require "better_errors" if ENV["RACK_ENV"] == "development" use BetterErrors::Middleware end

Add the following to the top of your Sinatra application:

require "better_errors" configure :development do use BetterErrors::Middleware BetterErrors.application_root = __dir__ end

A demonstration of how to use Better Errors with Hanami is in phoffer/hanami-better_errors. However, it demonstrates two bugs that keep Better Errors from working.

(One of those issues is with Shotgun, a fix for which is described below.

Add the following to config.rb:

require "better_errors" require "binding_of_caller" set :show_exceptions, false configure :development do use BetterErrors::Middleware BetterErrors.application_root = __dir__ end

There is currently a bug that keeps context information from loading using Middleman.

Shotgun causes every request to load all dependencies, including Better Errors. Better Errors relies on storing the most recent exception in memory, and Shotgun makes this impossible.

The solution is to remove shotgun from your project. One alternative is rerun, which instead restarts the application only when files within the application change.