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/Miro.test.ts

@@ -0,0 +1,28 @@
+import Miro from "./Miro";
+
+describe("Miro", () => {
+  const match = Miro.ENABLED[0];
+
+  test("to be enabled on old domain share link", () => {
+    expect(
+      "https://realtimeboard.com/app/board/o9J_k0fwiss=".match(match)
+    ).toBeTruthy();
+  });
+
+  test("to be enabled on share link", () => {
+    expect("https://miro.com/app/board/o9J_k0fwiss=".match(match)).toBeTruthy();
+  });
+
+  test("to extract the domain as part of the match for later use", () => {
+    expect(
+      // @ts-expect-error ts-migrate(2531) FIXME: Object is possibly 'null'.
+      "https://realtimeboard.com/app/board/o9J_k0fwiss=".match(match)[1]
+    ).toBe("realtimeboard");
+  });
+
+  test("to not be enabled elsewhere", () => {
+    expect("https://miro.com".match(match)).toBe(null);
+    expect("https://realtimeboard.com".match(match)).toBe(null);
+    expect("https://realtimeboard.com/features".match(match)).toBe(null);
+  });
+});