@misterzik/espressojs/server/middleware/errorHandler.js

EspressoJS Introducing Espresso.JS, your ultimate Express configuration starting point and boilerplate. With its simplicity and lack of opinionation, EspressoJS offers plug-and-play configurations built on top of Express.

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 * EspressoJS - Error Handler Middleware
 */

const logger = require("../utils/logger");

class AppError extends Error {
  constructor(message, statusCode) {
    super(message);
    this.statusCode = statusCode;
    this.status = `${statusCode}`.startsWith("4") ? "fail" : "error";
    this.isOperational = true;

    Error.captureStackTrace(this, this.constructor);
  }
}

const errorHandler = (err, req, res, next) => {
  err.statusCode = err.statusCode || 500;
  err.status = err.status || "error";

  logger.error(
    `${err.statusCode} - ${err.message} - ${req.originalUrl} - ${req.method} - ${req.ip}`
  );

  if (process.env.NODE_ENV === "development") {
    res.status(err.statusCode).json({
      status: err.status,
      error: err,
      message: err.message,
      stack: err.stack,
    });
  } else {
    if (err.isOperational) {
      res.status(err.statusCode).json({
        status: err.status,
        message: err.message,
      });
    } else {
      logger.error("ERROR 💥", err);
      res.status(500).json({
        status: "error",
        message: "Something went wrong!",
      });
    }
  }
};

const notFoundHandler = (req, res, next) => {
  const err = new AppError(
    `Cannot find ${req.originalUrl} on this server!`,
    404
  );
  next(err);
};

const asyncHandler = (fn) => {
  return (req, res, next) => {
    Promise.resolve(fn(req, res, next)).catch(next);
  };
};

module.exports = {
  AppError,
  errorHandler,
  notFoundHandler,
  asyncHandler,
};