• install npm i -D prettier
• create .prettierrc file and paste this:

{
    "semi": false,
    "trailingComma": "es5",
    "singleQuote": true,
    "printWidth": 80,
    "endOfLine": "lf",
    "tabWidth": 2
}

• add in package.json this command:

"prettier": "prettier --config .prettierrc \"src/**/*.ts\" --write"

{
    ...
    "script": {
        ...
        "prettier": "prettier --config .prettierrc \"src/**/*.ts\" --write",
        ...
    }
    ...
}

• install npm i -D eslint
• configure npm init @eslint/config
  • select:
    • To check syntax, find problems, and enforce code style
    • JavaScript modules (import/export)
    • React (is use react), None of these (is use node.js)
    • Yes (use typescript)
    • Browser (if use a widget) or Node (if use a integration)
    • Use a popular style guide
    • Standard: https://github.com/standard/standard
    • File format in: JSON

• add in package.json this command:

"lint": "eslint src --ext .js,.jsx,.ts,.tsx --ignore-pattern node_modules/"

{
    ...
    "script": {
        ...
        "lint": "eslint src --ext .js,.jsx,.ts,.tsx --ignore-pattern node_modules/",
        ...
    }
    ...
}

{
    ...
    "rules": {
        "no-console": "warn",
        TODO
    }
}

• install npm i -D eslint-config-prettier eslint-plugin-prettier
• in .eslintrc add with command:

{
    ...
    "extends": [
        ...
        "prettier"
    ],
    ...
    "plugins": [
        ...
        "prettier"
    ],
    ...
    "rules": {
        ...
        "prettier/prettier": 2
    }
    ...
}