Packages

I build a few open-source packages that you might find helpful. You can also follow me on GitHub.

Go

• hangar: helper to build Fly.io services

  Provides tools to help build distributed services on Fly.io, such as managing various local copies of a daemon that run in different 'locations'.

• https-forward: (install via Snap): simple reverse proxy for local services

  Want to serve random http services on the real internet with automatic certificate generation?—i.e., you have local dev servers on localhost:3000 and so on. This is a simple Go-based https:// server that'll reverse proxy to http-only services with a number of configuration options (but is not a general-purpose web server).

NPM

• kuto: faster updates for big JS projects

  Kuto takes a novel approach to splitting code, one which re-uses existing code a client already has when serving updates. It's good for big bundle sizes (>1mb).

• esm-resolve: a permissive ESM resolver in pure JS for Node

  Resolves import strings, which may be useful for a bundler or other tool, without using Node internals. Supports subpath exports, conditions, all that tricky stuff, and is a bit more permissive than Node itself.

• parq: a Parquet reader in JavaScript

  Does what it says on the tin and processes Parquet, a common data science format. Has a live demo.

• typed-event-types: allows you to set the type of Event

  Now that we can subclass EventTarget, it's useful to be able to say that event "foo" generates a certain subclass of Event. This simple package just provides TS types to help with that.

• dhost: simple webserver that never caches anything

  Sick of dev web servers where you aren't sure that you're getting the latest version of something? This will always serve the latest version of a file, and is fast to boot.

• thorish: a dumping ground for libraries.

  I've attempted to consolidate the libraries that I use for a lot of my projects. This basically consists of helpers to do with Map/Set, as well as lots of things to do with async iterators and Promise. You can add this to your devDependencies and then compile in the things you use, since it's tree-shakable and has no side-effects.

• but-csv: a 479 byte CSV parser and builder.

  This was built in reaction to how complex even "light-weight" CSV libraries are: they do too much (including streaming), but if you just want to bring everything into memory and get some data out quickly, this is for you.

• but-unzip: a <1k byte unzip library.

  Work with zip files in your browser or Node. This is miniscule in Node, and small in the browser (~1k) for 90% of users. For the last 10%, you can dynamically include a ~20kb deflate helper.

• sents and sents-cli: a small filesystem watcher for build scripts

  There's obviously tools like Chokidar which are the standard, but they have lots of dependencies and often include native code, the bane of every Node developer's existence. These two libraries do all of what those do, and deal with platform differences, all in JS.

• viz-observer: notifies you when an element changes on your page

  This is a library which provides something not built-in to the DOM: watches an element move or resize on your page, or basically change dimensions in any way. You have ResizeObserver, but there's no MoveObserver—this provides a kind of union of that. It's really useful for say, showing a tooltip attached to another element, where you don't share the DOM tree.

• fast-text-encoding: a polyfill for TextEncoder and TextDecoder

  You probably don't need this, browsers and Node have moved on. But it's heavily depended on.

• undoer: allows you to arbirtrarily handle real browser undo/redo events

  This is a useful library but is mostly a showcase of this blog post.