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React - Canvas Component

Details
Component: Canvas.tsx
Language: Typescript

Error
Compiled with problems:

ERROR in src/components/Canvas.tsx:14:23

TS2531: Object is possibly 'null'.
12 | let context = {};
13 | if (canvasRef.current){
14 | const context = canvas.getContext('2d'); // canvas is null; getContext is not a function of null object
15 | contextRef.current = context;
16 | //Our first draw
17 | context.fillStyle = '#000000';

Code

import React, { useRef, useEffect } from 'react';

const Canvas = (props: JSX.IntrinsicAttributes & React.ClassAttributes<HTMLCanvasElement> & React.CanvasHTMLAttributes<HTMLCanvasElement>) => {

  const canvasRef = useRef(null);
  const contextRef = useRef(null);
  
  console.log(canvasRef);
  
  useEffect(() => {
    const canvas = canvasRef.current;
    let context = {};
    if (canvasRef.current){
      const context = canvas.getContext('2d');
      contextRef.current = context;
      //Our first draw
      context.fillStyle = '#000000';
      context.fillRect(0, 0, context.canvas.width, context.canvas.height);
    }
  }, []);

  return <canvas id='canvas' ref={canvasRef} {...props} />;
};

export default Canvas;

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