13b610be03
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Implement three missing JS operators that together unblock 57 Test262 full-suite tests (pass rate 42% → 44%): - delete: reference-aware unary operator that removes object properties, with special handling for member/computed/identifier expressions - void: unary operator that evaluates operand and returns undefined - in: binary operator that checks property existence via prototype chain, gated by allow_in flag to disambiguate from for-in loops The allow_in mechanism (with_no_in helper) prevents the parser from consuming `in` as a binary operator inside for-loop initializers, which would break for-in/for-of parsing. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
10 lines
56 B
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10 lines
56 B
Plaintext
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