@stdlib/assert/instance-of/docs/types/test.ts

Standard assertion utilities.

/*
* @license Apache-2.0
*
* Copyright (c) 2021 The Stdlib Authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
*    http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/

import instanceOf = require( './index' );


// TESTS //

// The function returns a boolean...
{
	instanceOf( [], Array ); // $ExpectType boolean
	instanceOf( {}, Object ); // $ExpectType boolean
}

// The compiler throws an error if the function is provided a second argument that is not a function...
{
	instanceOf( [], [] ); // $ExpectError
	instanceOf( [], {} ); // $ExpectError
	instanceOf( [], 123 ); // $ExpectError
	instanceOf( [], 'abc' ); // $ExpectError
	instanceOf( [], null ); // $ExpectError
	instanceOf( [], true ); // $ExpectError
	instanceOf( [], false ); // $ExpectError
}

// The compiler throws an error if the function is provided insufficient arguments...
{
	instanceOf(); // $ExpectError
	instanceOf( [] ); // $ExpectError
}