Basic p5, parcel, typescript setup

main.ts

@@ -0,0 +1,15 @@
+import p5 from 'p5';
+import { SCREEN_WIDTH, SCREEN_HEIGHT } from './src/constants';
+
+const sketch = (s) => {
+  s.setup = () => {
+    s.createCanvas(SCREEN_WIDTH, SCREEN_HEIGHT);
+  };
+  s.draw = () => {
+    s.background(220);
+    s.rect(200, 200, 200, 200);
+    s.print(s.mouseX, s.mouseY);
+  };
+};
+
+const p5Instance = new p5(sketch);