샘플

github.com/goccy/go-yaml 1.19.2: Switch from gopkg.in/yaml.v3 to goccy/go-yaml without the silent behaviour changes

검증된 샘플 — golang github.com/goccy/go-yaml 1.19.2: Switch from gopkg.in/yaml.v3 to goccy/go-yaml without the silent behaviour changes. go 1.26 · linux…

sha256:4c1243a3ad940f8354beaa9fe60e1a1301ff763323f40e400b202dfd982dfc56

MIT-0

실행 증거

선언된 환경과 서명된 실행을 분리해 두었습니다. 이 샘플이 무엇을 어디서 실행했는지 그대로 볼 수 있습니다.

선언된 환경 go 1.26 linux x64 go 1.26 go gomod

환경	컨트랙트	단계	실행일
go 1.26 · linux alpine/x64 · docker ed25519:a2ec939a4c60e243	PASS	compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS CONTAINER_RUN · go@1	2026-08-14

MIGRATION

목표: Switch from gopkg.in/yaml.v3 to goccy/go-yaml without the silent behaviour changes
패키지: github.com/goccy/go-yaml 1.19.2

gopkg.in/yaml.v3 3.0.1
심벌: yaml.Marshal
yaml.MarshalWithOptions
yaml.Indent
yaml.IndentSequence
yaml.Unmarshal
yaml.UnmarshalWithOptions
yaml.FormatError
yaml.AllowDuplicateMapKey
yaml.DuplicateKeyError
환경: go 1.26
생성일: 2026-08-14T20:16:38Z

assert the two libraries emit different bytes for the same value, two-space flush sequences vs four-space indented ones
assert Indent(4) plus IndentSequence(true) reproduces the yaml.v3 layout exactly
assert goccy decodes a positive integer into any as uint64 and a negative one as int64 where yaml.v3 gives int for both
assert goccy err.Error() already embeds the caret-annotated source and FormatError with inclSource false strips it back to one line
assert a duplicate mapping key is an error by default but does not match errors.As on yaml.DuplicateKeyError, and AllowDuplicateMapKey gives last-key-wins
assert the alias struct tag only emits an alias for pointer fields sharing an address and is silently ignored on value fields