planning

node_modules/dnd-core/lib/utils/equality.js

@@ -0,0 +1,33 @@
+export const strictEquality = (a, b) => a === b;
+/**
+ * Determine if two cartesian coordinate offsets are equal
+ * @param offsetA
+ * @param offsetB
+ */
+export function areCoordsEqual(offsetA, offsetB) {
+    if (!offsetA && !offsetB) {
+        return true;
+    }
+    else if (!offsetA || !offsetB) {
+        return false;
+    }
+    else {
+        return offsetA.x === offsetB.x && offsetA.y === offsetB.y;
+    }
+}
+/**
+ * Determines if two arrays of items are equal
+ * @param a The first array of items
+ * @param b The second array of items
+ */
+export function areArraysEqual(a, b, isEqual = strictEquality) {
+    if (a.length !== b.length) {
+        return false;
+    }
+    for (let i = 0; i < a.length; ++i) {
+        if (!isEqual(a[i], b[i])) {
+            return false;
+        }
+    }
+    return true;
+}