Type for serializable objects?

[chen-ye]

Would it make sense to create a type for serializable objects?

Similar to Jsonify et al., this would match values that could losslessly be deep-copied via structuredClone or postMessage.

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[sindresorhus]

How would you use it?

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For reference, the algorithm for structuredClone: https://developer.mozilla.org/en-US/docs/Web/API/Web_Workers_API/Structured_clone_algorithm

[chen-ye]

My two use cases are similar to how I currently use the Jsonify family of types:

• To ensure that an application state object as passed between a web worker and the main thread remains serializable
• To more strongly type the outputs of a structuredClone call

[sindresorhus]

It's more like Jsonifiable. Could maybe be called StructuredCloneable.