.eslintrc.json

{
    "env": {
        "browser": true
    },
    "extends": "eslint:recommended",
    "parserOptions": {
        "ecmaFeatures": {
            "impliedStrict": true
        }
    },
    "globals": {
        "ajaxurl":             false,
        "Promise":             false,
        "jQuery":              false,
        "_":                   false,
        "Chart":               false,
        "swal":                false,
        "imagify":             true,
        "imagifyAdminBar":     true,
        "imagifyBulk":         true,
        "ImagifyGulp":         false,
        "imagifyLibrary":      true,
        "imagifyNotices":      true,
        "imagifyOptions":      true,
        "imagifyPricingModal": true,
        "imagifySwal":         true,
        "imagifyTTT":          true,
        "imagifyFiles":        true
    },
    "rules": {
        "consistent-this":            "error",
        "curly":                      [ "error", "all" ],
        "dot-notation":               [ "error", { "allowKeywords": true } ],
        "eol-last":                   "error",
        "eqeqeq":                     "error",
        "for-direction":              "error",
        "indent":                     [ "error", "tab", { "SwitchCase": 1 } ],
        "key-spacing":                [ "error", {
            "align":       {
                "beforeColon": false,
                "afterColon":  true,
                "on":          "value",
                "mode":        "minimum"
            },
            "multiLine":   {
                "beforeColon": false,
                "afterColon":  true
            }
        } ],
        "keyword-spacing":            "error",
        "linebreak-style":            [ "error", "unix" ],
        "new-cap":                    "error",
        "new-parens":                 "error",
        "no-alert":                   "error",
        "no-array-constructor":       "error",
        "no-caller":                  "error",
        "no-catch-shadow":            "error",
        "no-eval":                    "error",
        "no-extend-native":           "error",
        "no-extra-bind":              "error",
        "no-extra-parens":            [ "error", "functions" ],
        "no-implied-eval":            "error",
        "no-iterator":                "error",
        "no-label-var":               "error",
        "no-labels":                  "error",
        "no-lone-blocks":             "error",
        "no-loop-func":               "error",
        "no-multi-str":               "error",
        "no-native-reassign":         "error",
        "no-new":                     "error",
        "no-new-func":                "error",
        "no-new-object":              "error",
        "no-new-wrappers":            "error",
        "no-octal-escape":            "error",
        "no-process-exit":            "error",
        "no-proto":                   "error",
        "no-return-assign":           "error",
        "no-script-url":              "error",
        "no-sequences":               "error",
        "no-shadow":                  [ "error", { "builtinGlobals": true, "allow": [ "$this", "name" ] } ],
        "no-shadow-restricted-names": "error",
        "no-spaced-func":             "error",
        "no-trailing-spaces":         "error",
        "no-undef-init":              "error",
        "no-underscore-dangle":       "error",
        "no-unused-expressions":      "error",
        "no-use-before-define":       "error",
        "no-with":                    "error",
        "semi":                       "error",
        "semi-spacing":               [ "error", { "before": false, "after": true } ],
        "space-infix-ops":            "error",
        "space-unary-ops":            [ 2, { "words": true, "nonwords": true, "overrides": { "++": false, "--": false, "-": false } } ],
        "strict":                     [ "error", "function" ]
    }
}