I sometimes had the issue that I received an error when starting an existing vagrant box with vagrant up:
Similar to the Webpack Bundle Analyzer, Chrome's new Lighthouse feature … … shows a visualisation of your JavaScript bundles. It's...
From Exploring ES6: Module imports are hoisted (internally moved to the beginning of the current scope). Therefore, it doesn’t...
Modern versions of Capybara include a finder method #ancestor which allows you to find a parental element using CSS or...
Since GitLab 10.3. you can use Mermaid in GitLab comments: Gitlab Doc. With Mermaid you can create diagrams based on...
Jasmine is a great way to unit test your JavaScript components without writing an expensive end-to-end test for...
Rails 6.1 has a "strict loading" mode that forces the developer to preload any association they plan to use. Associations...
Within development and test environments, Rails is usually configured to show a detailed debug page instead of 404s. However, there...
This RailsCast demonstrated a very convenient method to activate VCR for a spec by simply tagging it with :vcr.
Debugging in CSS means figuring out what might be the problem when you have unexpected layout results. We’ll look...
The gem better_errors offers a detailed error page with an interactive REPL for better debugging. I had the issue...
Event delegation is a pattern where a container element has a single event listener that handles events for all descendants...
Sometimes a link or input field has no visible label. E.g. a text field with a magnifying glass icon 🔎 and...
Besides their default styling properties, HTML elements have a semantic meaning. For example, an h1 tag is usually styled with...
Most browsers have built-in drag and drop support for different page elements like text and images. While this may...
Ruby lets you re-use existing RegExp objects by interpolating it into new patterns: locales_pattern = /de|en|fr|es/i...
The RSpec matcher tests if two HTML fragments are equivalent. Equivalency means: Whitespace is ignored Types of attribute quotes are...
If you have fzf installed, you may add an alias such as this to your ~/.bashrc: alias recent-branch="git...
We are using Spring in our tests for sequential test execution but not for parallel test execution. And Rails requires...
With cd .. you can navigate one directory up from the one you are at now. If you use that a...
The tree command will show you the contents of a directory and all its sub directories as a tree:
There is an option you can set so that when using the cd command, small typos are automatically corrected. Add...
age is a simple, modern and secure file encryption tool, format, and Go library. It features small explicit keys, no...
Rails has the handy controller method send_file which lets us download files easily. We can decide whether the file...