feat(iter/cartesian-square): add docs/types/test.ts

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Author: fikri-ajiwijaya

lib/node_modules/@stdlib/iter/cartesian-square/docs/types/index.d.ts

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+/*
+* @license Apache-2.0
+*
+* Copyright (c) 2026 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.
+*/
+
+// TypeScript Version: 4.1
+
+/// <reference types="@stdlib/types"/>
+
+import { Iterator as Iter, IterableIterator } from '@stdlib/types/iter';
+import { ArrayLike } from '@stdlib/types/array';
+
+// Define a union type representing both iterable and non-iterable iterators:
+type Iterator = Iter | IterableIterator;
+
+/**
+* Returns an iterator which iteratively computes the Cartesian square.
+*
+* @param x - input array
+* @throws {TypeError} first argument must be a collection
+* @returns iterator
+*
+* @example
+* var x = [ 1, 2 ];
+*
+* var iter = iterCartesianSquare( x );
+*
+* var v = iter.next().value;
+* // returns [ 1, 1 ]
+*
+* v = iter.next().value;
+* // returns [ 1, 2 ]
+*
+* v = iter.next().value;
+* // returns [ 2, 1 ]
+*
+* // ...
+*/
+declare function iterCartesianSquare<T>( x: ArrayLike<T> & object ): Iterator;
+
+
+// EXPORTS //
+
+export = iterCartesianSquare;

lib/node_modules/@stdlib/iter/cartesian-square/docs/types/test.ts

@@ -0,0 +1,43 @@
+/*
+* @license Apache-2.0
+*
+* Copyright (c) 2026 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 iterCartesianSquare = require( './index' );
+
+// TESTS //
+
+// The function returns an iterator...
+{
+	iterCartesianSquare( [ 1, 2 ] ); // $ExpectType Iterator
+}
+
+// The compiler throws an error if the function is provided a value other than an iterator protocol-compliant object...
+{
+	iterCartesianSquare( '5' ); // $ExpectError
+	iterCartesianSquare( 5 ); // $ExpectError
+	iterCartesianSquare( NaN ); // $ExpectError
+	iterCartesianSquare( true ); // $ExpectError
+	iterCartesianSquare( false ); // $ExpectError
+	iterCartesianSquare( null ); // $ExpectError
+	iterCartesianSquare( undefined ); // $ExpectError
+	iterCartesianSquare( {} ); // $ExpectError
+}
+
+// The compiler throws an error if the function is provided insufficient arguments...
+{
+	iterCartesianSquare(); // $ExpectError
+}