refactor: rename type and rearrange tests

Author: kgryte

lib/node_modules/@stdlib/math/base/tools/normhermitepoly/docs/types/index.d.ts

@@ -26,7 +26,7 @@
 * @param x - value at which to evaluate a normalized Hermite polynomial
 * @returns result
 */
-type EvaluationFunction = ( x: number ) => number;
+type PolynomialFunction = ( x: number ) => number;
 
 /**
 * Interface for evaluating normalized Hermite polynomials.
@@ -69,7 +69,7 @@ interface NormHermitePoly {
 	* var v = polyval( 0.5 );
 	* // returns -0.75
 	*/
-	factory( n: number ): EvaluationFunction;
+	factory( n: number ): PolynomialFunction;
 }
 
 /**

lib/node_modules/@stdlib/math/base/tools/normhermitepoly/docs/types/test.ts

@@ -54,7 +54,17 @@ import normhermitepoly = require( './index' );
 
 // Attached to main export is a `factory` method which returns a function...
 {
-	normhermitepoly.factory( 3 ); // $ExpectType EvaluationFunction
+	normhermitepoly.factory( 3 ); // $ExpectType PolynomialFunction
+}
+
+// The compiler throws an error if the `factory` method is provided a first argument which is not a number...
+{
+	normhermitepoly.factory( true ); // $ExpectError
+	normhermitepoly.factory( false ); // $ExpectError
+	normhermitepoly.factory( 'abc' ); // $ExpectError
+	normhermitepoly.factory( [] ); // $ExpectError
+	normhermitepoly.factory( {} ); // $ExpectError
+	normhermitepoly.factory( ( x: number ): number => x ); // $ExpectError
 }
 
 // The compiler throws an error if the `factory` method is provided an unsupported number of arguments...
@@ -69,7 +79,7 @@ import normhermitepoly = require( './index' );
 	polyval( 1.0 ); // $ExpectType number
 }
 
-// The `factory` method returns a function which does not compile if provided a first argument which is not a number...
+// The compiler throws an error if the function returned by the `factory` method is provided a first argument which is not a number...
 {
 	const polyval = normhermitepoly.factory( 3 );
 	polyval( true ); // $ExpectError
@@ -79,13 +89,3 @@ import normhermitepoly = require( './index' );
 	polyval( {} ); // $ExpectError
 	polyval( ( x: number ): number => x ); // $ExpectError
 }
-
-// The compiler throws an error if the `factory` method is provided a first argument which is not a number...
-{
-	normhermitepoly.factory( true ); // $ExpectError
-	normhermitepoly.factory( false ); // $ExpectError
-	normhermitepoly.factory( 'abc' ); // $ExpectError
-	normhermitepoly.factory( [] ); // $ExpectError
-	normhermitepoly.factory( {} ); // $ExpectError
-	normhermitepoly.factory( ( x: number ): number => x ); // $ExpectError
-}