Kida 0.2.1

Released: February 14, 2026

Compiler improvements: dead code elimination for provably constant branches, and filter/pipeline partial evaluation whenstatic_contextis provided.

Highlights

• Dead code elimination — Const-only pass removes branches whose conditions are provably constant
• Filter partial evaluation — Pure filters evaluated at compile time whenstatic_contextis available
• Scoping preserved — Skips inlining when block-scoped nodes (Set, Let, Capture, Export) are present

Added

Dead Code Elimination

A const-only pass removes branches whose conditions are provably constant at compile time:

{% if false %}
  This block is never emitted
{% end %}

{% if 1+1==2 %}
  This block is always emitted (condition folded away)
{% end %}

• Runs withoutstatic_context— no runtime data needed
• Skips inlining when the body contains block-scoped nodes (Set, Let, Capture, Export) to preserve scoping semantics
• Reduces bytecode size and eliminates unreachable branches

Filter/Pipeline Partial Evaluation

Whenstatic_contextis provided, the partial evaluator now evaluates Filter and Pipeline nodes for pure filters:

{{ site.title | default("Home") }}
{{ site.title | upper }}

• Uses built-in pure filters plusEnvironment.pure_filters
• Static expressions become literal strings in bytecode
• Eliminates per-render dictionary lookups for site-wide constants

Upgrade Guide

1. No breaking changes — All existing templates continue to work unchanged
2. Optional optimization — Providestatic_contextwhen compiling to enable filter partial evaluation
3. Dead code removal — Templates with{% if false %}or similar will have those branches stripped automatically

Links

• PyPI
• GitHub
• Full Changelog