.eslintrc.json

{
    "env": {
        "node": true,
        "es6": true
    },
    "parserOptions": {
        "ecmaVersion": 8,
        "impliedStrict": true,
        "sourceType": "module"
    },
    "parser": "@typescript-eslint/parser",
    "plugins": [
        "@typescript-eslint"
    ],
    "rules": {
        "accessor-pairs": "off",
        "arrow-body-style": ["error", "always"],
        "array-bracket-spacing": ["error", "never"],
        "array-callback-return": "error",
        "arrow-parens": ["error", "always"],
        "arrow-spacing": "error",
        "block-spacing": "error",
        "block-scoped-var": "error",
        "brace-style": ["error", "1tbs"],
        "callback-return": ["error", [
            "callback",
            "cb",
            "next"]
        ],
        "camelcase": ["error", {
            "properties": "always"
        }],
        "comma-dangle": "error",
        "comma-spacing": ["error", {
            "before": false,
            "after": true
        }],
        "comma-style": ["error", "last"],
        "complexity": ["off", 5],
        "computed-property-spacing": ["error", "never"],
        "consistent-this": ["error", "that"],
        "consistent-return": "error",
        "curly": ["error", "all"],
        "default-case": "error",
        "dot-location": ["error", "property"],
        "dot-notation": "error",
        "eol-last": "error",
        "eqeqeq": "error",
        "for-direction": "error",
        "func-call-spacing": "error",
        "func-names": "off",
        "func-style": ["error", "expression"],
        "guard-for-in": "error",
        "handle-callback-err": "error",
        "id-length": "off",
        "id-match": "off",
        "indent": ["error", 4, {
            "SwitchCase": 1,
            "VariableDeclarator": 1
        }],
        "init-declarations": "off",
        "key-spacing": ["error", {
            "beforeColon": false,
            "afterColon": true
        }],
        "keyword-spacing": "error",
        "linebreak-style": "off",
        "lines-around-comment": "off",
        "lines-between-class-members": ["error", "always", { "exceptAfterSingleLine": true }],
        "max-len": "off",
        "max-nested-callbacks": ["error", 5],
        "max-statements-per-line": "error",
        "multiline-comment-style": ["error", "starred-block"],
        "new-cap": "error",
        "new-parens": "error",
        "newline-per-chained-call": "error",
        "no-alert": "error",
        "no-array-constructor": "error",
        "no-buffer-constructor": "error",
        "no-caller": "error",
        "no-case-declarations": "error",
        "no-cond-assign": "error",
        "no-confusing-arrow": "error",
        "no-console": "off",
        "no-const-assign": "error",
        "no-constant-condition": "error",
        "no-control-regex": "error",
        "no-debugger": "error",
        "no-delete-var": "error",
        "no-div-regex": "error",
        "no-dupe-args": "error",
        "no-dupe-class-members": "error",
        "no-dupe-keys": "error",
        "no-duplicate-case": "error",
        "no-else-return": "error",
        "no-empty": "error",
        "no-empty-character-class": "error",
        "no-empty-pattern": "error",
        "no-eq-null": "error",
        "no-ex-assign": "error",
        "no-extend-native": "error",
        "no-extra-bind": "error",
        "no-extra-boolean-cast": "error",
        "no-extra-parens": "off",
        "no-extra-semi": "error",
        "no-eval": "error",
        "no-fallthrough": "error",
        "no-floating-decimal": "error",
        "no-func-assign": "error",
        "no-global-assign": "error",
        "no-implicit-coercion": "off",
        "no-implicit-globals": "error",
        "no-implied-eval": "error",
        "no-inner-declarations": ["error", "functions"],
        "no-invalid-regexp": "error",
        "no-invalid-this": "error",
        "no-irregular-whitespace": "error",
        "no-iterator": "error",
        "no-labels": "error",
        "no-label-var": "error",
        "no-lone-blocks": "error",
        "no-lonely-if": "error",
        "no-loop-func": "error",
        "no-mixed-operators": "off",
        "no-mixed-requires": [1, true],
        "no-mixed-spaces-and-tabs": ["error", "smart-tabs"],
        "no-multiple-empty-lines": ["error", {
            "max": 2,
            "maxEOF": 0,
            "maxBOF": 0
        }],
        "no-multi-spaces": "error",
        "no-multi-str": "error",
        "no-nested-ternary": "error",
        "no-new": "error",
        "no-new-func": "error",
        "no-new-object": "error",
        "no-new-require": "error",
        "no-new-wrappers": "error",
        "no-obj-calls": "error",
        "no-octal-escape": "error",
        "no-octal": "error",
        "no-param-reassign": ["error", {
            "props": false
        }],
        "no-path-concat": "error",
        "no-plusplus": "off",
        "no-proto": "error",
        "no-process-env": "error",
        "no-process-exit": "error",
        "no-prototype-builtins": "off",
        "no-redeclare": "off",
        "no-regex-spaces": "error",
        "no-restricted-globals": "error",
        "no-restricted-modules": "error",
        "no-restricted-properties": "error",
        "no-restricted-syntax": "off",
        "no-return-assign": "error",
        "no-script-url": "error",
        "no-self-assign": "error",
        "no-self-compare": "error",
        "no-sequences": "error",
        "no-shadow-restricted-names": "error",
        "no-sparse-arrays": "error",
        "no-sync": "error",
        "no-ternary": "off",
        "no-throw-literal": "error",
        "no-trailing-spaces": "error",
        "no-undef-init": "error",
        "no-undefined": "off",
        "no-underscore-dangle": "off",
        "no-unexpected-multiline": "error",
        "no-unmodified-loop-condition": "error",
        "no-unneeded-ternary": "error",
        "no-unreachable": "error",
        "no-unsafe-finally": "error",
        "no-unsafe-negation": "error",
        "no-unused-expressions": "error",
        "no-unused-vars": "off",
        "no-use-before-define": "error",
        "no-useless-call": "error",
        "no-useless-computed-key": "error",
        "no-useless-concat": "error",
        "no-useless-escape": "error",
        "no-useless-rename": "error",
        "no-var": "error",
        "no-void": "off",
        "no-warning-comments": ["warn", {
            "terms": [ "fixme" ],
            "location": "start"
        }],
        "no-with": "error",
        "object-shorthand": "error",
        "object-curly-newline": ["error", {
            "multiline": true
        }],
        "object-curly-spacing": ["off", "always", {
            "objectsInObjects": false,
            "arraysInObjects": false
        }],
        "one-var": "off",
        "operator-assignment": ["error", "always"],
        "operator-linebreak": ["error", "after"],
        "padding-line-between-statements": [ "error",
            { "blankLine": "always", "prev": "*", "next": "return" },

            { "blankLine": "always", "prev": ["const", "let", "var"], "next": "*"},
            { "blankLine": "any", "prev": ["const", "let", "var"], "next": ["const", "let", "var"]},

            { "blankLine": "always", "prev": "directive", "next": "*" },
            { "blankLine": "any", "prev": "directive", "next": "directive" }
        ],
        "prefer-arrow-callback": "error",
        "prefer-const": "error",
        "prefer-numeric-literals": "error",
        "prefer-rest-params": "error",
        "prefer-spread": "error",
        "prefer-template": "error",
        "quotes": ["error", "single", { "allowTemplateLiterals": true }],
        "quote-props": ["error", "as-needed"],
        "radix": "off",
        "require-await": "error",
        "semi-spacing": ["error", {
            "before": false,
            "after": true
        }],
        "semi": ["error", "always"],
        "semi-style": ["error", "last"],
        "sort-keys": ["error", "asc", { "caseSensitive": false }],
        "sort-vars": "off",
        "spaced-comment": ["error", "always"],
        "space-in-parens": ["error", "never"],
        "space-unary-ops": ["error", {
            "words": true,
            "nonwords": false
        }],
        "strict": ["error", "never"], // We are using alwaysStrict=true as a compiler option of TS
        "switch-colon-spacing": ["error", { "after" : true, "before" : false }],
        "template-curly-spacing": "error",
        "use-isnan": "error",
        "unicode-bom": "error",
        "valid-jsdoc": "off",
        "valid-typeof": "error",
        "vars-on-top": "off",
        "wrap-iife": ["error", "outside"],
        "wrap-regex": "error",
        "yoda": ["error", "never"],

        "@typescript-eslint/class-name-casing": "error",
        "@typescript-eslint/explicit-member-accessibility": "error",
        "@typescript-eslint/interface-name-prefix": [ "error", "always" ],
        "@typescript-eslint/member-delimiter-style": "error",
        "@typescript-eslint/member-naming": "error",
        "@typescript-eslint/no-array-constructor": "error",
        "@typescript-eslint/no-namespace": "error",
        "@typescript-eslint/no-parameter-properties": "error",
        "@typescript-eslint/no-unused-vars": "off",
        "@typescript-eslint/no-use-before-define": "error",
        "@typescript-eslint/prefer-namespace-keyword": "error",
        "@typescript-eslint/type-annotation-spacing": "error"
    }
}