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/Trello.tsx

@@ -0,0 +1,42 @@
+import * as React from "react";
+import Frame from "./components/Frame";
+
+const URL_REGEX = /^https:\/\/trello.com\/(c|b)\/([^/]*)(.*)?$/;
+type Props = {
+  attrs: {
+    href: string;
+    matches: string[];
+  };
+};
+
+export default class Trello extends React.Component<Props> {
+  static ENABLED = [URL_REGEX];
+
+  render() {
+    const { matches } = this.props.attrs;
+    const objectId = matches[2];
+
+    if (matches[1] === "c") {
+      return (
+        <Frame
+          // @ts-expect-error ts-migrate(2322) FIXME: Type '{ width: string; height: string; src: string... Remove this comment to see the full error message
+          width="316px"
+          height="158px"
+          src={`https://trello.com/embed/card?id=${objectId}`}
+          title={`Trello Card (${objectId})`}
+        />
+      );
+    }
+
+    return (
+      <Frame
+        {...this.props}
+        // @ts-expect-error ts-migrate(2322) FIXME: Type '{ width: string; height: string; src: string... Remove this comment to see the full error message
+        width="248px"
+        height="185px"
+        src={`https://trello.com/embed/board?id=${objectId}`}
+        title={`Trello Board (${objectId})`}
+      />
+    );
+  }
+}