[VertexAI] Fix typings for functionDeclaration.parameters. #8948
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Fixes #8944
This fix allows passing an
ObjectSchema
created bySchema.object()
tofunctionDeclaration.parameters
without any TS errors. It also forbids passing a plain JSON object tofunctionDeclaration.parameters
if it has anoptionalProperties
property, as that is a convenience input method and should not be passed to the backend request. Users can still use therequired
property.I experimented with intercepting plain JSON objects passed to
functionDeclaration.parameters
and processing theoptionalProperties
into arequired
array but concluded there are too many places this needs to be done (on getGenerativeModel and on each of its methods, possibly on getImagenModel and others in the future) and it adds a lot of unneeded code for a case that can be handled simply by usingSchema.object()
or manually filling out therequired
field.