chore: refactoring and tests, splitting up files (#12495)

2026-02-06 10:02:31 -06:00
parent a4bc883595
commit 2c58dd6203
117 changed files with 9457 additions and 5827 deletions
@@ -0,0 +1,21 @@
+export const normalizeWheelDelta = (input: { deltaY: number; deltaMode: number; rootHeight: number }) => {
+  if (input.deltaMode === 1) return input.deltaY * 40
+  if (input.deltaMode === 2) return input.deltaY * input.rootHeight
+  return input.deltaY
+}
+
+export const shouldMarkBoundaryGesture = (input: {
+  delta: number
+  scrollTop: number
+  scrollHeight: number
+  clientHeight: number
+}) => {
+  const max = input.scrollHeight - input.clientHeight
+  if (max <= 1) return true
+  if (!input.delta) return false
+
+  if (input.delta < 0) return input.scrollTop + input.delta <= 0
+
+  const remaining = max - input.scrollTop
+  return input.delta > remaining
+}