Use PHP CodeSniffer for static analysis of JavaScript

js_code_sniffs.md

JavaScript code sniffs available as of PHPCS v1.3.6

Use the js_sniffs.xml ruleset to run all these sniffs, eg phpcs -v --standard=js_sniffs.xml

0. comparison operator usage
1. control signature
2. control structure spacing
3. disallow inline if
4. disallow size functions in loops
5. disallow tab indent
6. file comment
7. for loop declaration
8. function closing brace space
9. function opening brace space
10. inline comment
11. inline control structure
12. line endings
13. logical operator spacing
14. long condition closing comment
15. lower case constant
16. multiple statement alignment
17. operator bracket
18. operator spacing
19. post statement comment
20. semicolon spacing
21. superfluous whitespace
22. switch declaration
23. unnecessary string concat

js_sniffs.xml

<?xml version="1.0"?>
<ruleset name="JavaScript">
  <description>Run all the sniffs that are applicable to JavaScript files. See https://gist.github.com/3375708</description>

  <rule ref="Squiz.Operators.ComparisonOperatorUsage"/>
  <rule ref="Squiz.ControlStructures.ControlSignature"/>
  <rule ref="Squiz.WhiteSpace.ControlStructureSpacing"/>
  <rule ref="Squiz.PHP.DisallowInlineIf"/>
  <rule ref="Squiz.PHP.DisallowSizeFunctionsInLoops"/>
  <rule ref="Generic.WhiteSpace.DisallowTabIndent"/>
  <!-- <rule ref="Squiz.Commenting.FileComment"/> -->
  <rule ref="Squiz.ControlStructures.ForLoopDeclaration"/>
  <!-- <rule ref="Squiz.WhiteSpace.FunctionClosingBraceSpace"/> -->
  <!-- <rule ref="Squiz.WhiteSpace.FunctionOpeningBraceSpace"/> -->
  <rule ref="Squiz.Commenting.InlineComment"/>
  <rule ref="Generic.ControlStructures.InlineControlStructure"/>
  <rule ref="Generic.Files.LineEndings"/>
  <rule ref="Squiz.WhiteSpace.LogicalOperatorSpacing"/>
  <rule ref="Squiz.Commenting.LongConditionClosingComment"/>
  <rule ref="Generic.PHP.LowerCaseConstant"/>
  <!-- <rule ref="Generic.Formatting.MultipleStatementAlignment"/> -->
  <!-- <rule ref="Squiz.Formatting.OperatorBracket"/> -->
  <rule ref="Squiz.WhiteSpace.OperatorSpacing"/>
  <rule ref="Squiz.Commenting.PostStatementComment"/>
  <rule ref="Squiz.WhiteSpace.SemicolonSpacing"/>
  <rule ref="Squiz.WhiteSpace.SuperfluousWhitespace"/>
  <rule ref="Squiz.ControlStructures.SwitchDeclaration"/>
  <rule ref="Generic.Strings.UnnecessaryStringConcat"/>

</ruleset>