TypeScript
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TypeScript is a newer addition to my repertoire compared to JavaScript, but from mediocre experience a much needed step to improving development targeting web platforms with its static type checking, which is much appreciated compared to the so-called ‘duck typing’ of its JavaScript counterpart.
Featured in my portfolio is Con2, where both the front- and backend has been written in TypeScript. Another is ts-nano, which was an attempt at a text editor targeting the web comparable to Ace, although only intended for explicitly set highlights and nowhere near the same level of e.g. syntax highlighting.