.eslintrc.json

{
    "$schema": "https://json.schemastore.org/eslintrc.json",
    "noInlineConfig": true,
    "ignorePatterns": "",
    "env": {
        "browser": true,
        "mocha": true
    },
    "parser": "@typescript-eslint/parser",
    "parserOptions": {
        "ecmaVersion": 6,
        "project": ["./tsconfig.json", "./test/tsconfig.json"]
    },
    "plugins": [
        "@typescript-eslint"
    ],
    "rules": {
        "arrow-parens": "error",
        "arrow-spacing": "error",
        "brace-style": [
            "error",
            "1tbs",
            {
                "allowSingleLine": true
            }
        ],
        "dot-notation": "error",
        "eqeqeq": "error",
        "indent": [
            "error",
            4,
            {
                "SwitchCase": 1
            }
        ],
        "keyword-spacing": "error",
        "no-alert": "error",
        "no-await-in-loop": "off",
        "no-implicit-coercion": "off",
        "no-loop-func": "error",
        "no-multi-spaces": "error",
        "no-multi-str": "error",
        "no-multiple-empty-lines": "error",
        "no-trailing-spaces": "error",
        "no-useless-return": "off",
        "no-var": "error",
        "prefer-arrow-callback": "error",
        "prefer-const": "error",
        "quotes": [
            2,
            "double",
            {
                "avoidEscape": true
            }
        ],
        "require-await": "error",
        "semi": "error",
        "space-in-parens": "off",
        "@typescript-eslint/explicit-function-return-type": "off",
        "@typescript-eslint/no-misused-promises": [
            "error",
            {
                "checksVoidReturn": false
            }
        ],
        "@typescript-eslint/semi": ["error"],
        "func-call-spacing": "error",
        "no-param-reassign": "error",
        "no-tabs": "error",
        "no-undefined": "error",
        "no-unneeded-ternary": "error",
        "no-unused-expressions": "error"
    }
}