29 lines
1.1 KiB
Plaintext
29 lines
1.1 KiB
Plaintext
"use strict";
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Object.defineProperty(exports, "__esModule", {
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value: true
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});
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exports["default"] = void 0;
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var _react = require("react");
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var diffTwoDeps = function diffTwoDeps(deps1, deps2) {
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// Let's do a reference equality check on 2 dependency list.
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// If deps1 is defined, we iterate over deps1 and do comparison on each element with equivalent element from deps2
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// As this func is used only in this hook, we assume 2 deps always have same length.
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return deps1 ? deps1.map(function (_, idx) {
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return !Object.is(deps1[idx], deps2 === null || deps2 === void 0 ? void 0 : deps2[idx]) ? idx : -1;
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}).filter(function (ele) {
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return ele >= 0;
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}) : deps2 ? deps2.map(function (_, idx) {
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return idx;
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}) : [];
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};
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var useTrackedEffect = function useTrackedEffect(effect, deps) {
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var previousDepsRef = (0, _react.useRef)(undefined);
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(0, _react.useEffect)(function () {
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var changes = diffTwoDeps(previousDepsRef.current, deps);
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var previousDeps = previousDepsRef.current;
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previousDepsRef.current = deps;
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return effect(changes, previousDeps, deps);
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}, deps);
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};
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var _default = exports["default"] = useTrackedEffect; |