@winglet/react-utils/dist/hooks/useSnapshot.mjs

React utility library providing custom hooks, higher-order components (HOCs), and utility functions to enhance React application development with improved reusability and functionality

import { useRef, useMemo } from 'react';
import { isObject } from '@winglet/common-utils/filter';
import { getTypeTag } from '@winglet/common-utils/lib';
import { equals } from '@winglet/common-utils/object';

const useSnapshot = (input, omit) => {
    const snapshotRef = useSnapshotReference(input, omit);
    return snapshotRef.current;
};
const useSnapshotReference = (input, omit) => {
    const snapshotRef = useRef(input);
    const typeRef = useRef(getTypeTag(input));
    const omitRef = useRef(omit && (omit instanceof Set ? omit : new Set(omit)));
    return useMemo(() => {
        if ((typeRef.current === getTypeTag(input) && isEmpty(input)) ||
            equals(snapshotRef.current, input, omitRef.current))
            return snapshotRef;
        snapshotRef.current = input;
        return snapshotRef;
    }, [input]);
};
const isEmpty = (value) => {
    if (!value)
        return true;
    else if (isObject(value)) {
        for (const _ in value)
            return false;
        return true;
    }
    else
        return false;
};

export { useSnapshot, useSnapshotReference };