feat!: improve definition for type safety

Planeshifter · Planeshifter · commit becc613f1dd4 · 2023-05-13T12:24:23.000-04:00
diff --git a/lib/node_modules/@stdlib/utils/if-then/docs/types/index.d.ts b/lib/node_modules/@stdlib/utils/if-then/docs/types/index.d.ts
@@ -40,7 +40,7 @@
 * var z = ifthen( randu() > 0.5, x, y );
 * // returns <number>
 */
-declare function ifthen( bool: boolean, x: Function, y: Function ): any;
+declare function ifthen<T, U>( bool: boolean, x: () => T, y: () => U ): T | U;
 
 
 // EXPORTS //
diff --git a/lib/node_modules/@stdlib/utils/if-then/docs/types/test.ts b/lib/node_modules/@stdlib/utils/if-then/docs/types/test.ts
@@ -41,8 +41,8 @@ function zero(): number {
 
 // The function returns the return value of either the `x` or `y` function...
 {
-	ifthen( true, zero, one ); // $ExpectType any
-	ifthen( false, zero, one ); // $ExpectType any
+	ifthen( true, zero, one ); // $ExpectType number
+	ifthen( false, zero, one ); // $ExpectType number
 }
 
 // The compiler throws an error if the function is not provided a function as its first argument...

Original file line number	Diff line number	Diff line change
`@@ -41,8 +41,8 @@ function zero(): number {`
`41`	`41`
`42`	`42`	// The function returns the return value of either the `x` or `y` function...
`43`	`43`	`{`
`44`		`- ifthen( true, zero, one ); // $ExpectType any`
`45`		`- ifthen( false, zero, one ); // $ExpectType any`
	`44`	`+ ifthen( true, zero, one ); // $ExpectType number`
	`45`	`+ ifthen( false, zero, one ); // $ExpectType number`
`46`	`46`	`}`
`47`	`47`
`48`	`48`	`// The compiler throws an error if the function is not provided a function as its first argument...`