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JASON

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library 0.1.3 ·javascript
verified Jun 4, 2026

JASON is a JSON-like serializer/parser that extends JSON to support objects with methods, cyclic references, Dates, RegExps, Booleans, undefined, and array holes. Current stable version 0.1.3. It uses eval() internally, making it unsafe for untrusted input. Unlike JSON, it preserves object types and allows serialization of complex JavaScript structures, but should only be used in trusted environments. No updates since 2010.

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