refactor(errors): extract top-level error handling into shared utility

src/errors.ts

@@ -0,0 +1,22 @@
+import { chalkStderr } from "chalk";
+import wrapAnsi from "wrap-ansi";
+
+export function handleTopLevel(err: unknown) {
+  if (
+    typeof err === "object" &&
+    err !== null &&
+    "message" in err &&
+    typeof err.message === "string"
+  ) {
+    if (process.stderr.isTTY) {
+      const [columns] = process.stderr.getWindowSize();
+      console.error(wrapAnsi(chalkStderr.red(err.message), columns));
+    } else {
+      console.error(err.message);
+    }
+  } else {
+    console.error(String(err));
+  }
+
+  process.exit(1);
+}