giles 2278443182 Hyperscript conformance: 222 test fixtures from _hyperscript 0.9.14 ...

Extract pure expression tests from the official _hyperscript test suite
and implement parser/compiler/runtime extensions to pass them.

Test infrastructure:
- 222 fixtures extracted from evalHyperScript calls (no DOM dependency)
- SX data format with eval-hs bridge and run-hs-fixture runner
- 24 suites covering expressions, comparisons, coercion, logic, etc.

Parser extensions (parser.sx):
- mod as infix arithmetic operator
- English comparison phrases (is less than, is greater than or equal to)
- is a/an Type typecheck syntax
- === / !== strict equality operators
- I as me synonym, am as is for comparisons
- does not exist/match/contain postfix
- some/every ... with quantifier expressions
- undefined keyword → nil

Compiler updates (compiler.sx):
- + emits hs-add (type-dispatching: string concat or numeric add)
- no emits hs-falsy? (HS truthiness: empty string is falsy)
- matches? emits hs-matches? (string regex in non-DOM context)
- New cases: not-in?, in?, type-check, strict-eq, some, every

Runtime additions (runtime.sx):
- hs-coerce: Int/Integer truncation via floor
- hs-add: string concat when either operand is string
- hs-falsy?: HS-compatible truthiness (nil, false, "" are falsy)
- hs-matches?: string pattern matching
- hs-type-check/hs-type-check!: lenient/strict type checking
- hs-strict-eq: type + value equality

Tokenizer (tokenizer.sx):
- Added keywords: I, am, does, some, mod, equal, equals, really,
  include, includes, contain, undefined, exist

Scorecard: 47/112 test groups passing. 0 non-HS regressions.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

2026-04-08 18:53:50 +00:00

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