[borkdude]

Fixes #48.

h/expr now compiles against squint core, which hyper serves as the hyper_sc global at /hyper/squint-core.js.

User-visible changes:

• Truthiness follows Clojure: 0 and "" are truthy in and, or, if, when and the *-let forms.
• = compares by value (hyper_sc._EQ_), with a plain === against literals.
• str renders nil as "".
• && and || compile to the JS operators.
• println is squint's. Use js/console.log for raw console output.

Datastar puts its return after the last ; in a value attribute, even one inside a nested function (starfederation/datastar#1215). Squint emits such functions for let in expression position. When compiled output contains a ;, h/expr now returns the last form through a variable: var __hyper_r = (...); return __hyper_r;. A division followed by a / in a later string or regex still breaks in Datastar and is tracked in the same issue.

Also:

• Bumps squint to 0.14.209, which wraps set! in parentheses in expressions.
• Removes the =, str and println rewrites and the compiler macros that were never reached.

Tests: unit and e2e pass. expr-nested-test runs a nested when-let over or and a re-find of #"a;b" in the browser.

Follow-up: borkdude/hyper@squint...expr-bundle serves only the squint core functions that h/expr output uses, built with esbuild on request (208 bytes gzipped instead of 33 KB for the e2e suite).

[rschmukler]

Looks great!

A few small asks:

1. Could you rename :tree-shake to :tree-shake? - other boolean options are ? suffixed so I want to keep it consistent.
2. Could you add a blurb to the readme re. the tree shaking? Probably a note in The Squint Dialect Section or nearby.

[borkdude]

Done

[rschmukler]

Thanks!