In this post I'll give updates about open source I worked on during March and April 2024.

To see previous OSS updates, go here.

Sponsors

I'd like to thank all the sponsors and contributors that make this work possible. Without you, the below projects would not be as mature or wouldn't exist or be maintained at all.

Current top tier sponsors:

• Clojurists Together
• Roam Research
• Nextjournal
• Nubank

Open the details section for more info about sponsoring.

Updates

Here are updates about the projects/libraries I've worked on last month.

• squint: CLJS syntax to JS compiler

  • #509: Optimization: use arrow fn for implicit IIFE when possible
  • Optimization: emit const in let expressions, which esbuild optimizes better
  • Don't wrap arrow function in parens, see this issue
  • Fix #499: add support for emitting arrow functions with ^:=> metadata
  • Fix #505: Support :rename in :require
  • Fix #490: render css maps in html mode
  • Fix #502: allow method names in defclass to override squint built-ins
  • Fix #496: don't wrap strings in another set of quotes
  • Fix rendering of attribute expressions in HTML (should be wrapped in quotes)
  • Compile destructured function args to JS destructuring when annotated with ^:js. This benefits working with vitest and playwright.
  • #481: BREAKING, squint no longer automatically copies all non-compiled files to the :output-dir. This behavior is now explicit with :copy-resources, see docs.
  • Add new #html reader for producing HTML literals using hiccup. See docs and playground example.
  • #483: Fix operator precedence problem

• neil: A CLI to add common aliases and features to deps.edn-based projects.
  Released version 0.3.65 with the following changes:

  • #209: add newlines between dependencies
  • #185: throw on non-existing library
  • Bump babashka.cli
  • Fetch latest stable slipset/deps-deploy, instead of hard-coding (@vedang)
  • Several emacs package improvements (@agzam)

• clj-kondo: static analyzer and linter for Clojure code that sparks joy.
  Released 2024.03.13

  • Fix memory usage regression introduced in 2024.03.05
  • #2299: Add documentation for :java-static-field-call.
  • #1732: new linter: :shadowed-fn-param which warns on using the same parameter name twice, as in (fn [x x])
  • #2276: New Clojure 1.12 array notation (String*) may occur outside of metadata
  • #2278: bigint in CLJS is a known symbol in extend-type
  • #2288: fix static method analysis and suppressing :java-static-field-call locally
  • #2293: fix false positive static field call for (Thread/interrupted)
  • #2296: publish multi-arch Docker images (including linux aarch64)
  • #2295: lint case test symbols in list
    Unreleased changed:
  • #1035: Support SARIF output with --config {:output {:format :sarif}}
  • #2309: report unused for expression
  • #2135: fix regression with unused JavaScript namespace
  • #2302: New linter: :equals-expected-position to enforce expected value to be in first (or last) position. See docs
  • #2304: Report unused value in defn body

• CLI: Turn Clojure functions into CLIs!
  Released version 0.8.58-59

  • Fix #96: prevent false defaults from being removed/ignored
  • Fix #91: keyword options and hyphen options should not mix
  • Fix #89: long option never represents alias

• rewrite-edn: Utility lib on top of rewrite-clj with common operations to update EDN while preserving whitespace and comments
  Released 0.4.8 with the following update:

  • Add newline after adding new element to top level map with assoc-in

• nbb: Scripting in Clojure on Node.js using SCI

  • nbb bundle JS output will ignore nbb.edn
  • #351: Update bun docs/example.
  • Add cljs.core/exists?

• clojure-mode: Clojure/Script mode for CodeMirror 6.

  • Fix #49: bug with hitting backspace after line comment Test it in the squint playground.

• instaparse-bb: Use instaparse from babashka

  • Serialize regexes in parse results

• scittle: Execute Clojure(Script) directly from browser script tags via SCI
  Released v0.6.17

  • #77: make dependency on browser (js/document) optional so scittle can run in webworkers, Node.js, etc.
  • #69: executing script tag with src + whitespace doesn't work
  • #72: add clojure 1.11 functions like update-vals
  • #75: Support reader conditionals in source code

• cherry: Experimental ClojureScript to ES6 module compiler

  • #127: fix duplicate cherry-cljs property in package.json which caused issues with some bundlers
  • Bump squint common compiler code

• clerk

  • #646 Fix parsing + location issue which fixes compatibility with honey.sql

• http-client: babashka's http-client
  Released 0.4.17-19

  • #55: allow :body be java.net.http.HttpRequest$BodyPublisher
  • Support a Clojure function as :client option, mostly useful for testing
  • #49: add ::oauth-token interceptor
  • #52: document :throw option

• bbin: Install any Babashka script or project with one command
  These fixes have been made by @rads:

  • Fix #62: bbin ls is unnecessarily slow
  • Fix #72: bbin install [LOCAL-FILE] should not be restricted to files with the .clj extension

• SCI: Configurable Clojure/Script interpreter suitable for scripting and Clojure DSLs

  • Fix #626: add cljs.core/exists?
  • Fix #919: :js-libs + refer + rename clashes with core var
  • Fix #906: merge-opts loses :features or previous context

• deps.clj: A faithful port of the clojure CLI bash script to Clojure

  • Fix Windows issue related to relative paths (which took me all day, argh!)

• fs - File system utility library for Clojure

  • #122: fs/copy-tree: fix copying read-only directories with children (@sohalt)
  • #127: Inconsistent documentation for the :posix-file-permissions options (@teodorlu)

• babashka: native, fast starting Clojure interpreter for scripting.

  • Fix #1679: bump timbre and fix wrapping timbre/log!
  • Add java.util.concurrent.CountDownLatch
  • Add java.lang.ThreadLocal
  • Bump versions of included libraries

Other projects

These are (some of the) other projects I'm involved with but little to no activity happened in the past month.