You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
 
 
 

52 lines
1.3 KiB

'use strict';
Object.defineProperty(exports, '__esModule', { value: true });
var react = require('react');
function areInputsEqual(newInputs, lastInputs) {
if (newInputs.length !== lastInputs.length) {
return false;
}
for (var i = 0; i < newInputs.length; i++) {
if (newInputs[i] !== lastInputs[i]) {
return false;
}
}
return true;
}
function useMemoOne(getResult, inputs) {
var initial = react.useState(function () {
return {
inputs: inputs,
result: getResult()
};
})[0];
var isFirstRun = react.useRef(true);
var committed = react.useRef(initial);
var useCache = isFirstRun.current || Boolean(inputs && committed.current.inputs && areInputsEqual(inputs, committed.current.inputs));
var cache = useCache ? committed.current : {
inputs: inputs,
result: getResult()
};
react.useEffect(function () {
isFirstRun.current = false;
committed.current = cache;
}, [cache]);
return cache.result;
}
function useCallbackOne(callback, inputs) {
return useMemoOne(function () {
return callback;
}, inputs);
}
var useMemo = useMemoOne;
var useCallback = useCallbackOne;
exports.useCallback = useCallback;
exports.useCallbackOne = useCallbackOne;
exports.useMemo = useMemo;
exports.useMemoOne = useMemoOne;