1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950515253 |
- "use strict";
- Object.defineProperty(exports, "__esModule", { value: true });
- exports.useRefToCallback = exports.refToCallback = void 0;
- /**
- * Unmemoized version of {@link useRefToCallback}
- * @see {@link useRefToCallback}
- * @param ref
- */
- function refToCallback(ref) {
- return function (newValue) {
- if (typeof ref === 'function') {
- ref(newValue);
- }
- else if (ref) {
- ref.current = newValue;
- }
- };
- }
- exports.refToCallback = refToCallback;
- var nullCallback = function () { return null; };
- // lets maintain a weak ref to, well, ref :)
- // not using `kashe` to keep this package small
- var weakMem = new WeakMap();
- var weakMemoize = function (ref) {
- var usedRef = ref || nullCallback;
- var storedRef = weakMem.get(usedRef);
- if (storedRef) {
- return storedRef;
- }
- var cb = refToCallback(usedRef);
- weakMem.set(usedRef, cb);
- return cb;
- };
- /**
- * Transforms a given `ref` into `callback`.
- *
- * To transform `callback` into ref use {@link useCallbackRef|useCallbackRef(undefined, callback)}
- *
- * @param {ReactRef} ref
- * @returns {Function}
- *
- * @see https://github.com/theKashey/use-callback-ref#reftocallback
- *
- * @example
- * const ref = useRef(0);
- * const setRef = useRefToCallback(ref);
- * 👉 setRef(10);
- * ✅ ref.current === 10
- */
- function useRefToCallback(ref) {
- return weakMemoize(ref);
- }
- exports.useRefToCallback = useRefToCallback;
|