Fix type issue

Author: vanruesc

src/passes/LambdaPass.ts

@@ -12,15 +12,15 @@ export class LambdaPass extends Pass {
 	 * The function to execute.
 	 */
 
-	f: CallableFunction;
+	f: () => void;
 
 	/**
 	 * Constructs a new lambda pass.
 	 *
 	 * @param f - A function.
 	 */
 
-	constructor(f: CallableFunction) {
+	constructor(f: () => void) {
 
 		super("LambdaPass");
 		this.f = f;