chore: Move to Typescript (#2783)

This PR moves the entire project to Typescript. Due to the ~1000 ignores this will lead to a messy codebase for a while, but the churn is worth it – all of those ignore comments are places that were never type-safe previously.

closes #1282

server/models/Group.test.ts

@@ -0,0 +1,56 @@
+import { CollectionGroup, GroupUser } from "@server/models";
+import { buildUser, buildGroup, buildCollection } from "@server/test/factories";
+import { flushdb } from "@server/test/support";
+
+beforeEach(() => flushdb());
+beforeEach(jest.resetAllMocks);
+describe("afterDestroy hook", () => {
+  test("should destroy associated group and collection join relations", async () => {
+    const group = await buildGroup();
+    const teamId = group.teamId;
+    const user1 = await buildUser({
+      teamId,
+    });
+    const user2 = await buildUser({
+      teamId,
+    });
+    const collection1 = await buildCollection({
+      permission: null,
+      teamId,
+    });
+    const collection2 = await buildCollection({
+      permission: null,
+      teamId,
+    });
+    const createdById = user1.id;
+    await group.addUser(user1, {
+      through: {
+        createdById,
+      },
+    });
+    await group.addUser(user2, {
+      through: {
+        createdById,
+      },
+    });
+    await collection1.addGroup(group, {
+      through: {
+        createdById,
+      },
+    });
+    await collection2.addGroup(group, {
+      through: {
+        createdById,
+      },
+    });
+    let collectionGroupCount = await CollectionGroup.count();
+    let groupUserCount = await GroupUser.count();
+    expect(collectionGroupCount).toBe(2);
+    expect(groupUserCount).toBe(2);
+    await group.destroy();
+    collectionGroupCount = await CollectionGroup.count();
+    groupUserCount = await GroupUser.count();
+    expect(collectionGroupCount).toBe(0);
+    expect(groupUserCount).toBe(0);
+  });
+});