ESLint + Prettier + Typescript setup

.eslintrc

{
	"env": {
		"commonjs": true,
		"es6": true,
		"node": true
	},
	"extends": [
		"plugin:vue/base",
		"eslint:recommended",
		"plugin:@typescript-eslint/eslint-recommended",
		"plugin:@typescript-eslint/recommended",
		"plugin:prettier/recommended",
		"prettier"
	],
	"plugins": ["prettier", "@typescript-eslint/eslint-plugin"],
	"globals": {
		"Atomics": "readonly",
		"SharedArrayBuffer": "readonly"
	},
	"parser": "@typescript-eslint/parser",
	"parserOptions": {
		"ecmaVersion": 2018,
		"sourceType": "module"
	},
	"rules": {
		"prettier/prettier": "error"
	}
}

.prettierrc

{
	"semi": true,
	"trailingComma": "all",
	"singleQuote": false,
	"useTabs": true,
	"no-var": true
}

package.json

{
  "dependencies": {
		"typescript": "^3.5.2"
  },
  "devDependencies": {
    "eslint": "^6.8.0",
    "eslint-config-prettier": "^6.9.0",
    "eslint-plugin-prettier": "^3.1.2",
		"@typescript-eslint/eslint-plugin": "^2.16.0",
		"@typescript-eslint/parser": "^2.16.0",
    "prettier": "^1.19.1"
  },
  "scripts": {
    "lint": "eslint --fix .",
  }
}

setup.sh

npm install --save-dev eslint eslint-config-prettier eslint-plugin-prettier prettier @typescript-eslint/plugin @typescript-eslint/eslint-parser