namespace unwrap error

[noriokaki]

Describe the bug

Version: 4.2.0
Crash when use namespace#unwrap() method.

To Reproduce

import { Project } from "ts-morph";
const project = new Project();
const source = project.createSourceFile(
    "./sample.ts",
    "//  aaaa bbbb \n namespace Foo {\n\texport class Bar {\n \t\tconstructor(){}\n \t\tsayHello(){return 'hello';}\n\t}\n}",
    { overwrite: true },
);
source.saveSync();
source.getNamespaces().forEach(ns => ns.unwrap());

Expected behavior
input

//  aaaa bbbb 
 namespace Foo {
	export class Bar {
 		constructor(){}
 		sayHello(){return 'hello';}
	}
}

expect

//  aaaa bbbb 
export class Bar {
 	constructor(){}
 	sayHello(){return 'hello';}
}

actual
Error: Manipulation error: Cannot get the next when at the end of the iterator.

[dsherret]

Thanks! Looks like I'm accidentally using position rather than getStart(true): https://github.com/dsherret/ts-morph/blob/d15ef55c9fbadefa34857d99335798b09a4ec561/src/manipulation/textManipulators/UnwrapTextManipulator.ts

[dsherret]

Fixed in 4.3.0 (released).