use-callback-ref/dist/es5/refToCallback.js

The same useRef, but with callback

"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;