.eslintrc.json

{
    "extends": ["plugin:@typescript-eslint/base", "plugin:import/typescript"],
    "plugins": ["import"],
    "ignorePatterns": [
        "coverage/**",
        "dist/**",
        "node_modules/**",
        "*.json",
        "*.lock",
        "*.md",
        "*.svg"
    ],
    "rules": {
        "@typescript-eslint/consistent-type-assertions": "warn",
        "@typescript-eslint/no-array-constructor": "warn",
        "@typescript-eslint/no-redeclare": "warn",
        "@typescript-eslint/no-unused-expressions": [
            "error",
            {
                "allowShortCircuit": true,
                "allowTaggedTemplates": true,
                "allowTernary": true
            }
        ],
        "@typescript-eslint/no-unused-vars": [
            "warn",
            {
                "args": "none",
                "ignoreRestSiblings": true
            }
        ],
        "@typescript-eslint/no-use-before-define": [
            "warn",
            {
                "classes": false,
                "functions": false,
                "typedefs": false,
                "variables": false
            }
        ],
        "@typescript-eslint/no-useless-constructor": "warn",
        "array-callback-return": "warn",
        "dot-location": ["warn", "property"],
        "eqeqeq": ["warn", "smart"],
        "getter-return": "warn",
        "import/first": "error",
        "import/no-default-export": "warn",
        "import/no-named-as-default": "warn",
        "import/no-named-as-default-member": "warn",
        "import/no-duplicates": "warn",
        "import/order": [
            "warn",
            {
                "groups": ["builtin", "external", "internal", "parent", "sibling", "index"],
                "newlines-between": "always"
            }
        ],
        "new-parens": "warn",
        "no-caller": "warn",
        "no-cond-assign": ["warn", "except-parens"],
        "no-console": "warn",
        "no-const-assign": "warn",
        "no-control-regex": "warn",
        "no-delete-var": "warn",
        "no-dupe-args": "warn",
        "no-dupe-keys": "warn",
        "no-duplicate-case": "warn",
        "no-empty-character-class": "warn",
        "no-empty-pattern": "warn",
        "no-eval": "warn",
        "no-ex-assign": "warn",
        "no-extend-native": "warn",
        "no-extra-bind": "warn",
        "no-extra-label": "warn",
        "no-fallthrough": "warn",
        "no-func-assign": "warn",
        "no-implied-eval": "warn",
        "no-invalid-regexp": "warn",
        "no-iterator": "warn",
        "no-label-var": "warn",
        "no-labels": [
            "warn",
            {
                "allowLoop": true,
                "allowSwitch": false
            }
        ],
        "no-lone-blocks": "warn",
        "no-loop-func": "warn",
        "no-mixed-operators": [
            "warn",
            {
                "allowSamePrecedence": false,
                "groups": [
                    ["&", "|", "^", "~", "<<", ">>", ">>>"],
                    ["==", "!=", "===", "!==", ">", ">=", "<", "<="],
                    ["&&", "||"],
                    ["in", "instanceof"]
                ]
            }
        ],
        "no-multi-str": "warn",
        "no-native-reassign": "warn",
        "no-negated-in-lhs": "warn",
        "no-new-func": "warn",
        "no-new-object": "warn",
        "no-new-symbol": "warn",
        "no-new-wrappers": "warn",
        "no-obj-calls": "warn",
        "no-octal": "warn",
        "no-octal-escape": "warn",
        "no-regex-spaces": "warn",
        "no-restricted-properties": [
            "error",
            {
                "message": "Please use import() instead. More info: https://facebook.github.io/create-react-app/docs/code-splitting",
                "object": "require",
                "property": "ensure"
            },
            {
                "message": "Please use import() instead. More info: https://facebook.github.io/create-react-app/docs/code-splitting",
                "object": "System",
                "property": "import"
            }
        ],
        "no-restricted-syntax": ["warn", "WithStatement"],
        "no-script-url": "warn",
        "no-self-assign": "warn",
        "no-self-compare": "warn",
        "no-sequences": "warn",
        "no-shadow-restricted-names": "warn",
        "no-sparse-arrays": "warn",
        "no-template-curly-in-string": "warn",
        "no-this-before-super": "warn",
        "no-throw-literal": "warn",
        "no-unreachable": "warn",
        "no-unused-labels": "warn",
        "no-useless-computed-key": "warn",
        "no-useless-concat": "warn",
        "no-useless-escape": "warn",
        "no-useless-rename": [
            "warn",
            {
                "ignoreDestructuring": false,
                "ignoreExport": false,
                "ignoreImport": false
            }
        ],
        "no-whitespace-before-property": "warn",
        "no-with": "warn",
        "require-yield": "warn",
        "rest-spread-spacing": ["warn", "never"],
        "strict": ["warn", "never"],
        "unicode-bom": ["warn", "never"],
        "use-isnan": "warn",
        "valid-typeof": "warn"
    },
    "overrides": [
        {
            "files": ["./*.config.?(m|c)@(t|j)s", "./scripts/**/*.config.?(m|c)@(t|j)s"],
            "rules": {
                "import/no-default-export": "off"
            }
        },
        {
            "files": ["scripts/**/*.?(m|c)@(t|j)s"],
            "rules": {
                "no-console": "off"
            }
        }
    ]
}