errors.ts

import { TRPCError } from "@trpc/server";

export const TRPC_ERROR_CODE_HTTP_STATUS: Record<TRPCError["code"], number> = {
	PARSE_ERROR: 400,
	BAD_REQUEST: 400,
	NOT_FOUND: 404,
	INTERNAL_SERVER_ERROR: 500,
	UNAUTHORIZED: 401,
	FORBIDDEN: 403,
	TIMEOUT: 408,
	CONFLICT: 409,
	CLIENT_CLOSED_REQUEST: 499,
	PRECONDITION_FAILED: 412,
	PAYLOAD_TOO_LARGE: 413,
	METHOD_NOT_SUPPORTED: 405,
	TOO_MANY_REQUESTS: 429,
	UNPROCESSABLE_CONTENT: 422,
	NOT_IMPLEMENTED: 501,
};

export function getErrorFromUnknown(cause: unknown): TRPCError {
	if (cause instanceof Error && cause.name === "TRPCError") {
		return cause as TRPCError;
	}

	let errorCause: Error | undefined = undefined;
	let stack: string | undefined = undefined;

	if (cause instanceof Error) {
		errorCause = cause;
		stack = cause.stack;
	}

	const error = new TRPCError({
		message: "Internal server error",
		code: "INTERNAL_SERVER_ERROR",
		cause: errorCause,
	});

	if (stack) {
		error.stack = stack;
	}

	return error;
}