feat(node-resizer): add direction, cleanup types

packages/node-resizer/src/utils.ts

@@ -0,0 +1,26 @@
+type GetDirectionParams = {
+  width: number;
+  prevWidth: number;
+  height: number;
+  prevHeight: number;
+  invertX: boolean;
+  invertY: boolean;
+};
+
+// returns an array of two numbers (0, 1 or -1) representing the direction of the resize
+// 0 = no change, 1 = increase, -1 = decrease
+export function getDirection({ width, prevWidth, height, prevHeight, invertX, invertY }: GetDirectionParams) {
+  const deltaWidth = width - prevWidth;
+  const deltaHeight = height - prevHeight;
+
+  const direction = [deltaWidth > 0 ? 1 : deltaWidth < 0 ? -1 : 0, deltaHeight > 0 ? 1 : deltaHeight < 0 ? -1 : 0];
+
+  if (deltaWidth && invertX) {
+    direction[0] = direction[0] * -1;
+  }
+
+  if (deltaHeight && invertY) {
+    direction[1] = direction[1] * -1;
+  }
+  return direction;
+}