.eslintrc.json

{
    "root": true,
    "extends": [
        "eslint:recommended"
    ],
    "parserOptions": {
        "ecmaVersion": 2018,
        "sourceType": "module"
    },
    "env": {
        "browser": true,
        "node": true,
        "es6": true
    },
    "rules": {
        "no-unexpected-multiline": "error",
        "block-scoped-var": "error",
        "complexity": [ 1, 15 ],
        "consistent-return": "error",
        "curly": "error",
        "default-case": "error",
        "dot-location": ["error", "property"],
        "eqeqeq": ["error", "smart"],
        "no-alert": "error",
        "no-caller": "error",
        "no-console": "error",
        "no-else-return": "error",
        "no-eval": "error",
        "no-implied-eval": "error",
        "no-extend-native": "error",
        "no-extra-bind": "error",
        "no-implicit-coercion": "error",
        "no-invalid-this": "error",
        "no-lone-blocks": "error",
        "no-loop-func": "error",
        "no-multi-spaces": "error",
        "no-native-reassign": "error",
        "no-new": "error",
        "no-param-reassign": "error",
        "no-return-assign": "error",
        "no-sequences": "error",
        "no-useless-call": "error",
        "array-bracket-spacing": ["error", "always"],
        "brace-style": ["error", "1tbs", { "allowSingleLine": true }],
        "camelcase": "error",
        "comma-style": "error",
        "consistent-this": ["error", "that"],
        "indent": ["error", 4, { "SwitchCase": 1 }],
        "jsx-quotes": "error",
        "key-spacing": ["error", { "beforeColon": false, "afterColon": true }],
        "keyword-spacing": ["error", { "before": true, "after": true }],
        "linebreak-style": ["error", "unix"],
        "max-params": ["error", 4],
        "no-multiple-empty-lines": ["error", {"max": 2}],
        "no-nested-ternary": "error",
        "no-spaced-func": "error",
        "no-trailing-spaces": "error",
        "object-curly-spacing": ["error", "always"],
        "semi": [ "error", "always" ],
        "semi-spacing": "error",
        "space-before-blocks": "error",
        "space-before-function-paren": ["error", "never"],
        "space-infix-ops": ["error", {"int32Hint": false} ],
        "arrow-body-style": "error",
        "no-confusing-arrow": "error",
        "no-class-assign": "error",
        "no-const-assign": "error",
        "no-dupe-class-members": "error",
        "no-this-before-super": "error",
        "no-var": "error",
        "yoda": ["error", "never", { "exceptRange": true }]
    },
    "overrides": [
        {
            "files": [
                "**/*.ts"
            ],
            "extends": [
                "eslint:recommended",
                "plugin:@typescript-eslint/eslint-recommended",
                "plugin:@typescript-eslint/recommended"
            ],
            "parser": "@typescript-eslint/parser",
            "plugins": [
                "@typescript-eslint"
            ],
            "rules": {
                "@typescript-eslint/ban-types": "off",
                "@typescript-eslint/triple-slash-reference": "off",
                "@typescript-eslint/no-empty-function": "off",
                "@typescript-eslint/no-explicit-any": "off",
                "@typescript-eslint/no-non-null-assertion": "off"
            }
        }
    ]
}