TypeScript React development with ESBuild

package.json

{
  "name": "demo",
  "version": "0.0.1",
  "private": true,
  "dependencies": {
    "react": "^16.13.1",
    "react-dom": "^16.13.1"
  },
  "scripts": {
    "dev": "NODE_ENV=development node bin/run.js"
  },
  "devDependencies": {
    "@types/node": "^12.12.37",
    "@types/react": "^16.9.34",
    "@types/react-dom": "^16.9.7",
    "chokidar": "^3.4.0",
    "esbuild": "^0.4.0",
    "http-server": "^0.12.3"
  }
}

run.js

const { build } = require('esbuild')
const chokidar = require('chokidar')
const { createServer } = require('http-server')
const env = process.env.NODE_ENV

function runServer() {
    const server = createServer({
        root: "./public",
        showDir: true,
        autoIndex: false,
        gzip: true,
        brotli: true,
    })
    const PORT = 9999
    server.listen(PORT)
    console.log("Server is listen on port: " + PORT)
}
function runBuild() {
    build({
        // stdio: 'inherit',
        minify: true,
        entryPoints: ['./src/index.tsx'],
        outfile: './public/bundle.js',
        // minify: 'production' === env,
        bundle: true,
        format: 'esm',
        define: {
            "process.env.NODE_ENV": `'${env}'`
        },
        // sourcemap: 'development' === env
    }).catch((err) => {
        console.log(err)
        process.exit(1)
    })
}

chokidar.watch('./src/**', {
    ignoreInitial: true,
}).on('all', (event, path) => {
    console.log("✓ ", event, path);
    runBuild()
}).on('ready', () => {
    console.log("\n=====================================")
    console.log("➢ 进入监控状态！Waiting for changes...")
    console.log("======================================\n")
    runServer()
    runBuild()
});

tsconfig.json

{
  "compilerOptions": {
    "target": "es5",
    "lib": [
      "dom",
      "dom.iterable",
      "esnext"
    ],
    "allowJs": true,
    "skipLibCheck": true,
    "esModuleInterop": true,
    "allowSyntheticDefaultImports": true,
    "strict": true,
    "forceConsistentCasingInFileNames": true,
    "module": "esnext",
    "moduleResolution": "node",
    "resolveJsonModule": true,
    "isolatedModules": true,
    "noEmit": true,
    "jsx": "react"
  },
  "include": [
    "src"
  ]
}