🚿 refactor + clean up

packages/types/randomlyFillGrid.ts

@@ -0,0 +1,21 @@
+import { Grid, Color, setColor, setColorEmpty } from "./grid";
+
+const defaultRand = (a: number, b: number) =>
+  Math.floor(Math.random() * (b - a + 1)) + a;
+
+export const randomlyFillGrid = (
+  grid: Grid,
+  {
+    colors = [1, 2, 3] as Color[],
+    emptyP = 2,
+  }: { colors?: Color[]; emptyP?: number } = {},
+  rand = defaultRand
+) => {
+  for (let x = grid.width; x--; )
+    for (let y = grid.height; y--; ) {
+      const k = rand(-emptyP, colors.length - 1);
+
+      if (k >= 0) setColor(grid, x, y, colors[k]);
+      else setColorEmpty(grid, x, y);
+    }
+};