.lesshintrc

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

  "excludedFiles": [],

  "attributeQuotes": {
    "enabled": true,
    "severity": "error",
    "style": "single"
  },

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

  "comment": {
    "enabled": true,
    "severity": "warning",
    "allowed": "^!"
  },

  "decimalZero": {
    "enabled": true,
    "severity": "error",
    "style": "leading"
  },

  "duplicateProperty": {
    "enabled": true,
    "severity": "warning",
    "exclude": []
  },

  "emptyRule": {
    "enabled": true,
    "severity": "warning"
  },

  "finalNewline": {
    "enabled": true,
    "severity": "warning"
  },

  "hexLength": {
    "enabled": true,
    "severity": "error",
    "style": "long"
  },

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

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

  "idSelector": {
    "enabled": true,
    "severity": "error",
    "exclude": []
  },

  "importantRule": {
    "enabled": true,
    "severity": "warning"
  },

  "importPath": {
    "enabled": true,
    "severity": "error",
    "filenameExtension": false,
    "leadingUnderscore": false,
    "exclude": []
  },

  "maxCharPerLine" : {
    "enabled": true,
    "severity": "warning",
    "limit": 100
  },

  "newlineAfterBlock": {
    "enabled": true,
    "severity": "error"
  },

  "propertyOrdering": {
    "enabled": true,
    "severity": "error",
    "style": "alpha"
  },

  "propertyUnits": {
    "enabled": true,
    "severity": "error",
    "valid": [
      "ch", "em", "ex", "rem",
      "cm", "in", "mm", "pc", "pt", "px", "q",
      "vh", "vw", "vmin", "vmax",
      "deg", "grad", "rad", "turn",
      "ms", "s",
      "Hz", "kHz",
      "dpi", "dpcm", "dppx",
      "%"
    ],
    "invalid": [],
    "properties": {}
  },

  "qualifyingElement": {
    "enabled": true,
    "severity": "error",
    "allowWithId": false,
    "allowWithClass": true,
    "allowWithAttribute": true
  },

  "selectorNaming": {
    "enabled": true,
    "severity": "error",
    "disallowUppercase": false,
    "disallowUnderscore": true,
    "disallowDash": false,
    "exclude": []
  },

  "singleLinePerProperty": {
    "enabled": true,
    "severity": "error"
  },

  "singleLinePerSelector": {
    "enabled": true,
    "severity": "error",
    "style": "none"
  },

  "spaceAfterPropertyColon": {
    "enabled": true,
    "severity": "error",
    "style": "one_space"
  },

  "spaceAfterPropertyName": {
    "enabled": true,
    "severity": "error",
    "style": "no_space"
  },

  "spaceAfterPropertyValue": {
    "enabled": true,
    "severity": "error",
    "style": "no_space"
  },

  "spaceAroundComma": {
    "enabled": true,
    "severity": "error",
    "allowNewline": true,
    "style": "after"
  },

  "spaceAroundOperator": {
    "enabled": true,
    "severity": "error",
    "style": "both"
  },

  "spaceBeforeBrace": {
    "enabled": true,
    "severity": "error",
    "style": "one_space"
  },

  "spaceBetweenParens": {
    "enabled": true,
    "severity": "error",
    "style": "no_space"
  },

  "stringQuotes": {
    "enabled": true,
    "severity": "error",
    "style": "single"
  },

  "trailingSemicolon": {
    "enabled": true,
    "severity": "error"
  },

  "trailingWhitespace": {
    "enabled": true,
    "severity": "warning"
  },

  "urlFormat": {
    "enabled": true,
    "severity": "error",
    "style": "relative"
  },

  "urlQuotes": {
    "enabled": true,
    "severity": "error"
  },

  "zeroUnit": {
    "enabled": true,
    "severity": "error",
    "style": "no_unit",
    "exclude": []
  }
}