Civilint is a thin wrapper which calls jshint and PHP_CodeSniffer (with the coder ruleset).
Code-style tests ensure a consistent layout across all of the codebase, and they also identify some unsafe or confusing coding patterns. While working on a patch, you should run civilint to determine if the pending changes comply with style guides.
Note that civilint may be invoked a few different ways:
civilint # (no arguments) – Check style of any uncommitted changes. civilint some/file.php # Check style of a specific file (or list of files). git diff --name-only HEAD~1 | civilint - # Check your last commit git diff --name-only master | civilint - # Check for changes in your branch (compared to master)