useUpdateImmediateEffect.js
5d92ed19fb80issn4frontend

useUpdateImmediateEffect.js
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			"use strict";

			exports.__esModule = true;
			exports.default = void 0;

			var _react = require("react");

			var _useStableMemo = _interopRequireDefault(require("./useStableMemo"));

			var _useWillUnmount = _interopRequireDefault(require("./useWillUnmount"));

			function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

			/**
			* An _immediate_ effect that runs an effect callback when its dependency array
			* changes. This is helpful for updates should must run during render, most
			* commonly state derived from props; a more ergonomic version of https://reactjs.org/docs/hooks-faq.html#how-do-i-implement-getderivedstatefromprops
			*
			* ```ts
			* function Example({ value }) {
			* const [intermediaryValue, setValue] = useState(value);
			*
			* useUpdateImmediateEffect(() => {
			* setValue(value)
			* }, [value])
			* ```
			*
			* @category effects
			*/
			function useUpdateImmediateEffect(effect, deps) {
			var firstRef = (0, _react.useRef)(true);
			var tearDown = (0, _react.useRef)();
			(0, _useWillUnmount.default)(function () {
			if (tearDown.current) tearDown.current();
			});
			(0, _useStableMemo.default)(function () {
			if (firstRef.current) {
			firstRef.current = false;
			return;
			}

			if (tearDown.current) tearDown.current();
			tearDown.current = effect();
			}, deps);
			}

			var _default = useUpdateImmediateEffect;
			exports.default = _default;