micro

import { IncomingMessage, ServerResponse } from 'http'
 
export default (req: IncomingMessage, res: ServerResponse) => {
  res.end('Hello, World!')
}

npx micro

import { json } from 'micro'
 
export default async (req: IncomingMessage, res: ServerResponse) => {
  const body = await json(req)
  return { received: body }
}

import { text } from 'micro'
 
export default async (req: IncomingMessage, res: ServerResponse) => {
  const body = await text(req)
  return `You said: ${body}`
}

import { buffer } from 'micro'
 
export default async (req: IncomingMessage, res: ServerResponse) => {
  const raw = await buffer(req)
  return `Received ${raw.length} bytes`
}

import { send } from 'micro'
 
export default (req: IncomingMessage, res: ServerResponse) => {
  send(res, 200, { status: 'ok' })
}

import { createError } from 'micro'
 
export default (req: IncomingMessage, res: ServerResponse) => {
  if (!req.headers.authorization) {
    throw createError(401, 'Unauthorized')
  }
  return { authorized: true }
}

npm install --save-dev micro-dev
 
# Run in dev mode
npx micro-dev index.js

import { IncomingMessage, ServerResponse } from 'http'
 
const cors = (fn: Function) => async (req: IncomingMessage, res: ServerResponse) => {
  res.setHeader('Access-Control-Allow-Origin', '*')
  return fn(req, res)
}
 
const handler = async (req: IncomingMessage, res: ServerResponse) => {
  return { hello: 'world' }
}
 
export default cors(handler)

{
  "main": "index.js",
  "scripts": {
    "start": "micro",
    "dev": "micro-dev"
  },
  "dependencies": {
    "micro": "^10.0.0"
  },
  "devDependencies": {
    "micro-dev": "^3.0.0"
  }
}