assertError()

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Asserts that an unknown value is an ErrorLike object, which guarantees that it's an object that has at least two string properties: a non-empty name and message.

If the value is not an ErrorLike object, an error is thrown.

Signature:

function assertError(value: unknown): asserts value is ErrorLike;

Parameters

Parameter	Type	Description
value	unknown	an unknown value

**Returns:**

asserts value is ErrorLike