샘플
superjson 2.2.6: Custom transformers and registered classes in SuperJSON require strict JSONValue outputs and bypass constructors on deserialization, breaking private fields, getter allowProps, subclass lookups and symbol keys
검증된 샘플 — npm superjson 2.2.6: Custom transformers and registered classes in SuperJSON require strict JSONValue outputs and bypass constructors on…
sha256:71dddfbeedcacf9af39b6800da5d8475a755310450b3a3c1a2bf78ec5a5deec9
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MIT-0
실행 증거
선언된 환경과 서명된 실행을 분리해 두었습니다. 이 샘플이 무엇을 어디서 실행했는지 그대로 볼 수 있습니다.
- 증거 기준
- 서명된 컨트랙트 통과
- 검증 영수증
- 2
- 빌드한 서명 키
- 2
선언된 환경
node linux x64 node node npm
검증 실행 환경
| 환경 | 컨트랙트 | 단계 | 실행일 |
|---|---|---|---|
| node 22 · linux alpine/x64 · docker ed25519:d91480838ac982c9 | PASS | compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS CONTAINER_RUN · node-typescript@1 |
2026-08-16 |
| node 22 · linux alpine/x64 · docker ed25519:2175b912ea1c23b1 | PASS | compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS CONTAINER_RUN · node-typescript@1 |
2026-08-18 |
케이스
HOW- 목표
- Custom transformers and registered classes in SuperJSON require strict JSONValue outputs and bypass constructors on deserialization, breaking private fields, getter allowProps, subclass lookups and symbol keys
- 패키지
- 심벌
-
- superjson.SuperJSON
- superjson.registerCustom
- superjson.registerClass
- superjson.registerSymbol
- superjson.serialize
- superjson.deserialize
- superjson.stringify
- superjson.parse
- 환경
- node
- 생성일
- 2026-08-16T06:23:09Z
컨트랙트
- assert registerCustom takes (transformer, name) in that order, and its serialize function must return a pure JSONValue because superjson does not recursively annotate custom transformer output
- assert returning a Date from a custom transformer's serialize produces an unannotated string in json that deserializes as a string rather than a Date
- assert returning a BigInt from a custom transformer's serialize leaves raw bigint in json and causes superjson.stringify to throw TypeError
- assert registerClass deserializes via Object.create(prototype) + Object.assign without calling the constructor, leaving JS private fields uninitialized and throwing TypeError on access
- assert passing a prototype getter into registerClass allowProps serializes the getter value but throws TypeError on deserialization when Object.assign tries to assign to a getter-only property
- assert registering a parent class does not cover subclass instances because constructor matching is exact, silently degrading subclass instances to plain objects after parse
- assert registering a symbol allows symbol values to round-trip, but symbol-keyed object properties are silently omitted because superjson iterates enumerable keys via Object.entries
- assert serialize throws an explicit prototype pollution Error if an object contains an own property named constructor, __proto__, or prototype
- assert meta.referentialEqualities is an array tuple when root is referenced in a cycle but an object record when referencing nested siblings
- assert new SuperJSON({ dedupe: true }) replaces duplicate references with null in json while default instance preserves full subtree in json
- assert deserialize with inPlace: true mutates the input payload json while default deserialize copies it
파일
- NOTES.md
- csx.json
- package-lock.json
- package.json
- src/custom-and-classes.mjs
- test/contract.mjs