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# sigs.k8s.io/json
[](https://pkg.go.dev/sigs.k8s.io/json)
## Introduction
This library is a subproject of [sig-api-machinery](https://github.com/kubernetes/community/tree/master/sig-api-machinery#json).
It provides case-sensitive, integer-preserving JSON unmarshaling functions based on `encoding/json` `Unmarshal()`.
## Compatibility
The `UnmarshalCaseSensitivePreserveInts()` function behaves like `encoding/json#Unmarshal()` with the following differences:
- JSON object keys are treated case-sensitively.
Object keys must exactly match json tag names (for tagged struct fields)
or struct field names (for untagged struct fields).
- JSON integers are unmarshaled into `interface{}` fields as an `int64` instead of a
`float64` when possible, falling back to `float64` on any parse or overflow error.
- Syntax errors do not return an `encoding/json` `*SyntaxError` error.
Instead, they return an error which can be passed to `SyntaxErrorOffset()` to obtain an offset.
## Additional capabilities
The `UnmarshalStrict()` function decodes identically to `UnmarshalCaseSensitivePreserveInts()`,
and also returns non-fatal strict errors encountered while decoding:
- Duplicate fields encountered
- Unknown fields encountered
### Community, discussion, contribution, and support
You can reach the maintainers of this project via the
[sig-api-machinery mailing list / channels](https://github.com/kubernetes/community/tree/master/sig-api-machinery#contact).
### Code of conduct
Participation in the Kubernetes community is governed by the [Kubernetes Code of Conduct](code-of-conduct.md).
[owners]: https://git.k8s.io/community/contributors/guide/owners.md
[Creative Commons 4.0]: https://git.k8s.io/website/LICENSE
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