Wired Elements: UI Elements with a Hand-Drawn Look— Possibly useful for wireframes and mockups, or wherever you want a less formal look. Implemented as Web Components and cover things like checkboxes, cards, input fields, radio buttons, etc. GitHub repo.
Preet Shihn
JavaScript Algorithms and Data Structures— A wide variety of algorithms (e.g. permutations, Levenshtein distance, binary search) and data structures (e.g. linked lists, trees, stacks) implemented in JavaScript with explanations and links to further reading.
Oleksii Trekhleb
Codacy Helps You Improve Your JavaScript Code— An automated code review tool that allows developers to improve code quality. We check your code against the most popular JS static analysis tools, with specific plugins for Vue, Angular and React. Sign up for free and improve your coding.
Parcel: How Simple Is It, Really?— The conclusion is ‘very’ and if you haven’t played with this ‘zero config’ bundler yet, this is as simple an intro as you’ll get.