diff --git a/asm/src/main/java/dev/openrs2/asm/transform/Transformer.java b/asm/src/main/java/dev/openrs2/asm/transform/Transformer.java
deleted file mode 100644
index 03ca6d46..00000000
--- a/asm/src/main/java/dev/openrs2/asm/transform/Transformer.java
+++ /dev/null
@@ -1,80 +0,0 @@
-package dev.openrs2.asm.transform;
-
-import dev.openrs2.asm.classpath.ClassPath;
-import dev.openrs2.asm.classpath.Library;
-import org.objectweb.asm.Opcodes;
-import org.objectweb.asm.tree.ClassNode;
-import org.objectweb.asm.tree.FieldNode;
-import org.objectweb.asm.tree.MethodNode;
-import org.objectweb.asm.tree.analysis.AnalyzerException;
-
-public abstract class Transformer {
-	public final void transform(ClassPath classPath) throws AnalyzerException {
-		preTransform(classPath);
-
-		boolean changed;
-		do {
-			changed = false;
-
-			prePass(classPath);
-			for (var library : classPath.getLibraries()) {
-				for (var clazz : library) {
-					changed |= transformClass(classPath, library, clazz);
-
-					for (var field : clazz.fields) {
-						changed |= transformField(classPath, library, clazz, field);
-					}
-
-					for (var method : clazz.methods) {
-						changed |= preTransformMethod(classPath, library, clazz, method);
-
-						if ((method.access & (Opcodes.ACC_NATIVE | Opcodes.ACC_ABSTRACT)) == 0) {
-							changed |= transformCode(classPath, library, clazz, method);
-						}
-
-						changed |= postTransformMethod(classPath, library, clazz, method);
-					}
-				}
-			}
-			postPass(classPath);
-		} while (changed);
-
-		postTransform(classPath);
-	}
-
-	protected void preTransform(ClassPath classPath) throws AnalyzerException {
-		/* empty */
-	}
-
-	protected void prePass(ClassPath classPath) throws AnalyzerException {
-		/* empty */
-	}
-
-	protected boolean transformClass(ClassPath classPath, Library library, ClassNode clazz) throws AnalyzerException {
-		return false;
-	}
-
-	protected boolean transformField(ClassPath classPath, Library library, ClassNode clazz, FieldNode field) throws AnalyzerException {
-		return false;
-	}
-
-	protected boolean preTransformMethod(ClassPath classPath, Library library, ClassNode clazz, MethodNode method) throws AnalyzerException {
-		return false;
-	}
-
-	protected boolean transformCode(ClassPath classPath, Library library, ClassNode clazz, MethodNode method) throws AnalyzerException {
-		return false;
-	}
-
-	protected boolean postTransformMethod(ClassPath classPath, Library library, ClassNode clazz, MethodNode method) throws AnalyzerException {
-		return false;
-	}
-
-	protected void postPass(ClassPath classPath) throws AnalyzerException {
-		/* empty */
-	}
-
-	protected void postTransform(ClassPath classPath) throws AnalyzerException {
-		/* empty */
-	}
-}
diff --git a/asm/src/main/java/dev/openrs2/asm/transform/Transformer.kt b/asm/src/main/java/dev/openrs2/asm/transform/Transformer.kt
new file mode 100644
index 00000000..cc941d64
--- /dev/null
+++ b/asm/src/main/java/dev/openrs2/asm/transform/Transformer.kt
@@ -0,0 +1,110 @@
+package dev.openrs2.asm.transform
+
+import dev.openrs2.asm.classpath.ClassPath
+import dev.openrs2.asm.classpath.Library
+import org.objectweb.asm.Opcodes
+import org.objectweb.asm.tree.ClassNode
+import org.objectweb.asm.tree.FieldNode
+import org.objectweb.asm.tree.MethodNode
+import org.objectweb.asm.tree.analysis.AnalyzerException
+
+abstract class Transformer {
+    @Throws(AnalyzerException::class)
+    fun transform(classPath: ClassPath) {
+        preTransform(classPath)
+
+        var changed: Boolean
+        do {
+            changed = false
+
+            prePass(classPath)
+            for (library in classPath.libraries) {
+                for (clazz in library) {
+                    changed = changed or transformClass(classPath, library, clazz)
+
+                    for (field in clazz.fields) {
+                        changed = changed or transformField(classPath, library, clazz, field)
+                    }
+
+                    for (method in clazz.methods) {
+                        changed = changed or preTransformMethod(classPath, library, clazz, method)
+
+                        if (method.access and (Opcodes.ACC_NATIVE or Opcodes.ACC_ABSTRACT) == 0) {
+                            changed = changed or transformCode(classPath, library, clazz, method)
+                        }
+
+                        changed = changed or postTransformMethod(classPath, library, clazz, method)
+                    }
+                }
+            }
+            postPass(classPath)
+        } while (changed)
+
+        postTransform(classPath)
+    }
+
+    @Throws(AnalyzerException::class)
+    protected open fun preTransform(classPath: ClassPath) {
+        /* empty */
+    }
+
+    @Throws(AnalyzerException::class)
+    protected open fun prePass(classPath: ClassPath) {
+        /* empty */
+    }
+
+    @Throws(AnalyzerException::class)
+    protected open fun transformClass(classPath: ClassPath, library: Library, clazz: ClassNode): Boolean {
+        return false
+    }
+
+    @Throws(AnalyzerException::class)
+    protected open fun transformField(
+        classPath: ClassPath,
+        library: Library,
+        clazz: ClassNode,
+        field: FieldNode
+    ): Boolean {
+        return false
+    }
+
+    @Throws(AnalyzerException::class)
+    protected open fun preTransformMethod(
+        classPath: ClassPath,
+        library: Library,
+        clazz: ClassNode,
+        method: MethodNode
+    ): Boolean {
+        return false
+    }
+
+    @Throws(AnalyzerException::class)
+    protected open fun transformCode(
+        classPath: ClassPath,
+        library: Library,
+        clazz: ClassNode,
+        method: MethodNode
+    ): Boolean {
+        return false
+    }
+
+    @Throws(AnalyzerException::class)
+    protected open fun postTransformMethod(
+        classPath: ClassPath,
+        library: Library,
+        clazz: ClassNode,
+        method: MethodNode
+    ): Boolean {
+        return false
+    }
+
+    @Throws(AnalyzerException::class)
+    protected open fun postPass(classPath: ClassPath) {
+        /* empty */
+    }
+
+    @Throws(AnalyzerException::class)
+    protected open fun postTransform(classPath: ClassPath) {
+        /* empty */
+    }
+}