Init expressjs repo

init.sh

#!/bin/sh

yarn init . -y

mkdir -p src/db/
yarn add express winston express-winston
yarn add --dev eslint babel-eslint prettier nodemon

cat > src/logger.js <<EOF
import winston from 'winston';
import expressWinston from 'express-winston';

const logger = expressWinston.logger({
  transports: [
    new winston.transports.Console()
  ],
  format: winston.format.combine(
    winston.format.colorize(),
    winston.format.json(),
  ),
  meta: true,
  msg: "HTTP {{req.method}} {{req.url}}",
  expressFormat: true,
  colorize: true,
  ignoreRoute: function (req, res) { return false; },
});

export default logger;
EOF

cat > src/index.js <<EOF
import express from 'express';
import logger from './logger';

const PORT = process.env.PORT;
if (!PORT) {
  throw new Error('PORT: no port value given');
}
if (Number.isNaN(parseInt(PORT, 10)) {
  throw new Error('PORT: invalid value given: '  PORT);
}

const app = express();
app.use(logger);

app.listen(parseInt(PORT, 10), () => {
  console.log('listening on port', portNumber);
});

EOF