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JavaScript@langchain/langgraph-sdkuiInferMiddlewareStatesFromArray
Type●Since v1.7

InferMiddlewareStatesFromArray

Helper type to extract and merge states from an array of middleware. Recursively processes each middleware and intersects their state types.

Handles both readonly and mutable arrays/tuples explicitly.

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InferMiddlewareStatesFromArray: IsAny<
  T
> extends true  __type : T extends undefined | null  __type : T extends readonly []  __type : T extends []  __type : T extends readonly [First, ...Rest]  InferMiddlewareState<First>  InferMiddlewareStatesFromArray<Rest> : T extends [First, ...Rest]  InferMiddlewareState<First>  InferMiddlewareStatesFromArray<Rest> : T extends readonly U[]  InferMiddlewareState<U> : T extends U[]  InferMiddlewareState<U> : __type

Example

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type States = InferMiddlewareStatesFromArray<typeof middlewareArray>;
// Returns intersection of all middleware state types
View source on GitHub