0.9.0 RELEASE NOTES

Fizlet 0.9.0

By Chris Cooley ↗ · 29 October 2026 · CHANGELOG.md ↗

fizlet/camera (new, 1,330 B gzip, budget 1,536): the page is the camera. camera(engine, el) pans and zooms a DOM stage with one transform written through the ledger (Recall exact, even mid-move). zoomAt, flyTo, fit, pan, home, snap, toWorld / toScreen (into a caller's array). Moves ease (ease, per second) and land exactly on the target, then the engine settles; with reduced motion every move jumps. contain (default on) keeps the stage over its own box and clips its parent while moved, so the page never scrolls sideways. Zoom limits min / max. No allocation per step (tests/camera.test.mjs); Chromium: tests/camera.mjs (in test:browser).
fx: gravity and named particle kinds as data. effects({ gravity }) (px/s², settable), and each kind takes its own share (the blast's debris falls; its other parts don't). emitter(fx, KINDS) registers kinds (shape, drag, gravity, angle, spread, speed, size, life) and emit(id, x, y, n, c, cn, scale) sprays them: built-in bubble, spark, drip, debris, or your own (up to 26 per pool). Capacity-bounded (a full pool counts the rest in dropped without looping) and zero allocation (tests/bricks.test.mjs). New shape streak. emitter and KINDS tree-shake away when unused: effects() alone is 2,1xx B in the page build (7,029 / 7,168 B; was 6,859). The whole module is 2,758 B (budget raised 2,048 → 3,072 for emitter).
Fizz demo on camera + fx kinds: the hand-rolled zoom (origin, ease curve, ledger writes) is now fizlet/camera; the spray, bubble and splash loops are three emit() calls on kinds as data; drips fall under the pool's gravity. Scene source 8,422 → 8,220 B (180 → 175 lines). Live chunk 8,400 → 10,100 B gzip (+camera; still ≤ 10 KB). Measured (Chromium 153, 4× CPU throttle): script per frame 1.2 → 1.1 ms avg, p95 4.0 → 4.1 ms, max 25.3 → 22.4 ms; 0 frames settled, offscreen and with reduced motion; CLS from the slot 0. The layers story's live chunk is 10,230 B (≤ 10,240).

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