Source maps ar runtime error stack?

[m1212e]

Hi, when bundling the server to a main.js file for easier/optimized deployment the error stacks get pretty useless. In my case a minified error log might look like this:

Error in POST /domain: P2002 
Invalid `prisma.domain.create()` invocation:


Unique constraint failed on the fields: (`name`).

 Thrown at PrismaClientKnownRequestError: 
Invalid `prisma.domain.create()` invocation:


Unique constraint failed on the fields: (`name`)
    at new PrismaClientKnownRequestError (/out/main.js:28:1417)
    at handleRequestError (/out/main.js:128:6900)
    at handleAndLogRequestError (/out/main.js:128:6228)
    at <anonymous> (/out/main.js:128:5935)
    at processTicksAndRejections (:12:39)
{"name":"PrismaClientKnownRequestError","code":"P2002","clientVersion":"5.15.0","meta":{"modelName":"Domain","target":["name"]},"originalLine":6033,"originalColumn":12}

While this is the log statement in my on error handler:

export const errorLogging = new Elysia({
  name: "errorLogging",
}).onError({ as: "global" }, ({ error, code, path, set, request }) => {
  console.error(
    `Error in ${request.method} ${path}: ${code} ${error.message}.\n\n Thrown at:\n ${error.stack}`,
  );
...
...

Because of bundling and minification my error log is not very helpful since every error will occur in that line and file, it's all in main.js
Did you consider re-mapping that information internally? E.g. something similar to this might do the job:

import { SourceMapConsumer } from "source-map-js";
import { exists, readFile } from "node:fs/promises";

async function remapStackTrace(stack: string): Promise<string> {
  let ret = "";

  for (const line of stack.split("\n")) {
    const matches =
      /(.*\()([/\\a-zA-Z\.-]{1,}):([0-9]{1,}):([0-9]{1,})(\).*)/.exec(line);
    if (!matches) {
      ret += `${line}\n`;
      continue;
    }

    const [_all, prefix, originFile, lineNo, columnNo, suffix] = matches;

    if (!originFile.endsWith(".js")) {
      ret += `${line}\n`;
      continue;
    }

    const mapFile = originFile.replaceAll(".js", ".js.map");
    if (!(await exists(mapFile))) {
      ret += `${line}\n`;
      continue;
    }

    const map = new SourceMapConsumer(
      JSON.parse(await readFile(mapFile, "utf8")),
    );
    const originalPosition = map.originalPositionFor({
      line: Number.parseInt(lineNo, 10),
      column: Number.parseInt(columnNo, 10),
    });

    ret += `${prefix}${originalPosition.source}:${originalPosition.line}:${originalPosition.column}${suffix}\n`;
  }

  return ret;
}

Which then should output more useful info!