   merge with the component's own props.
 *
 * @return {Component} Enhanced component with merged state data props.
 */
const withSelect = ( mapSelectToProps ) => createHigherOrderComponent( ( WrappedComponent ) => {
	/**
	 * Default merge props. A constant value is used as the fallback since it
	 * can be more efficiently shallow compared in case component is repeatedly
 	 * rendered without its own merge props.
github WordPress / gutenberg / packages / data / src / components / use-select / index.js View on Github external
*/
import useRegistry from '../registry-provider/use-registry';
import useAsyncMode from '../async-mode-provider/use-async-mode';

/**
 * Favor useLayoutEffect to ensure the store subscription callback always has
 * the selector from the latest render. If a store update happens between render
 * and the effect, this could cause missed/stale updates or inconsistent state.
 *
 * Fallback to useEffect for server rendered components because currently React
 * throws a warning when using useLayoutEffect in that environment.
 */
const useIsomorphicLayoutEffect =
	typeof window !== 'undefined' ? useLayoutEffect : useEffect;

const renderQueue = createQueue();

/**
 * Custom react hook for retrieving props from registered selectors.
 *
 * In general, this custom React hook follows the
 * [rules of hooks](https://reactjs.org/docs/hooks-rules.html).
 *
 * @param {Function} _mapSelect  Function called on every state change. The
 *                               returned value is exposed to the component
 *                               implementing this hook. The function receives
 *                               the `registry.select` method on the first
 *                               argument and the `registry` on the second
 *                               argument.
 * @param {Array}    deps        If provided, this memoizes the mapSelect so the
 *                               same `mapSelect` is invoked on every state
 *                               change unless the dependencies change.

@wordpress/priority-queue

Generic browser priority queue.

GPL-2.0-or-later
Latest version published 11 days ago

Package Health Score

98 / 100
Full package analysis

Popular @wordpress/priority-queue functions