Add the config and all its peer dependencies
yarn add -D eslint-config-will @typescript-eslint/eslint-plugin @typescript-eslint/parser eslint eslint-config-prettier prettier typescript
Add this to your package json scripts
"scripts": {
"lint": "eslint src",
"lint:fix": "eslint --fix src",
"format": "prettier --check src",
"format:write": "prettier --write src"
}