Setup NodeJS com Typescript

Criando o projeto

yarn init -y
git init

Express

yarn add express
yarn add @types/express -D

TypeScript

yarn add typescript -D
yarn tsc --init
yarn add ts-node-dev tsconfig-paths -D

Incluir no package.json

  "scripts": {
    "dev": "ts-node-dev -r tsconfig-paths/register --respawn --transpileOnly --ignore-watch node_modules --no-notify src/server.ts"
  },

Alterar o tsconfig.json

{
  "compilerOptions": {
    "target": "ES2017",
    "module": "CommonJS",
    "lib": ["ES6"],
    "allowJs": true,
    "outDir": "./dist",
    "rootDir": "./src",
    "removeComments": true,
    "typeRoots": ["./node_modules/@types", "./src/@types"],
    "esModuleInterop": true,
    "experimentalDecorators": true,
    "emitDecoratorMetadata": true,
    "skipLibCheck": true,
    "forceConsistentCasingInFileNames": true,
    "resolveJsonModule": true,
    "baseUrl": ".",
    "paths": {
      "@controllers/*": ["./src/app/controllers/*"],
      "@models/*": ["./src/app/models/*"],
      "@validators/*": ["./src/app/validators/*"],
      "@views/*": ["./src/app/views/*"],
      "@config/*": ["./src/config/*"]
    }
  },
  "include": ["src/**/*"]
}

Eslint

yarn add eslint -D
yarn eslint --init

Selecione

To check syntax, find problems, and enforce code style
JavaScript modules (import/export)
None of these
Marque somente Node
Use a popular style guide
Airbnb (https://github.com/airbnb/javascript)
Json
Y

Ao terminar, exclua o arquivo package-lock.json e execute o comando yarn.

yarn add -D prettier eslint-config-prettier eslint-plugin-prettier
yarn add -D eslint-plugin-node eslint-plugin-promise

Altere o arquivo .eslintrc.json

Crie o arquivo .eslintignore

Jest

yarn add jest ts-jest @types/jest -D

yarn jest --init

Seleione

Y
node
n
babel
Y

Incluir no arquivo jest.config.js

const { compilerOptions } = require("./tsconfig.json");
const { pathsToModuleNameMapper } = require("ts-jest/utils");

Alterar

// preset:undefined, para preset: "ts-jest",
// moduleNameMapper: {}, para moduleNameMapper: pathsToModuleNameMapper(compilerOptions.paths, { prefix : "<rootDir>",}),

Babel

yarn add -D @babel/cli @babel/core @babel/node @babel/preset-env @babel/preset-typescript babel-plugin-module-resolver

Crie o arquivo babel.config.js

Acrescente na tag scripts do arquivo package.json

 "build": "babel src --extensions \".js,.ts\" --out-dir dist --copy-files --no-copy-ignored",