ra-core/src/util/genericMemo.ts

Core components of react-admin, a frontend Framework for building admin applications on top of REST services, using ES6, React

import { FunctionComponent, memo } from 'react';

/**
 * A version of React.memo that preserves the original component type allowing it to accept generics.
 * See {@link https://stackoverflow.com/a/70890101}
 */
export const genericMemo = <T>(component: T): T => {
    const result = memo(component as FunctionComponent);

    // We have to set the displayName on both the field implementation and the memoized version.
    // On the implementation so that the memoized version can pick them up and users may reference the defaultProps in their components.
    // On the memoized version so that components that inspect their children props may read them.
    // @ts-ignore
    result.displayName = component.displayName?.replace('Impl', '');
    return result as unknown as T;
};