Function overlayElement

specs/Modal.spec.js:310–314

(props, contentElement)

  it("supports custom overlayElement", () => {
    const overlayElement = (props, contentElement) => (
      <div {...props} id="custom">
        {contentElement}
      </div>
    );

    const props = { isOpen: true, overlayElement };
    withModal(props, null, modal => {