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@react-hook/timeout

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A React hook that executes a callback after a timeout ms have been exceeded and the timeout has been started

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"use strict"; exports.__esModule = true; exports.useTimeoutCallback = exports.useTimeout = void 0; var React = /*#__PURE__*/_interopRequireWildcard( /*#__PURE__*/require("react")); var _latest = /*#__PURE__*/_interopRequireDefault( /*#__PURE__*/require("@react-hook/latest")); function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; } function _getRequireWildcardCache() { if (typeof WeakMap !== "function") return null; var cache = new WeakMap(); _getRequireWildcardCache = function () { return cache; }; return cache; } function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } if (obj === null || typeof obj !== "object" && typeof obj !== "function") { return { default: obj }; } var cache = _getRequireWildcardCache(); if (cache && cache.has(obj)) { return cache.get(obj); } var newObj = {}; var hasPropertyDescriptor = Object.defineProperty && Object.getOwnPropertyDescriptor; for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) { var desc = hasPropertyDescriptor ? Object.getOwnPropertyDescriptor(obj, key) : null; if (desc && (desc.get || desc.set)) { Object.defineProperty(newObj, key, desc); } else { newObj[key] = obj[key]; } } } newObj.default = obj; if (cache) { cache.set(obj, newObj); } return newObj; } /** * A hook that sets a `timedOut` boolean flag to true after `ms` have passed and the timeout has * been started. * * @param ms The amount of time to wait before setting `timedOut` to `true` * @returns The first element is a `timedOut` boolean that is `true` when * the timeout `ms` have been exceeded and `false` otherwise. The second element is a `start` method for * starting the timeout. The third element is a `reset` method for clearing the timeout. * * @example * const [timedOut, start, reset] = useTimeout(300) * // starts the timeout * start() * // clears the timeout * reset() * // logs the timedOut state * console.log(timedOut) */ const useTimeout = (ms = 0) => { const [timedOut, setTimedOut] = React.useState(false); const [start, reset] = useTimeoutCallback(() => setTimedOut(true), ms); return [timedOut, start, reset]; }; /** * A hook that executes a callback after a timeout is reached and the clock has * been started. * * @param callback The callback you want invoked when the timeout is exceeded * @param ms The amount of time to wait before firing the callback after `start()` is invoked. * When this is `0` the callback will never fire. * @param dependencies Dependencies array for your callback. Anytime your dependencies change, * the timeout will be reset to an idle state and any pending timeouts will not invoke. * @returns The first element is a `start` method for starting the timeout. The * second element is a `reset` method for clearing the timeout. * * @example * const [start, reset] = useTimeoutCallback(() => setState('copied'), 0, [text]) * // starts the timeout * start() * // clears the timeout * reset() */ exports.useTimeout = useTimeout; const useTimeoutCallback = (callback, ms = 0) => { const [timeout, setTimeoutId] = React.useState(); const storedCallback = (0, _latest.default)(callback); // Clears existing timeouts when a new one set or the hook unmounts function _ref() { timeout && clearTimeout(timeout); } React.useEffect(() => _ref, [timeout, ms]); return [React.useCallback(() => setTimeoutId(setTimeout(storedCallback.current, ms)), [ms, storedCallback]), React.useCallback(() => setTimeoutId(undefined), [])]; }; exports.useTimeoutCallback = useTimeoutCallback;