Capybara: evaluate_script might freeze your browser

Unpoly: Loading large libraries on-demand

When your JavaScript bundle is so massive that you cannot load it all up front, I would recommend to load large libraries from the compilers that need it.

Compilers are also a good place to track whether the library has been loaded before. Note t...

Your browser might silently change setTimeout(f, 0) to setTimeout(f, 5)

Capybara: Preventing headless Chrome from freezing your test suite

You should probably load your JavaScript with <script defer>

It is generally discouraged to load your JavaScript by a <script src> tag in the <head>:

<head>
  <script src="app.js"></script>
</head>

The reason is that a <script src> tag will pause the DOM parser until the script has l...

Cucumber step to set cookies in your Capybara session

To set a cookie in your test browser for cucumber tests, you can use this step:

Given /^I have a "([^\"]+)" cookie set to "([^\"]+)"$/ do |key, value|
  headers = {}
  Rack::Utils.set_cookie_header!(headers, key, value)
  cookie_string = h...

Capybara: evaluate_script might freeze your browser

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