api architecture

packages/lib/server/getServerErrorFromUnknown.ts

@@ -0,0 +1,43 @@
+import {
+  PrismaClientKnownRequestError,
+  NotFoundError,
+} from "@prisma/client/runtime";
+
+import { HttpError } from "@documenso/lib/server";
+
+export function getServerErrorFromUnknown(cause: unknown): HttpError {
+  // Error was manually thrown and does not need to be parsed.
+  if (cause instanceof HttpError) {
+    return cause;
+  }
+
+  if (cause instanceof SyntaxError) {
+    return new HttpError({
+      statusCode: 500,
+      message: "Unexpected error, please reach out for our customer support.",
+    });
+  }
+
+  if (cause instanceof PrismaClientKnownRequestError) {
+    return new HttpError({ statusCode: 400, message: cause.message, cause });
+  }
+
+  if (cause instanceof NotFoundError) {
+    return new HttpError({ statusCode: 404, message: cause.message, cause });
+  }
+
+  if (cause instanceof Error) {
+    return new HttpError({ statusCode: 500, message: cause.message, cause });
+  }
+
+  if (typeof cause === "string") {
+    // @ts-expect-error https://github.com/tc39/proposal-error-cause
+    return new Error(cause, { cause });
+  }
+
+  // Catch-All if none of the above triggered and something (even more) unexpected happend
+  return new HttpError({
+    statusCode: 500,
+    message: `Unhandled error of type '${typeof cause}'. Please reach out for our customer support.`,
+  });
+}