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require "shellwords"
require "socket"
require "webpacker/configuration"
require "webpacker/dev_server"
require "webpacker/runner"
module Webpacker
class DevServerRunner < Webpacker::Runner
def run
load_config
detect_port!
execute_cmd
end
private
def load_config
app_root = Pathname.new(@app_path)
@config = Configuration.new(
root_path: app_root,
config_path: app_root.join("config/webpacker.yml"),
env: ENV["RAILS_ENV"]
)
dev_server = DevServer.new(@config)
@hostname = dev_server.host
@port = dev_server.port
@pretty = dev_server.pretty?
rescue Errno::ENOENT, NoMethodError
$stdout.puts "webpack dev_server configuration not found in #{@config.config_path}[#{ENV["RAILS_ENV"]}]."
$stdout.puts "Please run bundle exec rails webpacker:install to install Webpacker"
exit!
end
def detect_port!
server = TCPServer.new(@hostname, @port)
server.close
rescue Errno::EADDRINUSE
$stdout.puts "Another program is running on port #{@port}. Set a new port in #{@config.config_path} for dev_server"
exit!
end
def execute_cmd
env = Webpacker::Compiler.env
env["WEBPACKER_CONFIG"] = @webpacker_config
cmd = if node_modules_bin_exist?
["#{@node_modules_bin_path}/webpack-dev-server"]
else
["yarnpkg", "webpack-dev-server"]
end
if @argv.include?("--debug-webpacker")
cmd = [ "node", "--inspect-brk"] + cmd
end
cmd += ["--config", @webpack_config]
cmd += ["--progress", "--color"] if @pretty
Dir.chdir(@app_path) do
Kernel.exec env, *cmd
end
end
def node_modules_bin_exist?
File.exist?("#{@node_modules_bin_path}/webpack-dev-server")
end
end
end
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