Bash script to scaffold a Node Typescript project + ESLint + Prettier, in VS Code

init-ts-project.sh

#!/usr/bin/env bash

create_package_json() {
    cat << EOF > package.json
{
  "name": "",
  "version": "1.0.0",
  "description": "",
  "main": "build/main.js",
  "scripts": {
    "test": "echo \"Error: no test specified\" && exit 1",
    "start": "npm run build && node build/main.js",
    "build": "npx tsc",
    "prettier": "prettier --write src/**/*.ts",
    "lint": "eslint src/**/*.ts",
    "lint:fix": "eslint src/**/*.ts --fix"
  },
  "keywords": [],
  "author": "",
  "license": "ISC"
}
EOF
}

install_typescript_eslint_prettier() {
    npm install -D \
    @tsconfig/node14 \
    @types/node \
    @typescript-eslint/eslint-plugin \
    @typescript-eslint/parser \
    eslint \
    eslint-config-prettier \
    eslint-plugin-prettier \
    prettier \
    typescript
}

create_tsconfig() {
    cat << EOF > tsconfig.json
{
  "extends": "@tsconfig/node14/tsconfig.json",
  "compileOnSave": true,
  "compilerOptions": {
      "outDir": "build",
      "lib": ["ES2020"]
  },
  "include": ["src/**/*.ts"],
  "exclude": ["node_modules"]
}
EOF
}

create_eslint_config() {
    cat << EOF > .eslintrc.json
{
  "env": {
      "es2021": true,
      "node": true
  },
  "extends": ["eslint:recommended", "plugin:@typescript-eslint/recommended", "plugin:prettier/recommended", "prettier"],
  "parser": "@typescript-eslint/parser",
  "parserOptions": {
      "ecmaVersion": 12,
      "sourceType": "module"
  },
  "plugins": ["@typescript-eslint", "prettier"],
  "rules": {
      "prettier/prettier": "error",
      "@typescript-eslint/no-unused-vars": "error",
      "@typescript-eslint/no-non-null-assertion": "off"
  }
}
EOF
    
    cat << EOF > .eslintignore
build/
EOF
}

create_prettier_config() {
    cat << EOF > .prettierrc
{
  "printWidth": 120,
  "semi": true,
  "singleQuote": true,
  "trailingComma": "es5",
  "endOfLine": "lf"
}
EOF
    
    cat << EOF > .prettierignore
build/
EOF
}

create_gitignore() {
    cat << EOF > .gitignore
node_modules/
build/
EOF
}

create_project_settings() {
    mkdir .vscode
cat << EOF > .vscode/settings.json
{
  "editor.formatOnSave": true,
  "eslint.validate": ["typescript"],
  "eslint.alwaysShowStatus": true,
  "files.eol": "\n"
}
EOF
}

init_src() {
    mkdir src
    cat << EOF > src/main.ts
console.log("It's working!");
EOF
}

init_repo() {
    git init
    git add .
    git commit -m "Initial commit"
}

create_package_json
install_typescript_eslint_prettier
create_tsconfig
create_eslint_config
create_prettier_config
create_gitignore
create_project_settings
init_src
init_repo