src/anims/Slide.tsx

import React from 'react';
import { TransitionImplementationProps } from 'remotion-transition-series/lib/components/Transition';

export const Slide: React.FC<
  TransitionImplementationProps & {
    direction?: 'up' | 'down' | 'left' | 'right';
  }
> = ({
  direction = 'left',
  progress,
  exitingElement = null,
  enteringElement = null,
}) => {
    const sign = direction === 'right' || direction === 'down' ? 1 : -1;
    const percentComplete = 100 * progress;
    const translateFunction =
      direction === 'right' || direction === 'left' ? 'translateX' : 'translateY';
    return (
      <>
        <div
          style={{
            position: 'absolute',
            left: 0,
            top: 0,
            right: 0,
            bottom: 0,
          }}
        >
          {exitingElement}
        </div>
        <div
          style={{
            position: 'absolute',
            left: 0,
            top: 0,
            right: 0,
            bottom: 0,
            transform: `${translateFunction}(${sign * (percentComplete - 100)}%)`,
          }}
        >
          {enteringElement}
        </div>
      </>
    );
  };