actual/packages/component-library/src/View.tsx

import React, { forwardRef } from 'react';
import type { HTMLProps, Ref } from 'react';

import { css, cx } from '@emotion/css';

import type { CSSProperties } from './styles';

type ViewProps = HTMLProps<HTMLDivElement> & {
  className?: string;
  style?: CSSProperties;
  nativeStyle?: CSSProperties;
  innerRef?: Ref<HTMLDivElement>;
};

export const View = forwardRef<HTMLDivElement, ViewProps>((props, ref) => {
  // The default styles are special-cased and pulled out into static
  // styles, and hardcode the class name here. View is used almost
  // everywhere and we can avoid any perf penalty that glamor would
  // incur.

  const { className = '', style, nativeStyle, innerRef, ...restProps } = props;
  return (
    <div
      {...restProps}
      ref={innerRef ?? ref}
      style={nativeStyle}
      className={cx(
        'view',
        className,
        style && Object.keys(style).length > 0 ? css(style) : undefined,
      )}
    />
  );
});

View.displayName = 'View';