@workday/canvas-kit-react/dist/es6/common/lib/utils/useConstant.js

The parent module that contains all Workday Canvas Kit React components

import { useRef } from 'react';
/**
 * Get a constant value in React, only running the callback function once.  `React.useMemo` does not
 * guarantee that a function will only be run once.
 *
 * @example
 * const value = useConstant(generateUniqueId)
 */
export function useConstant(fn) {
    const ref = useRef();
    if (!ref.current) {
        ref.current = fn();
    }
    return ref.current;
}