diff --git a/src/main/java/me/topchetoeu/jscript/common/Reading.java b/src/main/java/me/topchetoeu/jscript/common/Reading.java
index efa3e68..91ed24d 100644
--- a/src/main/java/me/topchetoeu/jscript/common/Reading.java
+++ b/src/main/java/me/topchetoeu/jscript/common/Reading.java
@@ -86,4 +86,7 @@ public class Reading {
 	public static String resourceToString(String name) {
 		return streamToString(resourceToStream(name));
 	}
+	public static byte[] resourceToBytes(String name) {
+		return streamToBytes(resourceToStream(name));
+	}
 }
diff --git a/src/main/java/me/topchetoeu/jscript/common/parsing/Location.java b/src/main/java/me/topchetoeu/jscript/common/parsing/Location.java
index 0bdf048..e9bae27 100644
--- a/src/main/java/me/topchetoeu/jscript/common/parsing/Location.java
+++ b/src/main/java/me/topchetoeu/jscript/common/parsing/Location.java
@@ -30,12 +30,15 @@ public abstract class Location implements Comparable<Location> {
 		};
 	}
 	public final Location nextLine() {
+		return changeLine(1);
+	}
+	public final Location changeLine(int offset) {
 		var self = this;
 
 		return new Location() {
 			@Override public Filename filename() { return self.filename(); }
 			@Override public int start() { return 0; }
-			@Override public int line() { return self.line() + 1; }
+			@Override public int line() { return self.line() + offset; }
 		};
 	}
 
diff --git a/src/main/java/me/topchetoeu/jscript/compilation/CompileResult.java b/src/main/java/me/topchetoeu/jscript/compilation/CompileResult.java
index e2040aa..2378f40 100644
--- a/src/main/java/me/topchetoeu/jscript/compilation/CompileResult.java
+++ b/src/main/java/me/topchetoeu/jscript/compilation/CompileResult.java
@@ -2,7 +2,7 @@ package me.topchetoeu.jscript.compilation;
 
 import java.util.List;
 import java.util.Map;
-
+import java.util.function.Function;
 import java.util.ArrayList;
 import java.util.HashMap;
 import java.util.LinkedList;
@@ -78,8 +78,11 @@ public final class CompileResult {
 		return instructions.toArray(new Instruction[0]);
 	}
 
+	public FunctionMap map(Function<Location, Location> mapper) {
+		return map.map(mapper).build(scope.localNames(), scope.capturableNames(), scope.captureNames());
+	}
 	public FunctionMap map() {
-		return map.build(scope.localNames(), scope.captureNames());
+		return map.build(scope.localNames(), scope.capturableNames(), scope.captureNames());
 	}
 	public FunctionBody body() {
 		var builtChildren = new FunctionBody[children.size()];