OptionaldebugNot supported — true throws LegacyUnsupportedError at runtime.
OptionalenableOptionalexcludeExclude unknown properties from the JSON output (default: false —
unknown properties are included, as bpg). The parser's warning text
references the new API's inverse flag (includeUnknownProperties).
OptionalprettifyOptionalstringifyOptionaltextbitmark v3 only — true throws LegacyUnsupportedError at runtime.
Options for JSON generation