class Overcommit::Hook::PreCommit::YarnCheck
Check if local yarn.lock matches package.json when either changes, unless yarn.lock is ignored by git.
Constants
- ACTIONABLE_ERRORS
A lot of the errors returned by ‘yarn check` are outside the developer’s control (are caused by bad package specification, in the hands of the upstream maintainer) So limit reporting to errors the developer can do something about
- LOCK_FILE
Public Instance Methods
run()
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# File lib/overcommit/hook/pre_commit/yarn_check.rb, line 18 def run # Ignore if yarn.lock is not tracked by git ignored_files = execute(%w[git ls-files -o -i --exclude-standard]).stdout.split("\n") return :pass if ignored_files.include?(LOCK_FILE) previous_lockfile = File.exist?(LOCK_FILE) ? File.read(LOCK_FILE) : nil result = execute(command) new_lockfile = File.exist?(LOCK_FILE) ? File.read(LOCK_FILE) : nil # `yarn check` also throws many warnings, which should be ignored here errors_regex = Regexp.new("^error (.*)(#{ACTIONABLE_ERRORS.join('|')})(.*)$") errors = errors_regex.match(result.stderr) unless errors.nil? && previous_lockfile == new_lockfile return :fail, "#{LOCK_FILE} is not up-to-date -- run `yarn install`" end :pass end