Make nodes editable: norms, goals and keyword triggers

test/utils/duplicateIndices.test.ts

@@ -0,0 +1,22 @@
+import duplicateIndices from "../../src/utils/duplicateIndices.ts";
+
+describe("duplicateIndices (unit)", () => {
+  it("returns an empty array for empty input", () => {
+    expect(duplicateIndices<number>([])).toEqual([]);
+  });
+
+  it("returns an empty array when no duplicates exist", () => {
+    expect(duplicateIndices([1, 2, 3, 4])).toEqual([]);
+  });
+
+  it("returns all positions for every duplicated value", () => {
+    const result = duplicateIndices(["a", "b", "a", "c", "b", "b"]);
+    expect(result.sort()).toEqual([0, 1, 2, 4, 5]);
+  });
+
+  it("only treats identical references as duplicate objects", () => {
+    const shared = { v: 1 };
+    const result = duplicateIndices([shared, { v: 1 }, shared, shared]);
+    expect(result.sort()).toEqual([0, 2, 3]);
+  });
+});