Attempting to change webpack-dev-server host

Question

When trying to change the host in webpack-dev-server from 0.0.0.0 to localhost.

I looked in the code (bin/web-pack-dev-server generated for Rails 5.1.3), tried to understand it, and noticed what I thought was a --host parameter

PORT=8080 bin/webpack-dev-server --host=localhost

the --host=localhost flag won't work.

From bin/web-pack-dev-server:

begin
  dev_server = YAML.load_file(CONFIG_FILE)["development"]["dev_server"]

  DEV_SERVER_HOST = "http#{"s" if args('--https') ||     dev_server["https"]}://#{args('--host') || dev_server["host"]}:#{args('--port')     || dev_server["port"]}"
  puts DEV_SERVER_HOST
rescue Errno::ENOENT, NoMethodError
  puts "Webpack dev_server configuration not found in #{CONFIG_FILE}."
  puts "Please run bundle exec rails webpacker:install to install webpacker"
  exit!
end

Answer 1

Changed PORT=8080 bin/webpack-dev-server --host=localhost to PORT=8080 bin/webpack-dev-server --host localhost

Simply removing the = fixed it.