Apply suggestions from code review

Co-authored-by: Athan <kgryte@gmail.com>
Signed-off-by: Athan <kgryte@gmail.com>

Author: kgryte

lib/node_modules/@stdlib/blas/ext/base/gcircshift/docs/types/index.d.ts

@@ -41,7 +41,7 @@ interface Routine {
 	* gcircshift( x.length, 2, x, 1 );
 	* // x => [ 4.0, 5.0, 1.0, 2.0, 3.0 ]
 	*/
-	<T = unknown>( N: number, k: number, x: Collection<T>, strideX: number ): Collection<T>;
+	<T = unknown, U extends Collection<T> = Collection<T>>( N: number, k: number, x: U, strideX: number ): U;
 
 	/**
 	* Circularly shifts the elements of a strided array by a specified number of positions using alternative indexing semantics.
@@ -59,7 +59,7 @@ interface Routine {
 	* gcircshift.ndarray( x.length, 2, x, 1, 0 );
 	* // x => [ 4.0, 5.0, 1.0, 2.0, 3.0 ]
 	*/
-	ndarray<T = unknown>( N: number, k: number, x: Collection<T>, strideX: number, offsetX: number ): Collection<T>;
+	ndarray<T = unknown, U extends Collection<T> = Collection<T>>( N: number, k: number, x: U, strideX: number, offsetX: number ): U;
 }
 
 /**

lib/node_modules/@stdlib/blas/ext/base/gcircshift/docs/types/test.ts

@@ -25,7 +25,7 @@ import gcircshift = require( './index' );
 {
 	const x = new Float64Array( 10 );
 
-	gcircshift( x.length, 2, x, 1 ); // $ExpectType Collection<number>
+	gcircshift( x.length, 2, x, 1 ); // $ExpectType Float64Array
 }
 
 // The compiler throws an error if the function is provided a first argument which is not a number...
@@ -99,7 +99,7 @@ import gcircshift = require( './index' );
 {
 	const x = new Float64Array( 10 );
 
-	gcircshift.ndarray( x.length, 2, x, 1, 0 ); // $ExpectType Collection<number>
+	gcircshift.ndarray( x.length, 2, x, 1, 0 ); // $ExpectType Float64Array
 }
 
 // The compiler throws an error if the `ndarray` method is provided a first argument which is not a number...