Support for Record with union value types

[annatisch]

Clear and concise description of the problem

I have an API the supports sending and receiving simple JSON payloads - the values of which will always be a union of string, int, float and boolean.
It's not currently possible to define this in tsp, and I must default to using Record<unknown>, which is itself an error that must be suppressed.
I think an arbitrary JSON payload would be a relatively common scenario, so allowing a union of basic types here seems reasonable. Otherwise, if supporting a union type here isn't an option, then Record<unknown> should be a valid payload declaration that does not require suppression.

The API in question here is the Azure Tables API - this question applies to all entity operations:
https://learn.microsoft.com/en-us/rest/api/storageservices/operations-on-entities
Existing swagger spec:
https://github.com/Azure/azure-rest-api-specs/blob/main/specification/cosmos-db/data-plane/Microsoft.Tables/preview/2019-02-02/table.json

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[markcowl]

You can represent a record of union types, like this.

Is this a question about a specific emitter that doesn't handle this type?

[microsoft-github-policy-service]

Hi @@annatisch. Since there hasn't been recent engagement, we're going to close this out. Please feel free to reopen if you have any further questions or concerns.