.eslintrc

{
  "root": true,
  "env": { "browser": true, "node": true },
  "parser": "@typescript-eslint/parser",
  "parserOptions": {
    "project": "tsconfig.json"
  },
  "plugins": [
    "@typescript-eslint",
    "prettier"
  ],
  "rules": {
    "no-console": 1, // Means warning
    "prettier/prettier": 2 // Means error
  },
  "overrides": [
    {
      "files": [ "**/*.ts" ],
      "extends": [
        "eslint:recommended",
        "prettier",
        "plugin:@typescript-eslint/eslint-recommended",
        "plugin:@typescript-eslint/recommended"    
      ],
      "rules": {
        "@typescript-eslint/no-inferrable-types": "off",
      }
    },
    {
      "files": [ "src/**/*.js" ],
      "extends": [
        "eslint:recommended",
        "prettier"
      ]
    },
    {
      "files": [ "tests/**/*.js" ],
      "extends": [
        "eslint:recommended",
        "prettier"
      ],
      "rules": {
        "no-restricted-globals": 0,
        "no-undef": 0,
        "no-undef-init": 0
      }
    }
  ]
}