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Vitest · Matcher

toBeCallableWith

toBeCallableWith checks that a function type can be called with the given arguments. It is used in Vitest type tests and does not perform a runtime call.

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Syntax

expectTypeOf<FunctionType>().toBeCallableWith(...args)

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  • expectTypeOf
  • parameters
  • parameter
  • toBeConstructibleWith

Source: expectTypeOf | Vitest. Checked 2026-11-03.