switch to typescript

src/CSSRandom.ts

@@ -0,0 +1,10 @@
+/**
+ * On import, sets the global css variable `--random` to `Math.random()` before each draw
+ * @module CSSRandom
+ */
+(function CSSRandom() {
+    document.documentElement.style.setProperty('--random', Math.random().toString())
+    requestAnimationFrame(CSSRandom)
+})()
+
+export {}