.stylelintrc

{
    "plugins": ["stylelint-scss"],
    "extends": ["stylelint-config-standard", "stylelint-config-standard-scss"],
    "ignoreFiles": ["dist/styles.css", "dist/test-styles.css", "dist/styles.min.css"],
    "rules": {
        "no-duplicate-selectors": true,
        "no-duplicate-at-import-rules": true,
        "declaration-no-important": true,
        "declaration-block-no-duplicate-properties": true,
        "color-no-hex": null,
        "at-rule-no-unknown": null,
        "scss/selector-no-redundant-nesting-selector": true,
        "block-no-empty": true,
        "comment-no-empty": true,
        "no-empty-source": null,
        "function-calc-no-unspaced-operator": true,
        "keyframe-declaration-no-important": true,
        "media-query-no-invalid": true,
        "number-max-precision": 3,
        "declaration-block-single-line-max-declarations": 1,
        "font-weight-notation": "numeric",
        "selector-type-case": "lower",
        "custom-property-pattern": "sp-.+",
        "keyframes-name-pattern": "sp-.+",
        "function-name-case": "lower",
        "value-keyword-case": "lower",
        "scss/operator-no-unspaced": true,
        "selector-attribute-quotes": "always",
        "comment-empty-line-before": "always",
        "color-hex-length": "long",
        "color-named": "never"
    }
}