assertType
assertType<
T>(value,validator,errorMessage?):asserts value is T
Assert that a value is of type T, throwing if validation fails
Type Parameters
Section titled “Type Parameters”| Type Parameter |
|---|
T |
Parameters
Section titled “Parameters”| Parameter | Type | Default value | Description |
|---|---|---|---|
value |
unknown |
undefined |
The value to assert |
validator |
(v) => v is T |
undefined |
A type guard function to validate the value |
errorMessage |
string |
'Type assertion failed' |
Optional custom error message |
Returns
Section titled “Returns”asserts value is T
Throws
Section titled “Throws”Error if validation fails
Example
Section titled “Example”const response = await client.functions.invoke('get-user')assertType(response.data, isObject, 'Expected user object')// Now response.data is typed as Record<string, unknown>