import { OptionAsserter } from "https://deno.land/x/typeguardkit@0.33.0/mod.ts";
An OptionAsserter is an Asserter for the union of the Type of its
definedTypeAsserter with undefined, intended to be used with
ObjectAsserter to assert optional properties.
The provided definedTypeAsserter is made accessible as a property of the
created OptionAsserter.
The option function can be used to create an OptionAsserter without
specifying a typeName.
Example:
import { _string, OptionAsserter } from "typeguardkit";
export const _OptionalString = new OptionAsserter("OptionalString", _string);
Constructors
new
OptionAsserter(typeName: string, definedTypeAsserter: DefinedTypeAsserter)Type Parameters
DefinedTypeAsserter extends Asserter<unknown>
Methods
assert(value: unknown, valueName?: string): Asserted<DefinedTypeAsserter> | undefined