.eslintrc.json

{
    "parser": "@typescript-eslint/parser",
    "parserOptions": {
        "ecmaFeatures": {
            "jsx": true
        },
        "project": "./tsconfig.json",
        "sourceType": "module"
    },
    "plugins": ["@typescript-eslint", "import", "react"],
    "env": {
        "browser": true,
        "commonjs": true,
        "es2017": true,
        "node": true,
        "jest": true
    },
    "settings": {
        "react": {
            "version": "detect"
        }
    },
    "extends": [
        "eslint:recommended",
        "plugin:react/recommended",
        "plugin:@typescript-eslint/eslint-recommended",
        "plugin:@typescript-eslint/recommended",
        "prettier",
        "prettier/@typescript-eslint"
    ],
    "rules": {
        "@typescript-eslint/explicit-function-return-type": [
            "warn",
            {
                "allowExpressions": true
            }
        ],
        "@typescript-eslint/no-explicit-any": "off",
        "@typescript-eslint/no-floating-promises": "warn",
        "@typescript-eslint/no-use-before-define": [
            "warn",
            {
                "functions": false,
                "classes": false,
                "variables": false,
                "typedefs": false
            }
        ],
        "@typescript-eslint/no-unused-vars": [
            "warn",
            {
                "args": "none",
                "ignoreRestSiblings": true
            }
        ],
        "import/order": "warn",
        "no-console": "warn",
        "react/prop-types": "off"
    },
    "overrides": [
        {
            "files": ["**/*.test.ts?(x)"],
            "rules": {
                // Disable rules that are lower value in tests
                "@typescript-eslint/explicit-function-return-type": "off",
                "@typescript-eslint/no-non-null-assertion": "off"
            }
        }
    ]
}