.eslintrc.json

{
  "root": true,
  "globals": {
    "require": true,
    "process": true,
    "module": true,
    "chai": true,
    "__dirname": true
  },
  "env": {
    "browser": true,
    "es2021": true,
    "mocha": true
  },
  "parser": "babel-eslint",
  "parserOptions": {
    "ecmaVersion": 12,
    "sourceType": "module"
  },
  "plugins": ["prettier"],
  "extends": ["eslint:recommended", "prettier"],
  "rules": {
    "prettier/prettier": "error",
    "no-console": "warn"
  },
  "overrides": [
    {
      "files": ["**/*.{ts,tsx}"],
      "parser": "@typescript-eslint/parser",
      "parserOptions": {
        "ecmaVersion": 12,
        "sourceType": "module"
      },
      "extends": [
        "eslint:recommended",
        "plugin:@typescript-eslint/eslint-recommended",
        "plugin:@typescript-eslint/recommended",
        "prettier"
      ],
      "plugins": ["@typescript-eslint", "prettier"],
      "rules": {
        "prettier/prettier": "error",
        "@typescript-eslint/no-unused-vars": "error",
        "@typescript-eslint/no-explicit-any": ["off"]
      }
    }
  ]
}