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

shared/embeds/InVision.test.ts

@@ -0,0 +1,21 @@
+import InVision from "./InVision";
+
+describe("InVision", () => {
+  const match = InVision.ENABLED[0];
+
+  test("to be enabled on shortlink", () => {
+    expect("https://invis.io/69PG07QYQTE".match(match)).toBeTruthy();
+  });
+
+  test("to be enabled on share", () => {
+    expect(
+      "https://projects.invisionapp.com/share/69PG07QYQTE".match(match)
+    ).toBeTruthy();
+  });
+
+  test("to not be enabled elsewhere", () => {
+    expect("https://invis.io".match(match)).toBe(null);
+    expect("https://invisionapp.com".match(match)).toBe(null);
+    expect("https://projects.invisionapp.com".match(match)).toBe(null);
+  });
+});