serverless/lib/classes/Error.js

'use strict';
const chalk = require('chalk');

module.exports.SError = class ServerlessError extends Error {
  constructor(message) {
    super(message);
    this.name = this.constructor.name;
    this.message = message;
    Error.captureStackTrace(this, this.constructor);
  }
};

module.exports.logError = (e) => {
  const consoleLog = (message) => {
    console.log(message); // eslint-disable-line no-console
  };

  const errorType = e.name.replace(/([A-Z])/g, ' $1');
  let line = '';
  while (line.length < 56 - errorType.length) {
    line = `${line}-`;
  }

  consoleLog(chalk.yellow(` ${errorType} ${line}`));
  consoleLog(' ');
  consoleLog(chalk.yellow(`     ${e.message}`));
  consoleLog(' ');

  if (e.name !== 'ServerlessError') {
    consoleLog(chalk.red('     For debugging logs, run again after setting SLS_DEBUG env var.'));
    consoleLog(' ');
  }

  if (process.env.SLS_DEBUG) {
    consoleLog(chalk.yellow('  Stack Trace --------------------------------------------'));
    consoleLog(' ');
    consoleLog(e.stack);
    consoleLog(' ');
  }

  consoleLog(chalk.yellow('  Get Support --------------------------------------------'));
  consoleLog(`${chalk.yellow('     Docs:          ')}${chalk.white('v1.docs.serverless.com')}`);
  consoleLog(`${chalk.yellow('     Bugs:          ')}${chalk
    .white('github.com/serverless/serverless/issues')}`);

  if (e.name !== 'ServerlessError') {
    consoleLog(' ');
    consoleLog(chalk.red('     Please report this error. We think it might be a bug.'));
  }

  consoleLog(' ');
};