A standard morgan and chalk configuration for express logs

morgan-config.js

const morgan = require('morgan');
const chalk = require('chalk');
const { REQ_COLORS } = require('../lib/constants');

morgan.token('params', (req, res) => {
    return JSON.stringify(req.params);
});

morgan.token('query', (req, res) => {
    return JSON.stringify(req.query);
});

morgan.token('body', (req, res) => {
    return JSON.stringify(req.body);
});

morgan.token('colored-status', (req, res) => {
    const status = res.statusCode;
    const color = status >= 500 ? 'red' : status >= 400 ? 'yellow' : status >= 300 ? 'cyan' : 'green';
    return chalk[color](status);
});

morgan.token('colored-method', (req, res) => {
    const method = req.method;
    const color = REQ_COLORS[method];
    return chalk[color](method);
});

const morganMiddleware = morgan(
    (tokens, req, res) => {
        const method = tokens['colored-method'](req, res);
        const url = tokens.url(req, res);
        const status = tokens['colored-status'](req, res);
        const contentLength = tokens.res(req, res, 'content-length');
        const responseTime = tokens['response-time'](req, res);
        const params = tokens.params(req, res);
        const query = tokens.query(req, res);
        const body = tokens.body(req, res);

        return `\n${method} ${url} ${status} ${contentLength} - ${responseTime} ms Params: ${params} Query: ${query} Body: ${body}\n`;
    },
    {
        // Stream for morgan logs (you can customize this as needed)
        stream: process.stdout,
    }
);

module.exports = morganMiddleware;