.lesshintrc

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

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

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

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

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

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

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

  "idSelector": {
    "enabled": true,
    "severity": "error"
  },
  
  "importantRule": false, // To disable a rule completely, set it to false

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

  "maxCharPerLine": {
    "limit": 100,
    "severity": "error"
  },

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

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

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

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

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

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

  "spaceAfterPropertyValue": {
    "style": "no_space",
    "severity": "error"
  },
  
  "spaceAroundComma": {
    "style": "after",
    "severity": "error"
  },

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

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

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

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

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

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

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

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