ra-core
Version:
Core components of react-admin, a frontend Framework for building admin applications on top of REST services, using ES6, React
65 lines • 3.11 kB
JavaScript
;
var __createBinding = (this && this.__createBinding) || (Object.create ? (function(o, m, k, k2) {
if (k2 === undefined) k2 = k;
var desc = Object.getOwnPropertyDescriptor(m, k);
if (!desc || ("get" in desc ? !m.__esModule : desc.writable || desc.configurable)) {
desc = { enumerable: true, get: function() { return m[k]; } };
}
Object.defineProperty(o, k2, desc);
}) : (function(o, m, k, k2) {
if (k2 === undefined) k2 = k;
o[k2] = m[k];
}));
var __setModuleDefault = (this && this.__setModuleDefault) || (Object.create ? (function(o, v) {
Object.defineProperty(o, "default", { enumerable: true, value: v });
}) : function(o, v) {
o["default"] = v;
});
var __importStar = (this && this.__importStar) || function (mod) {
if (mod && mod.__esModule) return mod;
var result = {};
if (mod != null) for (var k in mod) if (k !== "default" && Object.prototype.hasOwnProperty.call(mod, k)) __createBinding(result, mod, k);
__setModuleDefault(result, mod);
return result;
};
var __importDefault = (this && this.__importDefault) || function (mod) {
return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.useDebouncedEvent = void 0;
var React = __importStar(require("react"));
var react_1 = require("react");
var debounce_1 = __importDefault(require("lodash/debounce"));
var useEvent_1 = require("./useEvent");
// allow the hook to work in SSR
var useLayoutEffect = typeof window !== 'undefined' ? React.useLayoutEffect : React.useEffect;
/**
* Hook somewhat equivalent to useEvent, but with a debounce
* Returns a debounced callback which will not change across re-renders unless the
* callback or delay changes
* @see https://reactjs.org/docs/hooks-faq.html#how-to-read-an-often-changing-value-from-usecallback
* @see https://github.com/facebook/react/issues/14099#issuecomment-440013892
*/
var useDebouncedEvent = function (callback, delay) {
// Create a ref that stores the debounced callback
var debouncedCallbackRef = (0, react_1.useRef)(function () {
throw new Error('Cannot call an event handler while rendering.');
});
// Keep a stable ref to the callback (in case it's an inline function for instance)
var stableCallback = (0, useEvent_1.useEvent)(callback);
// Whenever callback or delay changes, we need to update the debounced callback
useLayoutEffect(function () {
debouncedCallbackRef.current = (0, debounce_1.default)(stableCallback, delay);
}, [stableCallback, delay]);
// The function returned by useCallback will invoke the debounced callback
// Its dependencies array is empty, so it never changes across re-renders
return (0, react_1.useCallback)(function () {
var args = [];
for (var _i = 0; _i < arguments.length; _i++) {
args[_i] = arguments[_i];
}
return debouncedCallbackRef.current.apply(debouncedCallbackRef, args);
}, []);
};
exports.useDebouncedEvent = useDebouncedEvent;
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