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v6/val #7: numeric-looking enum members type-mismatch their own defaults; ban them

Status: Open.

#759 In StoneCypher/jssm;

· StoneCypher opened on Jun 14, 2026

v6/val #6: validate_val_value silently no-ops on an unknown type kind

Status: Open.

#758 In StoneCypher/jssm;

· StoneCypher opened on Jun 14, 2026

v6/val #4: val/prop name collision not rejected (megaspec §5)

Status: Open.

#757 In StoneCypher/jssm;

· StoneCypher opened on Jun 14, 2026

v6/val #3+#5: columnar val storage + undo-log journal (decision-log §27); replace Map, journal logs by slot

Status: Open.

#756 In StoneCypher/jssm;

· StoneCypher opened on Jun 14, 2026

v6/val #2: non-null-by-default hole — unsupplied non-nullable val reads as undefined; T?/default null unimplemented

Status: Open.

#755 In StoneCypher/jssm;

· StoneCypher opened on Jun 14, 2026

v6/val #1: restrict bareword Atom to identifier-like; require quoting for symbol-bearing names

Status: Open.

#754 In StoneCypher/jssm;

· StoneCypher opened on Jun 14, 2026

Inline circular_buffer_js + reduce-to-639-1 and break both deps → zero runtime dependencies

enhancement

Status: Open.

#743 In StoneCypher/jssm;

· StoneCypher opened on Jun 12, 2026

perf(machine): constructor cleanups — seen_edges duplicates _edge_map; complete.includes() per new state

Status: Open.

#720 In StoneCypher/jssm;

· StoneCypher opened on Jun 12, 2026

perf(transition): gate auto_set_state_timeout / clear_state_timeout for machines with no 'after' config

Status: Open.

#719 In StoneCypher/jssm;

· StoneCypher opened on Jun 12, 2026

perf(hooks): identity fast-path in _update_hook_fields for shared outcomes (4.9% of hooked transition)

Status: Open.

#718 In StoneCypher/jssm;

· StoneCypher opened on Jun 12, 2026

perf(parser): investigate peg$parseSubexp — largest single parser frame at 8.2% post-batch

Status: Open.

#717 In StoneCypher/jssm;

· StoneCypher opened on Jun 12, 2026

perf(parser): first-char gate for ArrowDecoration probes — four failed rule calls per side per undecorated edge

Status: Open.

#716 In StoneCypher/jssm;

· StoneCypher opened on Jun 12, 2026