Function fn

packages/react-reconciler/src/__tests__/ReactMemo-test.js:504–522

(props, ref)

    it('should use the inner name in the stack', async () => {
      const fn = (props, ref) => {
        return [<span />];
      };
      Object.defineProperty(fn, 'name', {value: 'Inner'});
      const MemoComponent = React.memo(fn);
      ReactNoop.render(
        <p>
          <MemoComponent />
        </p>,
      );
      await waitForAll([]);
      assertConsoleErrorDev([
        'Each child in a list should have a unique "key" prop.' +
          '\n\nCheck the top-level render call using <Inner>. It was passed a child from Inner. ' +
          'See https://react.dev/link/warning-keys for more information.\n' +
          '    in span (at **)\n' +
          '    in Inner (at **)',
      ]);
    });

    it('can use the outer displayName in the stack', async () => {
      const MemoComponent = React.memo((props, ref) => {