require 'pronto' require 'shellwords' module Pronto class ESLintNpm < Runner CONFIG_FILE = '.pronto_eslint_npm.yml'.freeze CONFIG_KEYS = %w(eslint_executable files_to_lint).freeze attr_writer :eslint_executable def eslint_executable @eslint_executable || 'eslint'.freeze end def files_to_lint @files_to_lint || /(\.js|\.es6)$/ end def files_to_lint=(regexp) @files_to_lint = regexp.is_a?(Regexp) && regexp || Regexp.new(regexp) end def read_config config_file = File.join(repo_path, CONFIG_FILE) return unless File.exist?(config_file) config = YAML.load_file(config_file) CONFIG_KEYS.each do |config_key| next unless config[config_key] send("#{config_key}=", config[config_key]) end end def run return [] if !@patches || @patches.count.zero? read_config @patches .select { |patch| patch.additions > 0 } .select { |patch| js_file?(patch.new_file_full_path) } .map { |patch| inspect(patch) } .flatten.compact end private def repo_path @_repo_path ||= @patches.first.repo.path end def inspect(patch) offences = run_eslint(patch) clean_up_eslint_output(offences) .map do |offence| patch .added_lines .select { |line| line.new_lineno == offence['line'] } .map { |line| new_message(offence, line) } end end def new_message(offence, line) path = line.patch.delta.new_file[:path] level = :warning Message.new(path, line, level, offence['message'], nil, self.class) end def js_file?(path) files_to_lint =~ path.to_s end def run_eslint(patch) Dir.chdir(repo_path) do escaped_file_path = Shellwords.escape(patch.new_file_full_path.to_s) JSON.parse( `#{eslint_executable} #{escaped_file_path} -f json` ) end end def clean_up_eslint_output(output) # 1. Filter out offences without a warning or error # 2. Get the messages for that file # 3. Ignore errors without a line number for now output .select { |offence| offence['errorCount'] + offence['warningCount'] > 0 } .map { |offence| offence['messages'] } .flatten.select { |offence| offence['line'] } end end end