App.js

import React from 'react';
import { ProcessingView } from 'expo-processing';

export default class App extends React.Component {
  render() {
    return (
      <ProcessingView style={{ flex: 1 }} sketch={this._sketch} />
    );
  }
  
  _sketch = (p) => {
    // Sets up the sketch
    p.setup = () => {

    }
    // Called every frame
    p.draw = () => {

    }
  }
}