.lesshintrc

{
    "fileExtensions": [".less", ".css"],

    "excludedFiles": ["./node_modules/**"],

    "newlineAfterBlock": false,

    "emptyRule": true, // If there are no options for a rule, you can simply enable it by setting it to true

    "importantRule": false, // To disable a rule completely, set it to false

    "borderZero": {
      "enabled": true,
      "style": "zero"
    },

    "decimalZero": {
      "enabled": true,
      "style": "none"
    },

    "hexLength": {
      "enabled": true,
      "style": "short"
    },

    "hexNotation": {
      "enabled": true,
      "style": "lowercase"
    },

    "hexValidation": {
      "enabled": true
    },

    "idSelector": {
      "enabled": true
    },

    "importPath": {
      "enabled": false,
      "filenameExtension": true,
      "leadingUnderscore": true
    },

    "propertyOrdering": {
      "enabled": false
    },

    "qualifyingElement": {
     "allowWithAttribute": true,
     "allowWithClass": true,
     "allowWithId": true
    },

    "singleLinePerProperty": {
      "allowSingleLineRules": true
    },

    "spaceAfterPropertyColon": {
        "enabled": true,
        "style": "one_space" // Comments are allowed
    },

    "spaceAroundOperator": {
     "style": "none"
    },

    "zeroUnit": {
      "enabled": true,
      "style": "no_unit"
    }
}