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[TS] Support new field declaration for instances #288

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Description

@CaelmBleidd

Resolution (2026-10-14)

Audited against usvm main at 19866c959d.

Undeclared and literal-key object properties are tracked, reconstructed, and preserved through writes, deletion and aliases. Implementation: usvm #458, usvm #474.

Validation: All 16 SymbolicPropertiesTest regressions passed, including bracket literals, new payloads, aliases and input reconstruction/Node replay.

Original report and acceptance context, retained for traceability

There should be an option to add fields x["newField"] = 15. Right now, reading of such field returns a fake object, but it isn't registered anywhere. Therefore, we won't restore it during input values resolution

Activity

  1. changed the title [-]Support new field declaration for instances[/-] [+][TS] Support new field declaration for instances[/+] on Jul 3, 2025
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