diff --git a/src/java/me/topchetoeu/jscript/common/json/JSON.java b/src/java/me/topchetoeu/jscript/common/json/JSON.java
index 0b639f0..2aaa8f1 100644
--- a/src/java/me/topchetoeu/jscript/common/json/JSON.java
+++ b/src/java/me/topchetoeu/jscript/common/json/JSON.java
@@ -9,7 +9,7 @@ import me.topchetoeu.jscript.compilation.parsing.Operator;
 import me.topchetoeu.jscript.compilation.parsing.ParseRes;
 import me.topchetoeu.jscript.compilation.parsing.Parsing;
 import me.topchetoeu.jscript.compilation.parsing.Token;
-import me.topchetoeu.jscript.runtime.Context;
+import me.topchetoeu.jscript.runtime.Extensions;
 import me.topchetoeu.jscript.runtime.exceptions.EngineException;
 import me.topchetoeu.jscript.runtime.exceptions.SyntaxException;
 import me.topchetoeu.jscript.runtime.values.ArrayValue;
@@ -32,7 +32,7 @@ public class JSON {
         if (val.isNull()) return Values.NULL;
         return null;
     }
-    private static JSONElement fromJs(Context ctx, Object val, HashSet<Object> prev) {
+    private static JSONElement fromJs(Extensions ext, Object val, HashSet<Object> prev) {
         if (val instanceof Boolean) return JSONElement.bool((boolean)val);
         if (val instanceof Number) return JSONElement.number(((Number)val).doubleValue());
         if (val instanceof String) return JSONElement.string((String)val);
@@ -44,7 +44,7 @@ public class JSON {
             var res = new JSONList();
 
             for (var el : ((ArrayValue)val).toArray()) {
-                var jsonEl = fromJs(ctx, el, prev);
+                var jsonEl = fromJs(ext, el, prev);
                 if (jsonEl == null) jsonEl = JSONElement.NULL;
                 res.add(jsonEl);
             }
@@ -58,8 +58,8 @@ public class JSON {
 
             var res = new JSONMap();
 
-            for (var el : Values.getMembers(ctx, val, false, false)) {
-                var jsonEl = fromJs(ctx, Values.getMember(ctx, val, el), prev);
+            for (var el : Values.getMembers(ext, val, false, false)) {
+                var jsonEl = fromJs(ext, Values.getMember(ext, val, el), prev);
                 if (jsonEl == null) continue;
                 if (el instanceof String || el instanceof Number) res.put(el.toString(), jsonEl);
             }
@@ -70,8 +70,8 @@ public class JSON {
         if (val == null) return null;
         return null;
     }
-    public static JSONElement fromJs(Context ctx, Object val) {
-        return fromJs(ctx, val, new HashSet<>());
+    public static JSONElement fromJs(Extensions ext, Object val) {
+        return fromJs(ext, val, new HashSet<>());
     }
 
     public static ParseRes<String> parseIdentifier(List<Token> tokens, int i) {
diff --git a/src/java/me/topchetoeu/jscript/lib/AsyncFunctionLib.java b/src/java/me/topchetoeu/jscript/lib/AsyncFunctionLib.java
index 6b10d51..2151164 100644
--- a/src/java/me/topchetoeu/jscript/lib/AsyncFunctionLib.java
+++ b/src/java/me/topchetoeu/jscript/lib/AsyncFunctionLib.java
@@ -2,6 +2,7 @@ package me.topchetoeu.jscript.lib;
 
 import me.topchetoeu.jscript.lib.PromiseLib.Handle;
 import me.topchetoeu.jscript.runtime.Context;
+import me.topchetoeu.jscript.runtime.Extensions;
 import me.topchetoeu.jscript.runtime.Frame;
 import me.topchetoeu.jscript.runtime.exceptions.EngineException;
 import me.topchetoeu.jscript.runtime.values.CodeFunction;
@@ -65,8 +66,9 @@ public class AsyncFunctionLib extends FunctionValue {
     }
 
     @Override
-    public Object call(Context ctx, Object thisArg, Object ...args) {
+    public Object call(Extensions ext, Object thisArg, Object ...args) {
         var handler = new AsyncHelper();
+        var ctx = Context.of(ext);
 
         var newArgs = new Object[args.length + 1];
         newArgs[0] = new NativeFunction("await", handler::await);
diff --git a/src/java/me/topchetoeu/jscript/lib/AsyncGeneratorFunctionLib.java b/src/java/me/topchetoeu/jscript/lib/AsyncGeneratorFunctionLib.java
index 61fa95f..43e7689 100644
--- a/src/java/me/topchetoeu/jscript/lib/AsyncGeneratorFunctionLib.java
+++ b/src/java/me/topchetoeu/jscript/lib/AsyncGeneratorFunctionLib.java
@@ -1,6 +1,7 @@
 package me.topchetoeu.jscript.lib;
 
 import me.topchetoeu.jscript.runtime.Context;
+import me.topchetoeu.jscript.runtime.Extensions;
 import me.topchetoeu.jscript.runtime.Frame;
 import me.topchetoeu.jscript.runtime.exceptions.EngineException;
 import me.topchetoeu.jscript.runtime.values.CodeFunction;
@@ -13,7 +14,7 @@ public class AsyncGeneratorFunctionLib extends FunctionValue {
     public final CodeFunction func;
 
     @Override
-    public Object call(Context ctx, Object thisArg, Object ...args) {
+    public Object call(Extensions ext, Object thisArg, Object ...args) {
         var handler = new AsyncGeneratorLib();
 
         var newArgs = new Object[args.length + 2];
@@ -21,7 +22,7 @@ public class AsyncGeneratorFunctionLib extends FunctionValue {
         newArgs[1] = new NativeFunction("yield", handler::yield);
         System.arraycopy(args, 0, newArgs, 2, args.length);
 
-        handler.frame = new Frame(ctx, thisArg, newArgs, func);
+        handler.frame = new Frame(Context.of(ext), thisArg, newArgs, func);
         return handler;
     }
 
diff --git a/src/java/me/topchetoeu/jscript/lib/AsyncGeneratorLib.java b/src/java/me/topchetoeu/jscript/lib/AsyncGeneratorLib.java
index 3096f51..32778ac 100644
--- a/src/java/me/topchetoeu/jscript/lib/AsyncGeneratorLib.java
+++ b/src/java/me/topchetoeu/jscript/lib/AsyncGeneratorLib.java
@@ -101,7 +101,7 @@ public class AsyncGeneratorLib {
     }
     @Expose public PromiseLib __throw(Arguments args) {
         this.currPromise = new PromiseLib();
-        next(args.ctx, Values.NO_RETURN, Values.NO_RETURN, new EngineException(args.get(0)).setCtx(args.ctx));
+        next(args.ctx, Values.NO_RETURN, Values.NO_RETURN, new EngineException(args.get(0)).setExtensions(args.ctx));
         return this.currPromise;
     }
 }
\ No newline at end of file
diff --git a/src/java/me/topchetoeu/jscript/lib/GeneratorFunctionLib.java b/src/java/me/topchetoeu/jscript/lib/GeneratorFunctionLib.java
index 7d95ef6..7075dae 100644
--- a/src/java/me/topchetoeu/jscript/lib/GeneratorFunctionLib.java
+++ b/src/java/me/topchetoeu/jscript/lib/GeneratorFunctionLib.java
@@ -1,6 +1,7 @@
 package me.topchetoeu.jscript.lib;
 
 import me.topchetoeu.jscript.runtime.Context;
+import me.topchetoeu.jscript.runtime.Extensions;
 import me.topchetoeu.jscript.runtime.Frame;
 import me.topchetoeu.jscript.runtime.exceptions.EngineException;
 import me.topchetoeu.jscript.runtime.values.CodeFunction;
@@ -12,14 +13,14 @@ import me.topchetoeu.jscript.utils.interop.WrapperName;
 public class GeneratorFunctionLib extends FunctionValue {
     public final CodeFunction func;
 
-    @Override public Object call(Context ctx, Object thisArg, Object ...args) {
+    @Override public Object call(Extensions ext, Object thisArg, Object ...args) {
         var handler = new GeneratorLib();
 
         var newArgs = new Object[args.length + 1];
         newArgs[0] = new NativeFunction("yield", handler::yield);
         System.arraycopy(args, 0, newArgs, 1, args.length);
 
-        handler.frame = new Frame(ctx, thisArg, newArgs, func);
+        handler.frame = new Frame(Context.of(ext), thisArg, newArgs, func);
         return handler;
     }
 
diff --git a/src/java/me/topchetoeu/jscript/lib/GeneratorLib.java b/src/java/me/topchetoeu/jscript/lib/GeneratorLib.java
index 19d93ae..9849c7d 100644
--- a/src/java/me/topchetoeu/jscript/lib/GeneratorLib.java
+++ b/src/java/me/topchetoeu/jscript/lib/GeneratorLib.java
@@ -59,7 +59,7 @@ public class GeneratorLib {
         else return next(args.ctx, args.get(0), Values.NO_RETURN, null);
     }
     @Expose public ObjectValue __throw(Arguments args) {
-        return next(args.ctx, Values.NO_RETURN, Values.NO_RETURN, new EngineException(args.get(0)).setCtx(args.ctx));
+        return next(args.ctx, Values.NO_RETURN, Values.NO_RETURN, new EngineException(args.get(0)).setExtensions(args.ctx));
     }
     @Expose public ObjectValue __return(Arguments args) {
         return next(args.ctx, Values.NO_RETURN, args.get(0), null);
diff --git a/src/java/me/topchetoeu/jscript/lib/Internals.java b/src/java/me/topchetoeu/jscript/lib/Internals.java
index 8c276c8..67564c6 100644
--- a/src/java/me/topchetoeu/jscript/lib/Internals.java
+++ b/src/java/me/topchetoeu/jscript/lib/Internals.java
@@ -17,6 +17,7 @@ import me.topchetoeu.jscript.utils.interop.Expose;
 import me.topchetoeu.jscript.utils.interop.ExposeField;
 import me.topchetoeu.jscript.utils.interop.ExposeTarget;
 import me.topchetoeu.jscript.utils.interop.ExposeType;
+import me.topchetoeu.jscript.utils.interop.NativeWrapperProvider;
 import me.topchetoeu.jscript.utils.modules.ModuleRepo;
 
 public class Internals {
@@ -51,7 +52,7 @@ public class Internals {
             try { Thread.sleep(ms, ns); }
             catch (InterruptedException e) { return; }
 
-            args.ctx.get(EventLoop.KEY).pushMsg(() -> func.call(new Context(args.ctx.environment), null, arguments), false);
+            args.ctx.get(EventLoop.KEY).pushMsg(() -> func.call(new Context(args.ctx.extensions), null, arguments), false);
         });
 
         thread.start();
@@ -79,7 +80,7 @@ public class Internals {
                 }
                 catch (InterruptedException e) { return; }
 
-                args.ctx.get(EventLoop.KEY).pushMsg(() -> func.call(new Context(args.ctx.environment), null, arguments), false);
+                args.ctx.get(EventLoop.KEY).pushMsg(() -> func.call(new Context(args.ctx.extensions), null, arguments), false);
             }
         });
         thread.start();
@@ -165,8 +166,8 @@ public class Internals {
     }
 
     public static Environment apply(Environment env) {
-        var wp = env.wrappers;
-        var glob = env.global = new GlobalScope(wp.getNamespace(Internals.class));
+        var wp = new NativeWrapperProvider();
+        var glob = new GlobalScope(wp.getNamespace(Internals.class));
 
         glob.define(null, "Math", false, wp.getNamespace(MathLib.class));
         glob.define(null, "JSON", false, wp.getNamespace(JSONLib.class));
@@ -209,8 +210,12 @@ public class Internals {
         env.add(Environment.TYPE_ERR_PROTO, wp.getProto(TypeErrorLib.class));
         env.add(Environment.RANGE_ERR_PROTO, wp.getProto(RangeErrorLib.class));
 
-        Values.setPrototype(Context.NULL, wp.getProto(ObjectLib.class), null);
         env.add(Environment.REGEX_CONSTR, wp.getConstr(RegExpLib.class));
+        Values.setPrototype(new Context(), wp.getProto(ObjectLib.class), null);
+
+        env.add(NativeWrapperProvider.KEY, wp);
+        env.add(GlobalScope.KEY, glob);
+
 
         return env;
     }
diff --git a/src/java/me/topchetoeu/jscript/lib/PromiseLib.java b/src/java/me/topchetoeu/jscript/lib/PromiseLib.java
index 6025cb4..66829de 100644
--- a/src/java/me/topchetoeu/jscript/lib/PromiseLib.java
+++ b/src/java/me/topchetoeu/jscript/lib/PromiseLib.java
@@ -65,7 +65,7 @@ public class PromiseLib {
         }
 
         if (state == STATE_REJECTED && !handled) {
-            Values.printError(((EngineException)val).setCtx(ctx), "(in promise)");
+            Values.printError(((EngineException)val).setExtensions(ctx), "(in promise)");
         }
 
         handles = null;
@@ -207,7 +207,7 @@ public class PromiseLib {
     }
     @Expose(value = "reject", target = ExposeTarget.STATIC)
     public static PromiseLib __ofRejected(Arguments args) {
-        return ofRejected(args.ctx, new EngineException(args.get(0)).setCtx(args.ctx));
+        return ofRejected(args.ctx, new EngineException(args.get(0)).setExtensions(args.ctx));
     }
 
     @Expose(target = ExposeTarget.STATIC)
@@ -215,7 +215,7 @@ public class PromiseLib {
         if (!(args.get(0) instanceof ArrayValue)) throw EngineException.ofType("Expected argument for any to be an array.");
         var promises = args.convert(0, ArrayValue.class); 
 
-        if (promises.size() == 0) return ofRejected(args.ctx, EngineException.ofError("No promises passed to 'Promise.any'.").setCtx(args.ctx));
+        if (promises.size() == 0) return ofRejected(args.ctx, EngineException.ofError("No promises passed to 'Promise.any'.").setExtensions(args.ctx));
         var n = new int[] { promises.size() };
         var res = new PromiseLib();
         var errors = new ArrayValue();
@@ -230,7 +230,7 @@ public class PromiseLib {
                 public void onReject(EngineException err) {
                     errors.set(args.ctx, index, err.value);
                     n[0]--;
-                    if (n[0] <= 0) res.reject(args.ctx, new EngineException(errors).setCtx(args.ctx));
+                    if (n[0] <= 0) res.reject(args.ctx, new EngineException(errors).setExtensions(args.ctx));
                 }
             });
         }
@@ -390,7 +390,7 @@ public class PromiseLib {
                     return null;
                 }),
                 new NativeFunction(null, _args -> {
-                    res.reject(_args.ctx, new EngineException(_args.get(0)).setCtx(_args.ctx));
+                    res.reject(_args.ctx, new EngineException(_args.get(0)).setExtensions(_args.ctx));
                     return null;
                 })
             );
diff --git a/src/java/me/topchetoeu/jscript/runtime/Childable.java b/src/java/me/topchetoeu/jscript/runtime/Childable.java
new file mode 100644
index 0000000..f1f358e
--- /dev/null
+++ b/src/java/me/topchetoeu/jscript/runtime/Childable.java
@@ -0,0 +1,5 @@
+package me.topchetoeu.jscript.runtime;
+
+public interface Childable {
+    Object child();
+}
\ No newline at end of file
diff --git a/src/java/me/topchetoeu/jscript/runtime/Context.java b/src/java/me/topchetoeu/jscript/runtime/Context.java
index 0f93e4b..950f068 100644
--- a/src/java/me/topchetoeu/jscript/runtime/Context.java
+++ b/src/java/me/topchetoeu/jscript/runtime/Context.java
@@ -11,39 +11,37 @@ import me.topchetoeu.jscript.runtime.values.CodeFunction;
 import me.topchetoeu.jscript.runtime.values.FunctionValue;
 
 public class Context implements Extensions {
-    public static final Context NULL = new Context();
-
     public final Context parent;
-    public final Environment environment;
+    public final Extensions extensions;
     public final Frame frame;
     // public final Engine engine;
     public final int stackSize;
 
     @Override public <T> void add(Key<T> key, T obj) {
-        if (environment != null) environment.add(key, obj);
+        if (extensions != null) extensions.add(key, obj);
         // else if (engine != null) engine.add(key, obj);
     }
     @Override public <T> T get(Key<T> key) {
-        if (environment != null && environment.has(key)) return environment.get(key);
+        if (extensions != null && extensions.has(key)) return extensions.get(key);
         // else if (engine != null && engine.has(key)) return engine.get(key);
         return null;
     }
     @Override public boolean has(Key<?> key) {
         return
-            environment != null && environment.has(key);
+            extensions != null && extensions.has(key);
             // engine != null && engine.has(key);
     }
     @Override public boolean remove(Key<?> key) {
         var res = false;
 
-        if (environment != null) res |= environment.remove(key);
+        if (extensions != null) res |= extensions.remove(key);
         // else if (engine != null) res |= engine.remove(key);
 
         return res;
     }
     @Override public Iterable<Key<?>> keys() {
-        if (environment == null) return List.of();
-        else return environment.keys();
+        if (extensions == null) return List.of();
+        else return extensions.keys();
 
         // if (engine == null && environment == null) return List.of();
         // if (engine == null) return environment.keys();
@@ -57,12 +55,12 @@ public class Context implements Extensions {
 
     public FunctionValue compile(Filename filename, String raw) {
         DebugContext.get(this).onSource(filename, raw);
-        var result = new CodeFunction(environment, filename.toString(), Compiler.get(this).compile(filename, raw), new ValueVariable[0]);
+        var result = new CodeFunction(extensions, filename.toString(), Compiler.get(this).compile(filename, raw), new ValueVariable[0]);
         return result;
     }
 
     public Context pushFrame(Frame frame) {
-        var res = new Context(this, frame.function.environment, frame, stackSize + 1);
+        var res = new Context(this, frame.function.extensions, frame, stackSize + 1);
         return res;
     }
 
@@ -88,10 +86,9 @@ public class Context implements Extensions {
         };
     }
 
-
-    private Context(Context parent, Environment environment, Frame frame, int stackSize) {
+    private Context(Context parent, Extensions ext, Frame frame, int stackSize) {
         this.parent = parent;
-        this.environment = environment;
+        this.extensions = ext;
         this.frame = frame;
         this.stackSize = stackSize;
 
@@ -103,7 +100,16 @@ public class Context implements Extensions {
     public Context() {
         this(null, null, null, 0);
     }
-    public Context(Environment env) {
-        this(null, env, null, 0);
+    public Context(Extensions ext) {
+        this(null, ext, null, 0);
+    }
+
+    public static Context of(Extensions ext) {
+        if (ext instanceof Context) return (Context)ext;
+        return new Context(ext);
+    }
+    public static Extensions clean(Extensions ext) {
+        if (ext instanceof Context) return ((Context)ext).extensions;
+        else return ext;
     }
 }
diff --git a/src/java/me/topchetoeu/jscript/runtime/Copyable.java b/src/java/me/topchetoeu/jscript/runtime/Copyable.java
new file mode 100644
index 0000000..cb2e75e
--- /dev/null
+++ b/src/java/me/topchetoeu/jscript/runtime/Copyable.java
@@ -0,0 +1,5 @@
+package me.topchetoeu.jscript.runtime;
+
+public interface Copyable {
+    Object copy();
+}
\ No newline at end of file
diff --git a/src/java/me/topchetoeu/jscript/runtime/Environment.java b/src/java/me/topchetoeu/jscript/runtime/Environment.java
index ff123f3..4e232d8 100644
--- a/src/java/me/topchetoeu/jscript/runtime/Environment.java
+++ b/src/java/me/topchetoeu/jscript/runtime/Environment.java
@@ -3,11 +3,9 @@ package me.topchetoeu.jscript.runtime;
 import java.util.HashMap;
 
 import me.topchetoeu.jscript.runtime.exceptions.EngineException;
-import me.topchetoeu.jscript.runtime.scope.GlobalScope;
 import me.topchetoeu.jscript.runtime.values.FunctionValue;
 import me.topchetoeu.jscript.runtime.values.NativeFunction;
 import me.topchetoeu.jscript.runtime.values.ObjectValue;
-import me.topchetoeu.jscript.utils.interop.NativeWrapperProvider;
 
 @SuppressWarnings("unchecked")
 public class Environment implements Extensions {
@@ -31,9 +29,6 @@ public class Environment implements Extensions {
 
     private HashMap<Key<?>, Object> data = new HashMap<>();
 
-    public GlobalScope global;
-    public WrapperProvider wrappers;
-
     @Override public <T> void add(Key<T> key, T obj) {
         data.put(key, obj);
     }
@@ -56,37 +51,11 @@ public class Environment implements Extensions {
 
     public static FunctionValue regexConstructor(Extensions ext) {
         return ext.init(REGEX_CONSTR, new NativeFunction("RegExp", args -> {
-            throw EngineException.ofError("Regular expressions not supported.").setCtx(args.ctx);
+            throw EngineException.ofError("Regular expressions not supported.").setExtensions(args.ctx);
         }));
     }
 
-    public Environment copy() {
-        var res = new Environment();
-
-        res.wrappers = wrappers.fork(res);
-        res.global = global;
-        res.data.putAll(data);
-
-        return res;
-    }
-    public Environment child() {
-        var res = copy();
-        res.global = res.global.globalChild();
-        return res;
-    }
-
     public Context context() {
         return new Context(this);
     }
-
-    public Environment(WrapperProvider nativeConverter, GlobalScope global) {
-        if (nativeConverter == null) nativeConverter = new NativeWrapperProvider();
-        if (global == null) global = new GlobalScope();
-
-        this.wrappers = nativeConverter;
-        this.global = global;
-    }
-    public Environment() {
-        this(null, null);
-    }
 }
diff --git a/src/java/me/topchetoeu/jscript/runtime/EventLoop.java b/src/java/me/topchetoeu/jscript/runtime/EventLoop.java
index 68920d2..6046971 100644
--- a/src/java/me/topchetoeu/jscript/runtime/EventLoop.java
+++ b/src/java/me/topchetoeu/jscript/runtime/EventLoop.java
@@ -23,15 +23,15 @@ public interface EventLoop {
         return pushMsg(() -> { runnable.run(); return null; }, micro);
     }
 
-    public default DataNotifier<Object> pushMsg(boolean micro, Environment env, FunctionValue func, Object thisArg, Object ...args) {
+    public default DataNotifier<Object> pushMsg(boolean micro, Extensions ext, FunctionValue func, Object thisArg, Object ...args) {
         return pushMsg(() -> {
-            return func.call(new Context(env), thisArg, args);
+            return func.call(Context.of(ext), thisArg, args);
         }, micro);
     }
-    public default DataNotifier<Object> pushMsg(boolean micro, Environment env, Filename filename, String raw, Object thisArg, Object ...args) {
+    public default DataNotifier<Object> pushMsg(boolean micro, Extensions ext, Filename filename, String raw, Object thisArg, Object ...args) {
         return pushMsg(() -> {
-            var ctx = new Context(env);
-            return ctx.compile(filename, raw).call(new Context(env), thisArg, args);
+            var ctx = Context.of(ext);
+            return ctx.compile(filename, raw).call(Context.of(ext), thisArg, args);
         }, micro);
     }
 }
diff --git a/src/java/me/topchetoeu/jscript/runtime/Extensions.java b/src/java/me/topchetoeu/jscript/runtime/Extensions.java
index d824790..3410e3e 100644
--- a/src/java/me/topchetoeu/jscript/runtime/Extensions.java
+++ b/src/java/me/topchetoeu/jscript/runtime/Extensions.java
@@ -2,7 +2,7 @@ package me.topchetoeu.jscript.runtime;
 
 import java.util.List;
 
-public interface Extensions {
+public interface Extensions extends Childable, Copyable {
     public static Extensions EMPTY = new Extensions() {
         @Override public <T> void add(Key<T> key, T obj) { }
         @Override public boolean remove(Key<?> key) { return false; }
@@ -47,6 +47,29 @@ public interface Extensions {
         }
     }
 
+    @Override
+    @SuppressWarnings("unchecked")
+    default Extensions copy() {
+        var res = new Environment();
+        for (var key : keys()) {
+            var val = get(key);
+            if (val instanceof Copyable) val = ((Copyable)val).copy();
+            res.add((Key<Object>)key, val);
+        }
+        return res;
+    }
+    @Override
+    @SuppressWarnings("unchecked")
+    default Extensions child() {
+        var res = new Environment();
+        for (var key : keys()) {
+            var val = get(key);
+            if (val instanceof Childable) val = ((Childable)val).child();
+            res.add((Key<Object>)key, val);
+        }
+        return res;
+    }
+
     public static Extensions wrap(Extensions ext) {
         if (ext == null) return EMPTY;
         else return ext;
diff --git a/src/java/me/topchetoeu/jscript/runtime/Frame.java b/src/java/me/topchetoeu/jscript/runtime/Frame.java
index d952596..7cdb025 100644
--- a/src/java/me/topchetoeu/jscript/runtime/Frame.java
+++ b/src/java/me/topchetoeu/jscript/runtime/Frame.java
@@ -294,13 +294,13 @@ public class Frame {
     public ObjectValue getValStackScope() {
         return new ObjectValue() {
             @Override
-            protected Object getField(Context ctx, Object key) {
-                var i = (int)Values.toNumber(ctx, key);
+            protected Object getField(Extensions ext, Object key) {
+                var i = (int)Values.toNumber(ext, key);
                 if (i < 0 || i >= stackPtr) return null;
                 else return stack[i];
             }
             @Override
-            protected boolean hasField(Context ctx, Object key) {
+            protected boolean hasField(Extensions ext, Object key) {
                 return true;
             }
             @Override
diff --git a/src/java/me/topchetoeu/jscript/runtime/InstructionRunner.java b/src/java/me/topchetoeu/jscript/runtime/InstructionRunner.java
index 2b94aa1..7a31109 100644
--- a/src/java/me/topchetoeu/jscript/runtime/InstructionRunner.java
+++ b/src/java/me/topchetoeu/jscript/runtime/InstructionRunner.java
@@ -5,6 +5,7 @@ import java.util.Collections;
 import me.topchetoeu.jscript.common.Instruction;
 import me.topchetoeu.jscript.common.Operation;
 import me.topchetoeu.jscript.runtime.exceptions.EngineException;
+import me.topchetoeu.jscript.runtime.scope.GlobalScope;
 import me.topchetoeu.jscript.runtime.scope.ValueVariable;
 import me.topchetoeu.jscript.runtime.values.ArrayValue;
 import me.topchetoeu.jscript.runtime.values.CodeFunction;
@@ -14,43 +15,43 @@ import me.topchetoeu.jscript.runtime.values.Symbol;
 import me.topchetoeu.jscript.runtime.values.Values;
 
 public class InstructionRunner {
-    private static Object execReturn(Context ctx, Instruction instr, Frame frame) {
+    private static Object execReturn(Extensions ext, Instruction instr, Frame frame) {
         return frame.pop();
     }
-    private static Object execThrow(Context ctx, Instruction instr, Frame frame) {
+    private static Object execThrow(Extensions ext, Instruction instr, Frame frame) {
         throw new EngineException(frame.pop());
     }
-    private static Object execThrowSyntax(Context ctx, Instruction instr, Frame frame) {
+    private static Object execThrowSyntax(Extensions ext, Instruction instr, Frame frame) {
         throw EngineException.ofSyntax((String)instr.get(0));
     }
 
-    private static Object execCall(Context ctx, Instruction instr, Frame frame) {
+    private static Object execCall(Extensions ext, Instruction instr, Frame frame) {
         var callArgs = frame.take(instr.get(0));
         var func = frame.pop();
         var thisArg = frame.pop();
 
-        frame.push(Values.call(ctx, func, thisArg, callArgs));
+        frame.push(Values.call(ext, func, thisArg, callArgs));
 
         frame.codePtr++;
         return Values.NO_RETURN;
     }
-    private static Object execCallNew(Context ctx, Instruction instr, Frame frame) {
+    private static Object execCallNew(Extensions ext, Instruction instr, Frame frame) {
         var callArgs = frame.take(instr.get(0));
         var funcObj = frame.pop();
 
-        frame.push(Values.callNew(ctx, funcObj, callArgs));
+        frame.push(Values.callNew(ext, funcObj, callArgs));
 
         frame.codePtr++;
         return Values.NO_RETURN;
     }
 
-    private static Object execMakeVar(Context ctx, Instruction instr, Frame frame) {
+    private static Object execMakeVar(Extensions ext, Instruction instr, Frame frame) {
         var name = (String)instr.get(0);
-        ctx.environment.global.define(ctx, name);
+        GlobalScope.get(ext).define(ext, name);
         frame.codePtr++;
         return Values.NO_RETURN;
     }
-    private static Object execDefProp(Context ctx, Instruction instr, Frame frame) {
+    private static Object execDefProp(Extensions ext, Instruction instr, Frame frame) {
         var setter = frame.pop();
         var getter = frame.pop();
         var name = frame.pop();
@@ -59,16 +60,16 @@ public class InstructionRunner {
         if (getter != null && !(getter instanceof FunctionValue)) throw EngineException.ofType("Getter must be a function or undefined.");
         if (setter != null && !(setter instanceof FunctionValue)) throw EngineException.ofType("Setter must be a function or undefined.");
         if (!(obj instanceof ObjectValue)) throw EngineException.ofType("Property apply target must be an object.");
-        ((ObjectValue)obj).defineProperty(ctx, name, (FunctionValue)getter, (FunctionValue)setter, false, false);
+        ((ObjectValue)obj).defineProperty(ext, name, (FunctionValue)getter, (FunctionValue)setter, false, false);
 
         frame.push(obj);
         frame.codePtr++;
         return Values.NO_RETURN;
     }
-    private static Object execKeys(Context ctx, Instruction instr, Frame frame) {
+    private static Object execKeys(Extensions ext, Instruction instr, Frame frame) {
         var val = frame.pop();
 
-        var members = Values.getMembers(ctx, val, false, false);
+        var members = Values.getMembers(ext, val, false, false);
         Collections.reverse(members);
 
         frame.push(null);
@@ -76,7 +77,7 @@ public class InstructionRunner {
         for (var el : members) {
             if (el instanceof Symbol) continue;
             var obj = new ObjectValue();
-            obj.defineProperty(ctx, "value", el);
+            obj.defineProperty(ext, "value", el);
             frame.push(obj);
         }
 
@@ -84,7 +85,7 @@ public class InstructionRunner {
         return Values.NO_RETURN;
     }
 
-    private static Object execTryStart(Context ctx, Instruction instr, Frame frame) {
+    private static Object execTryStart(Extensions ext, Instruction instr, Frame frame) {
         int start = frame.codePtr + 1;
         int catchStart = (int)instr.get(0);
         int finallyStart = (int)instr.get(1);
@@ -95,12 +96,12 @@ public class InstructionRunner {
         frame.codePtr++;
         return Values.NO_RETURN;
     }
-    private static Object execTryEnd(Context ctx, Instruction instr, Frame frame) {
+    private static Object execTryEnd(Extensions ext, Instruction instr, Frame frame) {
         frame.popTryFlag = true;
         return Values.NO_RETURN;
     }
 
-    private static Object execDup(Context ctx, Instruction instr, Frame frame) {
+    private static Object execDup(Extensions ext, Instruction instr, Frame frame) {
         int count = instr.get(0);
 
         for (var i = 0; i < count; i++) {
@@ -110,7 +111,7 @@ public class InstructionRunner {
         frame.codePtr++;
         return Values.NO_RETURN;
     }
-    private static Object execLoadValue(Context ctx, Instruction instr, Frame frame) {
+    private static Object execLoadValue(Extensions ext, Instruction instr, Frame frame) {
         switch (instr.type) {
             case PUSH_UNDEFINED: frame.push(null); break;
             case PUSH_NULL: frame.push(Values.NULL); break;
@@ -120,33 +121,33 @@ public class InstructionRunner {
         frame.codePtr++;
         return Values.NO_RETURN;
     }
-    private static Object execLoadVar(Context ctx, Instruction instr, Frame frame) {
+    private static Object execLoadVar(Extensions ext, Instruction instr, Frame frame) {
         var i = instr.get(0);
 
-        if (i instanceof String) frame.push(ctx.environment.global.get(ctx, (String)i));
-        else frame.push(frame.scope.get((int)i).get(ctx));
+        if (i instanceof String) frame.push(GlobalScope.get(ext).get(ext, (String)i));
+        else frame.push(frame.scope.get((int)i).get(ext));
 
         frame.codePtr++;
         return Values.NO_RETURN;
     }
-    private static Object execLoadObj(Context ctx, Instruction instr, Frame frame) {
+    private static Object execLoadObj(Extensions ext, Instruction instr, Frame frame) {
         frame.push(new ObjectValue());
         frame.codePtr++;
         return Values.NO_RETURN;
     }
-    private static Object execLoadGlob(Context ctx, Instruction instr, Frame frame) {
-        frame.push(ctx.environment.global.obj);
+    private static Object execLoadGlob(Extensions ext, Instruction instr, Frame frame) {
+        frame.push(GlobalScope.get(ext).obj);
         frame.codePtr++;
         return Values.NO_RETURN;
     }
-    private static Object execLoadArr(Context ctx, Instruction instr, Frame frame) {
+    private static Object execLoadArr(Extensions ext, Instruction instr, Frame frame) {
         var res = new ArrayValue();
         res.setSize(instr.get(0));
         frame.push(res);
         frame.codePtr++;
         return Values.NO_RETURN;
     }
-    private static Object execLoadFunc(Context ctx, Instruction instr, Frame frame) {
+    private static Object execLoadFunc(Extensions ext, Instruction instr, Frame frame) {
         int id = instr.get(0);
         var captures = new ValueVariable[instr.params.length - 1];
 
@@ -154,19 +155,19 @@ public class InstructionRunner {
             captures[i - 1] = frame.scope.get(instr.get(i));
         }
 
-        var func = new CodeFunction(ctx.environment, "", frame.function.body.children[id], captures);
+        var func = new CodeFunction(ext, "", frame.function.body.children[id], captures);
 
         frame.push(func);
 
         frame.codePtr++;
         return Values.NO_RETURN;
     }
-    private static Object execLoadMember(Context ctx, Instruction instr, Frame frame) {
+    private static Object execLoadMember(Extensions ext, Instruction instr, Frame frame) {
         var key = frame.pop();
         var obj = frame.pop();
 
         try {
-            frame.push(Values.getMember(ctx, obj, key));
+            frame.push(Values.getMember(ext, obj, key));
         }
         catch (IllegalArgumentException e) {
             throw EngineException.ofType(e.getMessage());
@@ -174,9 +175,9 @@ public class InstructionRunner {
         frame.codePtr++;
         return Values.NO_RETURN;
     }
-    private static Object execLoadRegEx(Context ctx, Instruction instr, Frame frame) {
-        if (ctx.hasNotNull(Environment.REGEX_CONSTR)) {
-            frame.push(Values.callNew(ctx, ctx.get(Environment.REGEX_CONSTR), instr.get(0), instr.get(1)));
+    private static Object execLoadRegEx(Extensions ext, Instruction instr, Frame frame) {
+        if (ext.hasNotNull(Environment.REGEX_CONSTR)) {
+            frame.push(Values.callNew(ext, ext.get(Environment.REGEX_CONSTR), instr.get(0), instr.get(1)));
         }
         else {
             throw EngineException.ofSyntax("Regex is not supported.");
@@ -185,43 +186,43 @@ public class InstructionRunner {
         return Values.NO_RETURN;
     }
 
-    private static Object execDiscard(Context ctx, Instruction instr, Frame frame) {
+    private static Object execDiscard(Extensions ext, Instruction instr, Frame frame) {
         frame.pop();
         frame.codePtr++;
         return Values.NO_RETURN;
     }
-    private static Object execStoreMember(Context ctx, Instruction instr, Frame frame) {
+    private static Object execStoreMember(Extensions ext, Instruction instr, Frame frame) {
         var val = frame.pop();
         var key = frame.pop();
         var obj = frame.pop();
 
-        if (!Values.setMember(ctx, obj, key, val)) throw EngineException.ofSyntax("Can't set member '" + key + "'.");
+        if (!Values.setMember(ext, obj, key, val)) throw EngineException.ofSyntax("Can't set member '" + key + "'.");
         if ((boolean)instr.get(0)) frame.push(val);
         frame.codePtr++;
         return Values.NO_RETURN;
     }
-    private static Object execStoreVar(Context ctx, Instruction instr, Frame frame) {
+    private static Object execStoreVar(Extensions ext, Instruction instr, Frame frame) {
         var val = (boolean)instr.get(1) ? frame.peek() : frame.pop();
         var i = instr.get(0);
 
-        if (i instanceof String) ctx.environment.global.set(ctx, (String)i, val);
-        else frame.scope.get((int)i).set(ctx, val);
+        if (i instanceof String) GlobalScope.get(ext).set(ext, (String)i, val);
+        else frame.scope.get((int)i).set(ext, val);
 
         frame.codePtr++;
         return Values.NO_RETURN;
     }
-    private static Object execStoreSelfFunc(Context ctx, Instruction instr, Frame frame) {
-        frame.scope.locals[(int)instr.get(0)].set(ctx, frame.function);
+    private static Object execStoreSelfFunc(Extensions ext, Instruction instr, Frame frame) {
+        frame.scope.locals[(int)instr.get(0)].set(ext, frame.function);
         frame.codePtr++;
         return Values.NO_RETURN;
     }
     
-    private static Object execJmp(Context ctx, Instruction instr, Frame frame) {
+    private static Object execJmp(Extensions ext, Instruction instr, Frame frame) {
         frame.codePtr += (int)instr.get(0);
         frame.jumpFlag = true;
         return Values.NO_RETURN;
     }
-    private static Object execJmpIf(Context ctx, Instruction instr, Frame frame) {
+    private static Object execJmpIf(Extensions ext, Instruction instr, Frame frame) {
         if (Values.toBoolean(frame.pop())) {
             frame.codePtr += (int)instr.get(0);
             frame.jumpFlag = true;
@@ -229,7 +230,7 @@ public class InstructionRunner {
         else frame.codePtr ++;
         return Values.NO_RETURN;
     }
-    private static Object execJmpIfNot(Context ctx, Instruction instr, Frame frame) {
+    private static Object execJmpIfNot(Extensions ext, Instruction instr, Frame frame) {
         if (Values.not(frame.pop())) {
             frame.codePtr += (int)instr.get(0);
             frame.jumpFlag = true;
@@ -238,13 +239,13 @@ public class InstructionRunner {
         return Values.NO_RETURN;
     }
 
-    private static Object execTypeof(Context ctx, Instruction instr, Frame frame) {
+    private static Object execTypeof(Extensions ext, Instruction instr, Frame frame) {
         String name = instr.get(0);
         Object obj;
 
         if (name != null) {
-            if (ctx.environment.global.has(ctx, name)) {
-                obj = ctx.environment.global.get(ctx, name);
+            if (GlobalScope.get(ext).has(ext, name)) {
+                obj = GlobalScope.get(ext).get(ext, name);
             }
             else obj = null;
         }
@@ -255,73 +256,73 @@ public class InstructionRunner {
         frame.codePtr++;
         return Values.NO_RETURN;
     }
-    private static Object execNop(Context ctx, Instruction instr, Frame frame) {
+    private static Object execNop(Extensions ext, Instruction instr, Frame frame) {
         frame.codePtr++;
         return Values.NO_RETURN;
     }
 
-    private static Object execDelete(Context ctx, Instruction instr, Frame frame) {
+    private static Object execDelete(Extensions ext, Instruction instr, Frame frame) {
         var key = frame.pop();
         var val = frame.pop();
 
-        if (!Values.deleteMember(ctx, val, key)) throw EngineException.ofSyntax("Can't delete member '" + key + "'.");
+        if (!Values.deleteMember(ext, val, key)) throw EngineException.ofSyntax("Can't delete member '" + key + "'.");
         frame.codePtr++;
         return Values.NO_RETURN;
     }
 
-    private static Object execOperation(Context ctx, Instruction instr, Frame frame) {
+    private static Object execOperation(Extensions ext, Instruction instr, Frame frame) {
         Operation op = instr.get(0);
         var args = new Object[op.operands];
 
         for (var i = op.operands - 1; i >= 0; i--) args[i] = frame.pop();
 
-        frame.push(Values.operation(ctx, op, args));
+        frame.push(Values.operation(ext, op, args));
         frame.codePtr++;
         return Values.NO_RETURN;
     }
 
-    public static Object exec(Context ctx, Instruction instr, Frame frame) {
+    public static Object exec(Extensions ext, Instruction instr, Frame frame) {
         switch (instr.type) {
-            case NOP: return execNop(ctx, instr, frame);
-            case RETURN: return execReturn(ctx, instr, frame);
-            case THROW: return execThrow(ctx, instr, frame);
-            case THROW_SYNTAX: return execThrowSyntax(ctx, instr, frame);
-            case CALL: return execCall(ctx, instr, frame);
-            case CALL_NEW: return execCallNew(ctx, instr, frame);
-            case TRY_START: return execTryStart(ctx, instr, frame);
-            case TRY_END: return execTryEnd(ctx, instr, frame);
+            case NOP: return execNop(ext, instr, frame);
+            case RETURN: return execReturn(ext, instr, frame);
+            case THROW: return execThrow(ext, instr, frame);
+            case THROW_SYNTAX: return execThrowSyntax(ext, instr, frame);
+            case CALL: return execCall(ext, instr, frame);
+            case CALL_NEW: return execCallNew(ext, instr, frame);
+            case TRY_START: return execTryStart(ext, instr, frame);
+            case TRY_END: return execTryEnd(ext, instr, frame);
 
-            case DUP: return execDup(ctx, instr, frame);
+            case DUP: return execDup(ext, instr, frame);
             case PUSH_UNDEFINED:
             case PUSH_NULL:
             case PUSH_STRING:
             case PUSH_NUMBER:
             case PUSH_BOOL:
-                return execLoadValue(ctx, instr, frame);
-            case LOAD_VAR: return execLoadVar(ctx, instr, frame);
-            case LOAD_OBJ: return execLoadObj(ctx, instr, frame);
-            case LOAD_ARR: return execLoadArr(ctx, instr, frame);
-            case LOAD_FUNC: return execLoadFunc(ctx, instr, frame);
-            case LOAD_MEMBER: return execLoadMember(ctx, instr, frame);
-            case LOAD_REGEX: return execLoadRegEx(ctx, instr, frame);
-            case LOAD_GLOB: return execLoadGlob(ctx, instr, frame);
+                return execLoadValue(ext, instr, frame);
+            case LOAD_VAR: return execLoadVar(ext, instr, frame);
+            case LOAD_OBJ: return execLoadObj(ext, instr, frame);
+            case LOAD_ARR: return execLoadArr(ext, instr, frame);
+            case LOAD_FUNC: return execLoadFunc(ext, instr, frame);
+            case LOAD_MEMBER: return execLoadMember(ext, instr, frame);
+            case LOAD_REGEX: return execLoadRegEx(ext, instr, frame);
+            case LOAD_GLOB: return execLoadGlob(ext, instr, frame);
 
-            case DISCARD: return execDiscard(ctx, instr, frame);
-            case STORE_MEMBER: return execStoreMember(ctx, instr, frame);
-            case STORE_VAR: return execStoreVar(ctx, instr, frame);
-            case STORE_SELF_FUNC: return execStoreSelfFunc(ctx, instr, frame);
-            case MAKE_VAR: return execMakeVar(ctx, instr, frame);
+            case DISCARD: return execDiscard(ext, instr, frame);
+            case STORE_MEMBER: return execStoreMember(ext, instr, frame);
+            case STORE_VAR: return execStoreVar(ext, instr, frame);
+            case STORE_SELF_FUNC: return execStoreSelfFunc(ext, instr, frame);
+            case MAKE_VAR: return execMakeVar(ext, instr, frame);
 
-            case KEYS: return execKeys(ctx, instr, frame);
-            case DEF_PROP: return execDefProp(ctx, instr, frame);
-            case TYPEOF: return execTypeof(ctx, instr, frame);
-            case DELETE: return execDelete(ctx, instr, frame);
+            case KEYS: return execKeys(ext, instr, frame);
+            case DEF_PROP: return execDefProp(ext, instr, frame);
+            case TYPEOF: return execTypeof(ext, instr, frame);
+            case DELETE: return execDelete(ext, instr, frame);
 
-            case JMP: return execJmp(ctx, instr, frame);
-            case JMP_IF: return execJmpIf(ctx, instr, frame);
-            case JMP_IFN: return execJmpIfNot(ctx, instr, frame);
+            case JMP: return execJmp(ext, instr, frame);
+            case JMP_IF: return execJmpIf(ext, instr, frame);
+            case JMP_IFN: return execJmpIfNot(ext, instr, frame);
 
-            case OPERATION: return execOperation(ctx, instr, frame);
+            case OPERATION: return execOperation(ext, instr, frame);
 
             default: throw EngineException.ofSyntax("Invalid instruction " + instr.type.name() + ".");
         }
diff --git a/src/java/me/topchetoeu/jscript/runtime/exceptions/EngineException.java b/src/java/me/topchetoeu/jscript/runtime/exceptions/EngineException.java
index 787dbee..20d19bc 100644
--- a/src/java/me/topchetoeu/jscript/runtime/exceptions/EngineException.java
+++ b/src/java/me/topchetoeu/jscript/runtime/exceptions/EngineException.java
@@ -6,6 +6,7 @@ import java.util.List;
 import me.topchetoeu.jscript.common.Location;
 import me.topchetoeu.jscript.runtime.Context;
 import me.topchetoeu.jscript.runtime.Environment;
+import me.topchetoeu.jscript.runtime.Extensions;
 import me.topchetoeu.jscript.runtime.values.ObjectValue;
 import me.topchetoeu.jscript.runtime.values.Values;
 import me.topchetoeu.jscript.runtime.values.ObjectValue.PlaceholderProto;
@@ -14,10 +15,10 @@ public class EngineException extends RuntimeException {
     public static class StackElement {
         public final Location location;
         public final String name;
-        public final Context ctx;
+        public final Extensions ext;
 
         public boolean visible() {
-            return ctx == null || !ctx.get(Environment.HIDE_STACK, false);
+            return ext == null || !ext.get(Environment.HIDE_STACK, false);
         }
         public String toString() {
             var res = "";
@@ -29,12 +30,13 @@ public class EngineException extends RuntimeException {
             return res.trim();
         }
 
-        public StackElement(Context ctx, Location location, String name) {
+        public StackElement(Extensions ext, Location location, String name) {
             if (name != null) name = name.trim();
             if (name.equals("")) name = null;
 
-            if (ctx == null) this.ctx = null;
-            else this.ctx = new Context(ctx.environment);
+            if (ext == null) this.ext = null;
+            else this.ext = Context.clean(ext);
+
             this.location = location;
             this.name = name;
         }
@@ -42,13 +44,13 @@ public class EngineException extends RuntimeException {
 
     public final Object value;
     public EngineException cause;
-    public Environment env = null;
+    public Extensions ext = null;
     public final List<StackElement> stackTrace = new ArrayList<>();
 
-    public EngineException add(Context ctx, String name, Location location) {
-        var el = new StackElement(ctx, location, name);
+    public EngineException add(Extensions ext, String name, Location location) {
+        var el = new StackElement(ext, location, name);
         if (el.name == null && el.location == null) return this;
-        setCtx(ctx);
+        setExtensions(ext);
         stackTrace.add(el);
         return this;
     }
@@ -56,15 +58,15 @@ public class EngineException extends RuntimeException {
         this.cause = cause;
         return this;
     }
-    public EngineException setCtx(Context ctx) {
-        if (this.env == null) this.env = ctx.environment;
+    public EngineException setExtensions(Extensions ext) {
+        if (this.ext == null) this.ext = Context.clean(ext);
         return this;
     }
 
-    public String toString(Context ctx) {
+    public String toString(Extensions ext) {
         var ss = new StringBuilder();
         try {
-            ss.append(Values.toString(ctx, value)).append('\n');
+            ss.append(Values.toString(ext, value)).append('\n');
         }
         catch (EngineException e) {
             ss.append("[Error while stringifying]\n");
@@ -72,7 +74,7 @@ public class EngineException extends RuntimeException {
         for (var line : stackTrace) {
             if (line.visible()) ss.append("    ").append(line.toString()).append("\n");
         }
-        if (cause != null) ss.append("Caused by ").append(cause.toString(ctx)).append('\n');
+        if (cause != null) ss.append("Caused by ").append(cause.toString(ext)).append('\n');
         ss.deleteCharAt(ss.length() - 1);
         return ss.toString();
     }
diff --git a/src/java/me/topchetoeu/jscript/runtime/scope/GlobalScope.java b/src/java/me/topchetoeu/jscript/runtime/scope/GlobalScope.java
index 161a802..d68d24f 100644
--- a/src/java/me/topchetoeu/jscript/runtime/scope/GlobalScope.java
+++ b/src/java/me/topchetoeu/jscript/runtime/scope/GlobalScope.java
@@ -3,7 +3,8 @@ package me.topchetoeu.jscript.runtime.scope;
 import java.util.HashSet;
 import java.util.Set;
 
-import me.topchetoeu.jscript.runtime.Context;
+import me.topchetoeu.jscript.runtime.Extensions;
+import me.topchetoeu.jscript.runtime.Key;
 import me.topchetoeu.jscript.runtime.exceptions.EngineException;
 import me.topchetoeu.jscript.runtime.values.FunctionValue;
 import me.topchetoeu.jscript.runtime.values.NativeFunction;
@@ -11,10 +12,12 @@ import me.topchetoeu.jscript.runtime.values.ObjectValue;
 import me.topchetoeu.jscript.runtime.values.Values;
 
 public class GlobalScope {
+    public static final Key<GlobalScope> KEY = new Key<>();
+
     public final ObjectValue obj;
 
-    public boolean has(Context ctx, String name) {
-        return Values.hasMember(null, obj, name, false);
+    public boolean has(Extensions ext, String name) {
+        return Values.hasMember(ext, obj, name, false);
     }
 
     public GlobalScope globalChild() {
@@ -23,35 +26,35 @@ public class GlobalScope {
         return new GlobalScope(obj);
     }
 
-    public Object define(Context ctx, String name) {
-        if (Values.hasMember(ctx, obj, name, false)) return name;
-        obj.defineProperty(ctx, name, null);
+    public Object define(Extensions ext, String name) {
+        if (Values.hasMember(ext, obj, name, false)) return name;
+        obj.defineProperty(ext, name, null);
         return name;
     }
-    public void define(Context ctx, String name, Variable val) {
-        obj.defineProperty(ctx, name,
+    public void define(Extensions ext, String name, Variable val) {
+        obj.defineProperty(ext, name,
             new NativeFunction("get " + name, args -> val.get(args.ctx)),
             new NativeFunction("set " + name, args -> { val.set(args.ctx, args.get(0)); return null; }),
             true, true
         );
     }
-    public void define(Context ctx, String name, boolean readonly, Object val) {
-        obj.defineProperty(ctx, name, val, readonly, true, true);
+    public void define(Extensions ext, String name, boolean readonly, Object val) {
+        obj.defineProperty(ext, name, val, readonly, true, true);
     }
-    public void define(Context ctx, String ...names) {
-        for (var n : names) define(ctx, n);
+    public void define(Extensions ext, String ...names) {
+        for (var n : names) define(ext, n);
     }
-    public void define(Context ctx, boolean readonly, FunctionValue val) {
-        define(ctx, val.name, readonly, val);
+    public void define(Extensions ext, boolean readonly, FunctionValue val) {
+        define(ext, val.name, readonly, val);
     }
 
-    public Object get(Context ctx, String name) {
-        if (!Values.hasMember(ctx, obj, name, false)) throw EngineException.ofSyntax("The variable '" + name + "' doesn't exist.");
-        else return Values.getMember(ctx, obj, name);
+    public Object get(Extensions ext, String name) {
+        if (!Values.hasMember(ext, obj, name, false)) throw EngineException.ofSyntax("The variable '" + name + "' doesn't exist.");
+        else return Values.getMember(ext, obj, name);
     }
-    public void set(Context ctx, String name, Object val) {
-        if (!Values.hasMember(ctx, obj, name, false)) throw EngineException.ofSyntax("The variable '" + name + "' doesn't exist.");
-        if (!Values.setMember(ctx, obj, name, val)) throw EngineException.ofSyntax("The global '" + name + "' is readonly.");
+    public void set(Extensions ext, String name, Object val) {
+        if (!Values.hasMember(ext, obj, name, false)) throw EngineException.ofSyntax("The variable '" + name + "' doesn't exist.");
+        if (!Values.setMember(ext, obj, name, val)) throw EngineException.ofSyntax("The global '" + name + "' is readonly.");
     }
 
     public Set<String> keys() {
@@ -70,4 +73,9 @@ public class GlobalScope {
     public GlobalScope(ObjectValue val) {
         this.obj = val;
     }
+
+    public static GlobalScope get(Extensions ext) {
+        if (ext.has(KEY)) return ext.get(KEY);
+        else return new GlobalScope();
+    }
 }
diff --git a/src/java/me/topchetoeu/jscript/runtime/scope/ValueVariable.java b/src/java/me/topchetoeu/jscript/runtime/scope/ValueVariable.java
index 892e01e..eb988b3 100644
--- a/src/java/me/topchetoeu/jscript/runtime/scope/ValueVariable.java
+++ b/src/java/me/topchetoeu/jscript/runtime/scope/ValueVariable.java
@@ -1,6 +1,6 @@
 package me.topchetoeu.jscript.runtime.scope;
 
-import me.topchetoeu.jscript.runtime.Context;
+import me.topchetoeu.jscript.runtime.Extensions;
 import me.topchetoeu.jscript.runtime.values.Values;
 
 public class ValueVariable implements Variable {
@@ -11,14 +11,14 @@ public class ValueVariable implements Variable {
     public boolean readonly() { return readonly; }
 
     @Override
-    public Object get(Context ctx) {
+    public Object get(Extensions ext) {
         return value;
     }
 
     @Override
-    public void set(Context ctx, Object val) {
+    public void set(Extensions ext, Object val) {
         if (readonly) return;
-        this.value = Values.normalize(ctx, val);
+        this.value = Values.normalize(ext, val);
     }
     
     public ValueVariable(boolean readonly, Object val) {
diff --git a/src/java/me/topchetoeu/jscript/runtime/scope/Variable.java b/src/java/me/topchetoeu/jscript/runtime/scope/Variable.java
index ed99895..6d00d80 100644
--- a/src/java/me/topchetoeu/jscript/runtime/scope/Variable.java
+++ b/src/java/me/topchetoeu/jscript/runtime/scope/Variable.java
@@ -1,9 +1,9 @@
 package me.topchetoeu.jscript.runtime.scope;
 
-import me.topchetoeu.jscript.runtime.Context;
+import me.topchetoeu.jscript.runtime.Extensions;
 
 public interface Variable {
-    Object get(Context ctx);
+    Object get(Extensions ext);
     default boolean readonly() { return true; }
-    default void set(Context ctx, Object val) { }
+    default void set(Extensions ext, Object val) { }
 }
diff --git a/src/java/me/topchetoeu/jscript/runtime/values/ArrayValue.java b/src/java/me/topchetoeu/jscript/runtime/values/ArrayValue.java
index 02c7947..a13c014 100644
--- a/src/java/me/topchetoeu/jscript/runtime/values/ArrayValue.java
+++ b/src/java/me/topchetoeu/jscript/runtime/values/ArrayValue.java
@@ -6,7 +6,7 @@ import java.util.Comparator;
 import java.util.Iterator;
 import java.util.List;
 
-import me.topchetoeu.jscript.runtime.Context;
+import me.topchetoeu.jscript.runtime.Extensions;
 
 // TODO: Make methods generic
 public class ArrayValue extends ObjectValue implements Iterable<Object> {
@@ -41,12 +41,12 @@ public class ArrayValue extends ObjectValue implements Iterable<Object> {
         if (res == UNDEFINED) return null;
         else return res;
     }
-    public void set(Context ctx, int i, Object val) {
+    public void set(Extensions ext, int i, Object val) {
         if (i < 0) return;
 
         values = alloc(i);
 
-        val = Values.normalize(ctx, val);
+        val = Values.normalize(ext, val);
         if (val == null) val = UNDEFINED;
         values[i] = val;
         if (i >= size) size = i + 1;
@@ -99,9 +99,9 @@ public class ArrayValue extends ObjectValue implements Iterable<Object> {
         }
     }
 
-    public void copyFrom(Context ctx, Object[] arr, int sourceStart, int destStart, int count) {
+    public void copyFrom(Extensions ext, Object[] arr, int sourceStart, int destStart, int count) {
         for (var i = 0; i < count; i++) {
-            set(ctx, i + destStart, arr[i + sourceStart]);
+            set(ext, i + destStart, arr[i + sourceStart]);
         }
     }
 
@@ -131,7 +131,7 @@ public class ArrayValue extends ObjectValue implements Iterable<Object> {
     }
 
     @Override
-    protected Object getField(Context ctx, Object key) {
+    protected Object getField(Extensions ext, Object key) {
         if (key instanceof Number) {
             var i = ((Number)key).doubleValue();
             if (i >= 0 && i - Math.floor(i) == 0) {
@@ -139,22 +139,22 @@ public class ArrayValue extends ObjectValue implements Iterable<Object> {
             }
         }
 
-        return super.getField(ctx, key);
+        return super.getField(ext, key);
     }
     @Override
-    protected boolean setField(Context ctx, Object key, Object val) {
+    protected boolean setField(Extensions ext, Object key, Object val) {
         if (key instanceof Number) {
             var i = Values.number(key);
             if (i >= 0 && i - Math.floor(i) == 0) {
-                set(ctx, (int)i, val);
+                set(ext, (int)i, val);
                 return true;
             }
         }
 
-        return super.setField(ctx, key, val);
+        return super.setField(ext, key, val);
     }
     @Override
-    protected boolean hasField(Context ctx, Object key) {
+    protected boolean hasField(Extensions ext, Object key) {
         if (key instanceof Number) {
             var i = Values.number(key);
             if (i >= 0 && i - Math.floor(i) == 0) {
@@ -162,10 +162,10 @@ public class ArrayValue extends ObjectValue implements Iterable<Object> {
             }
         }
 
-        return super.hasField(ctx, key);
+        return super.hasField(ext, key);
     }
     @Override
-    protected void deleteField(Context ctx, Object key) {
+    protected void deleteField(Extensions ext, Object key) {
         if (key instanceof Number) {
             var i = Values.number(key);
             if (i >= 0 && i - Math.floor(i) == 0) {
@@ -174,7 +174,7 @@ public class ArrayValue extends ObjectValue implements Iterable<Object> {
             }
         }
 
-        super.deleteField(ctx, key);
+        super.deleteField(ext, key);
     }
 
     @Override
@@ -213,15 +213,15 @@ public class ArrayValue extends ObjectValue implements Iterable<Object> {
         values = new Object[cap];
         size = 0;
     }
-    public ArrayValue(Context ctx, Object ...values) {
+    public ArrayValue(Extensions ext, Object ...values) {
         this();
         this.values = new Object[values.length];
         size = values.length;
 
-        for (var i = 0; i < size; i++) this.values[i] = Values.normalize(ctx, values[i]);
+        for (var i = 0; i < size; i++) this.values[i] = Values.normalize(ext, values[i]);
     }
 
-    public static ArrayValue of(Context ctx, Collection<?> values) {
-        return new ArrayValue(ctx, values.toArray(Object[]::new));
+    public static ArrayValue of(Extensions ext, Collection<?> values) {
+        return new ArrayValue(ext, values.toArray(Object[]::new));
     }
 }
diff --git a/src/java/me/topchetoeu/jscript/runtime/values/CodeFunction.java b/src/java/me/topchetoeu/jscript/runtime/values/CodeFunction.java
index 0843c8f..607376b 100644
--- a/src/java/me/topchetoeu/jscript/runtime/values/CodeFunction.java
+++ b/src/java/me/topchetoeu/jscript/runtime/values/CodeFunction.java
@@ -2,14 +2,14 @@ package me.topchetoeu.jscript.runtime.values;
 
 import me.topchetoeu.jscript.common.FunctionBody;
 import me.topchetoeu.jscript.runtime.Context;
-import me.topchetoeu.jscript.runtime.Environment;
+import me.topchetoeu.jscript.runtime.Extensions;
 import me.topchetoeu.jscript.runtime.Frame;
 import me.topchetoeu.jscript.runtime.scope.ValueVariable;
 
 public class CodeFunction extends FunctionValue {
     public final FunctionBody body;
     public final ValueVariable[] captures;
-    public Environment environment;
+    public Extensions extensions;
 
     // public Location loc() {
     //     for (var instr : body.instructions) {
@@ -25,8 +25,8 @@ public class CodeFunction extends FunctionValue {
     // }
 
     @Override
-    public Object call(Context ctx, Object thisArg, Object ...args) {
-        var frame = new Frame(ctx, thisArg, args, this);
+    public Object call(Extensions ext, Object thisArg, Object ...args) {
+        var frame = new Frame(Context.of(ext), thisArg, args, this);
 
         frame.onPush();
 
@@ -41,10 +41,10 @@ public class CodeFunction extends FunctionValue {
         }
     }
 
-    public CodeFunction(Environment environment, String name, FunctionBody body, ValueVariable[] captures) {
+    public CodeFunction(Extensions extensions, String name, FunctionBody body, ValueVariable[] captures) {
         super(name, body.argsN);
         this.captures = captures;
-        this.environment = environment;
+        this.extensions = extensions;
         this.body = body;
     }
 }
diff --git a/src/java/me/topchetoeu/jscript/runtime/values/FunctionValue.java b/src/java/me/topchetoeu/jscript/runtime/values/FunctionValue.java
index 9b54aaa..ced4c9a 100644
--- a/src/java/me/topchetoeu/jscript/runtime/values/FunctionValue.java
+++ b/src/java/me/topchetoeu/jscript/runtime/values/FunctionValue.java
@@ -2,7 +2,7 @@ package me.topchetoeu.jscript.runtime.values;
 
 import java.util.List;
 
-import me.topchetoeu.jscript.runtime.Context;
+import me.topchetoeu.jscript.runtime.Extensions;
 
 public abstract class FunctionValue extends ObjectValue {
     public String name = "";
@@ -13,29 +13,29 @@ public abstract class FunctionValue extends ObjectValue {
         return String.format("function %s(...)", name);
     }
 
-    public abstract Object call(Context ctx, Object thisArg, Object ...args);
-    public Object call(Context ctx) {
-        return call(ctx, null);
+    public abstract Object call(Extensions ext, Object thisArg, Object ...args);
+    public Object call(Extensions ext) {
+        return call(ext, null);
     }
 
     @Override
-    protected Object getField(Context ctx, Object key) {
+    protected Object getField(Extensions ext, Object key) {
         if ("name".equals(key)) return name;
         if ("length".equals(key)) return length;
-        return super.getField(ctx, key);
+        return super.getField(ext, key);
     }
     @Override
-    protected boolean setField(Context ctx, Object key, Object val) {
-        if ("name".equals(key)) name = Values.toString(ctx, val);
-        else if ("length".equals(key)) length = (int)Values.toNumber(ctx, val);
-        else return super.setField(ctx, key, val);
+    protected boolean setField(Extensions ext, Object key, Object val) {
+        if ("name".equals(key)) name = Values.toString(ext, val);
+        else if ("length".equals(key)) length = (int)Values.toNumber(ext, val);
+        else return super.setField(ext, key, val);
         return true;
     }
     @Override
-    protected boolean hasField(Context ctx, Object key) {
+    protected boolean hasField(Extensions ext, Object key) {
         if ("name".equals(key)) return true;
         if ("length".equals(key)) return true;
-        return super.hasField(ctx, key);
+        return super.hasField(ext, key);
     }
 
     @Override
diff --git a/src/java/me/topchetoeu/jscript/runtime/values/NativeFunction.java b/src/java/me/topchetoeu/jscript/runtime/values/NativeFunction.java
index cbc3f58..e1145f9 100644
--- a/src/java/me/topchetoeu/jscript/runtime/values/NativeFunction.java
+++ b/src/java/me/topchetoeu/jscript/runtime/values/NativeFunction.java
@@ -1,6 +1,7 @@
 package me.topchetoeu.jscript.runtime.values;
 
 import me.topchetoeu.jscript.runtime.Context;
+import me.topchetoeu.jscript.runtime.Extensions;
 import me.topchetoeu.jscript.utils.interop.Arguments;
 
 public class NativeFunction extends FunctionValue {
@@ -11,8 +12,8 @@ public class NativeFunction extends FunctionValue {
     public final NativeFunctionRunner action;
 
     @Override
-    public Object call(Context ctx, Object thisArg, Object ...args) {
-        return action.run(new Arguments(ctx, thisArg, args));
+    public Object call(Extensions ext, Object thisArg, Object ...args) {
+        return action.run(new Arguments(Context.of(ext), thisArg, args));
     }
 
     public NativeFunction(String name, NativeFunctionRunner action) {
diff --git a/src/java/me/topchetoeu/jscript/runtime/values/NativeWrapper.java b/src/java/me/topchetoeu/jscript/runtime/values/NativeWrapper.java
index 3bb7e9f..85f8a11 100644
--- a/src/java/me/topchetoeu/jscript/runtime/values/NativeWrapper.java
+++ b/src/java/me/topchetoeu/jscript/runtime/values/NativeWrapper.java
@@ -2,9 +2,9 @@ package me.topchetoeu.jscript.runtime.values;
 
 import java.util.WeakHashMap;
 
-import me.topchetoeu.jscript.runtime.Context;
 import me.topchetoeu.jscript.runtime.Extensions;
 import me.topchetoeu.jscript.runtime.Key;
+import me.topchetoeu.jscript.utils.interop.NativeWrapperProvider;
 
 public class NativeWrapper extends ObjectValue {
     private static final Key<WeakHashMap<Object, NativeWrapper>> WRAPPERS = new Key<>();
@@ -12,13 +12,13 @@ public class NativeWrapper extends ObjectValue {
     public final Object wrapped;
 
     @Override
-    public ObjectValue getPrototype(Context ctx) {
-        if (ctx.environment != null && prototype == NATIVE_PROTO) {
+    public ObjectValue getPrototype(Extensions ext) {
+        if (ext != null && prototype == NATIVE_PROTO) {
             var clazz = wrapped.getClass();
-            var res = ctx.environment.wrappers.getProto(clazz);
+            var res = NativeWrapperProvider.get(ext).getProto(clazz);
             if (res != null) return res;
         }
-        return super.getPrototype(ctx);
+        return super.getPrototype(ext);
     }
 
     @Override
@@ -40,9 +40,14 @@ public class NativeWrapper extends ObjectValue {
     }
 
     public static NativeWrapper of(Extensions exts, Object wrapped) {
-        var wrappers = exts == null ? null : exts.get(WRAPPERS);
+        if (exts == null) return new NativeWrapper(wrapped);
+        var wrappers = exts.get(WRAPPERS);
+
+        if (wrappers == null) {
+            wrappers = new WeakHashMap<>();
+            exts.add(WRAPPERS, wrappers);
+        }
 
-        if (wrappers == null) return new NativeWrapper(wrapped);
         if (wrappers.containsKey(wrapped)) return wrappers.get(wrapped);
 
         var res = new NativeWrapper(wrapped);
diff --git a/src/java/me/topchetoeu/jscript/runtime/values/ObjectValue.java b/src/java/me/topchetoeu/jscript/runtime/values/ObjectValue.java
index 81f4ea3..c1e0768 100644
--- a/src/java/me/topchetoeu/jscript/runtime/values/ObjectValue.java
+++ b/src/java/me/topchetoeu/jscript/runtime/values/ObjectValue.java
@@ -6,8 +6,8 @@ import java.util.LinkedHashSet;
 import java.util.List;
 import java.util.Map;
 
-import me.topchetoeu.jscript.runtime.Context;
 import me.topchetoeu.jscript.runtime.Environment;
+import me.topchetoeu.jscript.runtime.Extensions;
 
 public class ObjectValue {
     public static enum PlaceholderProto {
@@ -54,10 +54,10 @@ public class ObjectValue {
     public LinkedHashSet<Object> nonConfigurableSet = new LinkedHashSet<>();
     public LinkedHashSet<Object> nonEnumerableSet = new LinkedHashSet<>();
 
-    private Property getProperty(Context ctx, Object key) {
+    private Property getProperty(Extensions ext, Object key) {
         if (properties.containsKey(key)) return properties.get(key);
-        var proto = getPrototype(ctx);
-        if (proto != null) return proto.getProperty(ctx, key);
+        var proto = getPrototype(ext);
+        if (proto != null) return proto.getProperty(ext, key);
         else return null;
     }
 
@@ -86,8 +86,8 @@ public class ObjectValue {
         state = State.FROZEN;
     }
 
-    public final boolean defineProperty(Context ctx, Object key, Object val, boolean writable, boolean configurable, boolean enumerable) {
-        key = Values.normalize(ctx, key); val = Values.normalize(ctx, val);
+    public final boolean defineProperty(Extensions ext, Object key, Object val, boolean writable, boolean configurable, boolean enumerable) {
+        key = Values.normalize(ext, key); val = Values.normalize(ext, val);
         boolean reconfigured = 
             writable != memberWritable(key) ||
             configurable != memberConfigurable(key) ||
@@ -125,11 +125,11 @@ public class ObjectValue {
         values.put(key, val);
         return true;
     }
-    public final boolean defineProperty(Context ctx, Object key, Object val) {
-        return defineProperty(ctx, key, val, true, true, true);
+    public final boolean defineProperty(Extensions ext, Object key, Object val) {
+        return defineProperty(ext, key, val, true, true, true);
     }
-    public final boolean defineProperty(Context ctx, Object key, FunctionValue getter, FunctionValue setter, boolean configurable, boolean enumerable) {
-        key = Values.normalize(ctx, key);
+    public final boolean defineProperty(Extensions ext, Object key, FunctionValue getter, FunctionValue setter, boolean configurable, boolean enumerable) {
+        key = Values.normalize(ext, key);
         if (
             properties.containsKey(key) &&
             properties.get(key).getter == getter &&
@@ -152,17 +152,17 @@ public class ObjectValue {
         return true;
     }
 
-    public ObjectValue getPrototype(Context ctx) {
+    public ObjectValue getPrototype(Extensions ext) {
         if (prototype instanceof ObjectValue || prototype == null) return (ObjectValue)prototype;
 
         try {
-            if (prototype == ARR_PROTO) return ctx.get(Environment.ARRAY_PROTO);
-            if (prototype == FUNC_PROTO) return ctx.get(Environment.FUNCTION_PROTO);
-            if (prototype == ERR_PROTO) return ctx.get(Environment.ERROR_PROTO);
-            if (prototype == RANGE_ERR_PROTO) return ctx.get(Environment.RANGE_ERR_PROTO);
-            if (prototype == SYNTAX_ERR_PROTO) return ctx.get(Environment.SYNTAX_ERR_PROTO);
-            if (prototype == TYPE_ERR_PROTO) return ctx.get(Environment.TYPE_ERR_PROTO);
-            return ctx.get(Environment.OBJECT_PROTO);
+            if (prototype == ARR_PROTO) return ext.get(Environment.ARRAY_PROTO);
+            if (prototype == FUNC_PROTO) return ext.get(Environment.FUNCTION_PROTO);
+            if (prototype == ERR_PROTO) return ext.get(Environment.ERROR_PROTO);
+            if (prototype == RANGE_ERR_PROTO) return ext.get(Environment.RANGE_ERR_PROTO);
+            if (prototype == SYNTAX_ERR_PROTO) return ext.get(Environment.SYNTAX_ERR_PROTO);
+            if (prototype == TYPE_ERR_PROTO) return ext.get(Environment.TYPE_ERR_PROTO);
+            return ext.get(Environment.OBJECT_PROTO);
         }
         catch (NullPointerException e) { return null; }
     }
@@ -185,10 +185,10 @@ public class ObjectValue {
      * A method, used to get the value of a field. If a property is bound to
      * this key, but not a field, this method should return null.
      */
-    protected Object getField(Context ctx, Object key) {
+    protected Object getField(Extensions ext, Object key) {
         if (values.containsKey(key)) return values.get(key);
-        var proto = getPrototype(ctx);
-        if (proto != null) return proto.getField(ctx, key);
+        var proto = getPrototype(ext);
+        if (proto != null) return proto.getField(ext, key);
         else return null;
     }
     /**
@@ -196,9 +196,9 @@ public class ObjectValue {
      * bound to this key, a new field should be created with the given value
      * @return Whether or not the operation was successful
      */
-    protected boolean setField(Context ctx, Object key, Object val) {
+    protected boolean setField(Extensions ext, Object key, Object val) {
         if (val instanceof FunctionValue && ((FunctionValue)val).name.equals("")) {
-            ((FunctionValue)val).name = Values.toString(ctx, key);
+            ((FunctionValue)val).name = Values.toString(ext, key);
         }
 
         values.put(key, val);
@@ -207,40 +207,40 @@ public class ObjectValue {
     /**
      * Deletes the field bound to the given key.
      */
-    protected void deleteField(Context ctx, Object key) {
+    protected void deleteField(Extensions ext, Object key) {
         values.remove(key);
     }
     /**
      * Returns whether or not there is a field bound to the given key.
      * This must ignore properties
      */
-    protected boolean hasField(Context ctx, Object key) {
+    protected boolean hasField(Extensions ext, Object key) {
         return values.containsKey(key);
     }
 
-    public final Object getMember(Context ctx, Object key, Object thisArg) {
-        key = Values.normalize(ctx, key);
+    public final Object getMember(Extensions ext, Object key, Object thisArg) {
+        key = Values.normalize(ext, key);
 
         if ("__proto__".equals(key)) {
-            var res = getPrototype(ctx);
+            var res = getPrototype(ext);
             return res == null ? Values.NULL : res;
         }
 
-        var prop = getProperty(ctx, key);
+        var prop = getProperty(ext, key);
 
         if (prop != null) {
             if (prop.getter == null) return null;
-            else return prop.getter.call(ctx, Values.normalize(ctx, thisArg));
+            else return prop.getter.call(ext, Values.normalize(ext, thisArg));
         }
-        else return getField(ctx, key);
+        else return getField(ext, key);
     }
-    public final boolean setMember(Context ctx, Object key, Object val, Object thisArg, boolean onlyProps) {
-        key = Values.normalize(ctx, key); val = Values.normalize(ctx, val);
+    public final boolean setMember(Extensions ext, Object key, Object val, Object thisArg, boolean onlyProps) {
+        key = Values.normalize(ext, key); val = Values.normalize(ext, val);
 
-        var prop = getProperty(ctx, key);
+        var prop = getProperty(ext, key);
         if (prop != null) {
             if (prop.setter == null) return false;
-            prop.setter.call(ctx, Values.normalize(ctx, thisArg), val);
+            prop.setter.call(ext, Values.normalize(ext, thisArg), val);
             return true;
         }
         else if (onlyProps) return false;
@@ -249,32 +249,32 @@ public class ObjectValue {
             values.put(key, val);
             return true;
         }
-        else if ("__proto__".equals(key)) return setPrototype(ctx, val);
+        else if ("__proto__".equals(key)) return setPrototype(ext, val);
         else if (nonWritableSet.contains(key)) return false;
-        else return setField(ctx, key, val);
+        else return setField(ext, key, val);
     }
-    public final boolean hasMember(Context ctx, Object key, boolean own) {
-        key = Values.normalize(ctx, key);
+    public final boolean hasMember(Extensions ext, Object key, boolean own) {
+        key = Values.normalize(ext, key);
 
         if (key != null && "__proto__".equals(key)) return true;
-        if (hasField(ctx, key)) return true;
+        if (hasField(ext, key)) return true;
         if (properties.containsKey(key)) return true;
         if (own) return false;
-        var proto = getPrototype(ctx);
-        return proto != null && proto.hasMember(ctx, key, own);
+        var proto = getPrototype(ext);
+        return proto != null && proto.hasMember(ext, key, own);
     }
-    public final boolean deleteMember(Context ctx, Object key) {
-        key = Values.normalize(ctx, key);
+    public final boolean deleteMember(Extensions ext, Object key) {
+        key = Values.normalize(ext, key);
 
         if (!memberConfigurable(key)) return false;
         properties.remove(key);
         nonWritableSet.remove(key);
         nonEnumerableSet.remove(key);
-        deleteField(ctx, key);
+        deleteField(ext, key);
         return true;
     }
-    public final boolean setPrototype(Context ctx, Object val) {
-        val = Values.normalize(ctx, val);
+    public final boolean setPrototype(Extensions ext, Object val) {
+        val = Values.normalize(ext, val);
 
         if (!extensible()) return false;
         if (val == null || val == Values.NULL) {
@@ -284,14 +284,14 @@ public class ObjectValue {
         else if (val instanceof ObjectValue) {
             var obj = (ObjectValue)val;
 
-            if (ctx != null) {
-                if (obj == ctx.get(Environment.OBJECT_PROTO)) prototype = OBJ_PROTO;
-                else if (obj == ctx.get(Environment.ARRAY_PROTO)) prototype = ARR_PROTO;
-                else if (obj == ctx.get(Environment.FUNCTION_PROTO)) prototype = FUNC_PROTO;
-                else if (obj == ctx.get(Environment.ERROR_PROTO)) prototype = ERR_PROTO;
-                else if (obj == ctx.get(Environment.SYNTAX_ERR_PROTO)) prototype = SYNTAX_ERR_PROTO;
-                else if (obj == ctx.get(Environment.TYPE_ERR_PROTO)) prototype = TYPE_ERR_PROTO;
-                else if (obj == ctx.get(Environment.RANGE_ERR_PROTO)) prototype = RANGE_ERR_PROTO;
+            if (ext != null) {
+                if (obj == ext.get(Environment.OBJECT_PROTO)) prototype = OBJ_PROTO;
+                else if (obj == ext.get(Environment.ARRAY_PROTO)) prototype = ARR_PROTO;
+                else if (obj == ext.get(Environment.FUNCTION_PROTO)) prototype = FUNC_PROTO;
+                else if (obj == ext.get(Environment.ERROR_PROTO)) prototype = ERR_PROTO;
+                else if (obj == ext.get(Environment.SYNTAX_ERR_PROTO)) prototype = SYNTAX_ERR_PROTO;
+                else if (obj == ext.get(Environment.TYPE_ERR_PROTO)) prototype = TYPE_ERR_PROTO;
+                else if (obj == ext.get(Environment.RANGE_ERR_PROTO)) prototype = RANGE_ERR_PROTO;
                 else prototype = obj;
             }
             else prototype = obj;
@@ -301,22 +301,22 @@ public class ObjectValue {
         return false;
     }
 
-    public final ObjectValue getMemberDescriptor(Context ctx, Object key) {
-        key = Values.normalize(ctx, key);
+    public final ObjectValue getMemberDescriptor(Extensions ext, Object key) {
+        key = Values.normalize(ext, key);
 
         var prop = properties.get(key);
         var res = new ObjectValue();
 
-        res.defineProperty(ctx, "configurable", memberConfigurable(key));
-        res.defineProperty(ctx, "enumerable", memberEnumerable(key));
+        res.defineProperty(ext, "configurable", memberConfigurable(key));
+        res.defineProperty(ext, "enumerable", memberEnumerable(key));
 
         if (prop != null) {
-            res.defineProperty(ctx, "get", prop.getter);
-            res.defineProperty(ctx, "set", prop.setter);
+            res.defineProperty(ext, "get", prop.getter);
+            res.defineProperty(ext, "set", prop.setter);
         }
-        else if (hasField(ctx, key)) {
-            res.defineProperty(ctx, "value", values.get(key));
-            res.defineProperty(ctx, "writable", memberWritable(key));
+        else if (hasField(ext, key)) {
+            res.defineProperty(ext, "value", values.get(key));
+            res.defineProperty(ext, "writable", memberWritable(key));
         }
         else return null;
         return res;
@@ -337,10 +337,10 @@ public class ObjectValue {
         return res;
     }
 
-    public ObjectValue(Context ctx, Map<?, ?> values) {
+    public ObjectValue(Extensions ext, Map<?, ?> values) {
         this(PlaceholderProto.OBJECT);
         for (var el : values.entrySet()) {
-            defineProperty(ctx, el.getKey(), el.getValue());
+            defineProperty(ext, el.getKey(), el.getValue());
         }
     }
     public ObjectValue(PlaceholderProto proto) {
diff --git a/src/java/me/topchetoeu/jscript/runtime/values/ScopeValue.java b/src/java/me/topchetoeu/jscript/runtime/values/ScopeValue.java
index 099ab96..a64f4c2 100644
--- a/src/java/me/topchetoeu/jscript/runtime/values/ScopeValue.java
+++ b/src/java/me/topchetoeu/jscript/runtime/values/ScopeValue.java
@@ -3,7 +3,7 @@ package me.topchetoeu.jscript.runtime.values;
 import java.util.HashMap;
 import java.util.List;
 
-import me.topchetoeu.jscript.runtime.Context;
+import me.topchetoeu.jscript.runtime.Extensions;
 import me.topchetoeu.jscript.runtime.scope.ValueVariable;
 
 public class ScopeValue extends ObjectValue {
@@ -11,31 +11,31 @@ public class ScopeValue extends ObjectValue {
     public final HashMap<String, Integer> names = new HashMap<>();
 
     @Override
-    protected Object getField(Context ctx, Object key) {
-        if (names.containsKey(key)) return variables[names.get(key)].get(ctx);
-        return super.getField(ctx, key);
+    protected Object getField(Extensions ext, Object key) {
+        if (names.containsKey(key)) return variables[names.get(key)].get(ext);
+        return super.getField(ext, key);
     }
     @Override
-    protected boolean setField(Context ctx, Object key, Object val) {
+    protected boolean setField(Extensions ext, Object key, Object val) {
         if (names.containsKey(key)) {
-            variables[names.get(key)].set(ctx, val);
+            variables[names.get(key)].set(ext, val);
             return true;
         }
 
-        var proto = getPrototype(ctx);
-        if (proto != null && proto.hasMember(ctx, key, false) && proto.setField(ctx, key, val)) return true;
+        var proto = getPrototype(ext);
+        if (proto != null && proto.hasMember(ext, key, false) && proto.setField(ext, key, val)) return true;
 
-        return super.setField(ctx, key, val);
+        return super.setField(ext, key, val);
     }
     @Override
-    protected void deleteField(Context ctx, Object key) {
+    protected void deleteField(Extensions ext, Object key) {
         if (names.containsKey(key)) return;
-        super.deleteField(ctx, key);
+        super.deleteField(ext, key);
     }
     @Override
-    protected boolean hasField(Context ctx, Object key) {
+    protected boolean hasField(Extensions ext, Object key) {
         if (names.containsKey(key)) return true;
-        return super.hasField(ctx, key);
+        return super.hasField(ext, key);
     }
     @Override
     public List<Object> keys(boolean includeNonEnumerable) {
diff --git a/src/java/me/topchetoeu/jscript/runtime/values/Values.java b/src/java/me/topchetoeu/jscript/runtime/values/Values.java
index ed4b288..db93cd8 100644
--- a/src/java/me/topchetoeu/jscript/runtime/values/Values.java
+++ b/src/java/me/topchetoeu/jscript/runtime/values/Values.java
@@ -14,12 +14,13 @@ import java.util.Map;
 
 import me.topchetoeu.jscript.common.Operation;
 import me.topchetoeu.jscript.lib.PromiseLib;
-import me.topchetoeu.jscript.runtime.Context;
 import me.topchetoeu.jscript.runtime.Environment;
+import me.topchetoeu.jscript.runtime.Extensions;
 import me.topchetoeu.jscript.runtime.debug.DebugContext;
 import me.topchetoeu.jscript.runtime.exceptions.ConvertException;
 import me.topchetoeu.jscript.runtime.exceptions.EngineException;
 import me.topchetoeu.jscript.runtime.exceptions.SyntaxException;
+import me.topchetoeu.jscript.utils.interop.NativeWrapperProvider;
 
 public class Values {
     public static enum CompareResult {
@@ -73,11 +74,11 @@ public class Values {
         return "object";
     }
 
-    private static Object tryCallConvertFunc(Context ctx, Object obj, String name) {
-        var func = getMember(ctx, obj, name);
+    private static Object tryCallConvertFunc(Extensions ext, Object obj, String name) {
+        var func = getMember(ext, obj, name);
 
         if (func instanceof FunctionValue) {
-            var res = Values.call(ctx, func, obj);
+            var res = Values.call(ext, func, obj);
             if (isPrimitive(res)) return res;
         }
 
@@ -94,16 +95,16 @@ public class Values {
             obj == NULL;
     }
 
-    public static Object toPrimitive(Context ctx, Object obj, ConvertHint hint) {
-        obj = normalize(ctx, obj);
+    public static Object toPrimitive(Extensions ext, Object obj, ConvertHint hint) {
+        obj = normalize(ext, obj);
         if (isPrimitive(obj)) return obj;
 
         var first = hint == ConvertHint.VALUEOF ? "valueOf" : "toString";
         var second = hint == ConvertHint.VALUEOF ? "toString" : "valueOf";
 
-        if (ctx != null) {
-            try { return tryCallConvertFunc(ctx, obj, first); }
-            catch (EngineException unused) { return tryCallConvertFunc(ctx, obj, second); }
+        if (ext != null) {
+            try { return tryCallConvertFunc(ext, obj, first); }
+            catch (EngineException unused) { return tryCallConvertFunc(ext, obj, second); }
         }
 
         throw EngineException.ofType("Value couldn't be converted to a primitive.");
@@ -115,8 +116,8 @@ public class Values {
         if (obj instanceof Boolean) return (Boolean)obj;
         return true;
     }
-    public static double toNumber(Context ctx, Object obj) {
-        var val = toPrimitive(ctx, obj, ConvertHint.VALUEOF);
+    public static double toNumber(Extensions ext, Object obj) {
+        var val = toPrimitive(ext, obj, ConvertHint.VALUEOF);
 
         if (val instanceof Number) return number(val);
         if (val instanceof Boolean) return ((Boolean)val) ? 1 : 0;
@@ -126,8 +127,8 @@ public class Values {
         }
         return Double.NaN;
     }
-    public static String toString(Context ctx, Object obj) {
-        var val = toPrimitive(ctx, obj, ConvertHint.VALUEOF);
+    public static String toString(Extensions ext, Object obj) {
+        var val = toPrimitive(ext, obj, ConvertHint.VALUEOF);
 
         if (val == null) return "undefined";
         if (val == NULL) return "null";
@@ -146,63 +147,63 @@ public class Values {
         return "Unknown value";
     }
 
-    public static Object add(Context ctx, Object a, Object b) {
-        if (a instanceof String || b instanceof String) return toString(ctx, a) + toString(ctx, b);
-        else return toNumber(ctx, a) + toNumber(ctx, b);
+    public static Object add(Extensions ext, Object a, Object b) {
+        if (a instanceof String || b instanceof String) return toString(ext, a) + toString(ext, b);
+        else return toNumber(ext, a) + toNumber(ext, b);
     }
-    public static double subtract(Context ctx, Object a, Object b) {
-        return toNumber(ctx, a) - toNumber(ctx, b);
+    public static double subtract(Extensions ext, Object a, Object b) {
+        return toNumber(ext, a) - toNumber(ext, b);
     }
-    public static double multiply(Context ctx, Object a, Object b) {
-        return toNumber(ctx, a) * toNumber(ctx, b);
+    public static double multiply(Extensions ext, Object a, Object b) {
+        return toNumber(ext, a) * toNumber(ext, b);
     }
-    public static double divide(Context ctx, Object a, Object b) {
-        return toNumber(ctx, a) / toNumber(ctx, b);
+    public static double divide(Extensions ext, Object a, Object b) {
+        return toNumber(ext, a) / toNumber(ext, b);
     }
-    public static double modulo(Context ctx, Object a, Object b) {
-        return toNumber(ctx, a) % toNumber(ctx, b);
+    public static double modulo(Extensions ext, Object a, Object b) {
+        return toNumber(ext, a) % toNumber(ext, b);
     }
     
-    public static double negative(Context ctx, Object obj) {
-        return -toNumber(ctx, obj);
+    public static double negative(Extensions ext, Object obj) {
+        return -toNumber(ext, obj);
     }
 
-    public static int and(Context ctx, Object a, Object b) {
-        return (int)toNumber(ctx, a) & (int)toNumber(ctx, b);
+    public static int and(Extensions ext, Object a, Object b) {
+        return (int)toNumber(ext, a) & (int)toNumber(ext, b);
     }
-    public static int or(Context ctx, Object a, Object b) {
-        return (int)toNumber(ctx, a) | (int)toNumber(ctx, b);
+    public static int or(Extensions ext, Object a, Object b) {
+        return (int)toNumber(ext, a) | (int)toNumber(ext, b);
     }
-    public static int xor(Context ctx, Object a, Object b) {
-        return (int)toNumber(ctx, a) ^ (int)toNumber(ctx, b);
+    public static int xor(Extensions ext, Object a, Object b) {
+        return (int)toNumber(ext, a) ^ (int)toNumber(ext, b);
     }
-    public static int bitwiseNot(Context ctx, Object obj) {
-        return ~(int)toNumber(ctx, obj);
+    public static int bitwiseNot(Extensions ext, Object obj) {
+        return ~(int)toNumber(ext, obj);
     }
 
-    public static int shiftLeft(Context ctx, Object a, Object b) {
-        return (int)toNumber(ctx, a) << (int)toNumber(ctx, b);
+    public static int shiftLeft(Extensions ext, Object a, Object b) {
+        return (int)toNumber(ext, a) << (int)toNumber(ext, b);
     }
-    public static int shiftRight(Context ctx, Object a, Object b) {
-        return (int)toNumber(ctx, a) >> (int)toNumber(ctx, b);
+    public static int shiftRight(Extensions ext, Object a, Object b) {
+        return (int)toNumber(ext, a) >> (int)toNumber(ext, b);
     }
-    public static long unsignedShiftRight(Context ctx, Object a, Object b) {
-        long _a = (long)toNumber(ctx, a);
-        long _b = (long)toNumber(ctx, b);
+    public static long unsignedShiftRight(Extensions ext, Object a, Object b) {
+        long _a = (long)toNumber(ext, a);
+        long _b = (long)toNumber(ext, b);
 
         if (_a < 0) _a += 0x100000000l;
         if (_b < 0) _b += 0x100000000l;
         return _a >>> _b;
     }
 
-    public static CompareResult compare(Context ctx, Object a, Object b) {
-        a = toPrimitive(ctx, a, ConvertHint.VALUEOF);
-        b = toPrimitive(ctx, b, ConvertHint.VALUEOF);
+    public static CompareResult compare(Extensions ext, Object a, Object b) {
+        a = toPrimitive(ext, a, ConvertHint.VALUEOF);
+        b = toPrimitive(ext, b, ConvertHint.VALUEOF);
 
         if (a instanceof String && b instanceof String) CompareResult.from(((String)a).compareTo((String)b));
 
-        var _a = toNumber(ctx, a);
-        var _b = toNumber(ctx, b);
+        var _a = toNumber(ext, a);
+        var _b = toNumber(ext, b);
 
         if (Double.isNaN(_a) || Double.isNaN(_b)) return CompareResult.NOT_EQUAL;
 
@@ -213,60 +214,60 @@ public class Values {
         return !toBoolean(obj);
     }
 
-    public static boolean isInstanceOf(Context ctx, Object obj, Object proto) {
+    public static boolean isInstanceOf(Extensions ext, Object obj, Object proto) {
         if (obj == null || obj == NULL || proto == null || proto == NULL) return false;
-        var val = getPrototype(ctx, obj);
+        var val = getPrototype(ext, obj);
 
         while (val != null) {
             if (val.equals(proto)) return true;
-            val = val.getPrototype(ctx);
+            val = val.getPrototype(ext);
         }
 
         return false;
     }
 
-    public static Object operation(Context ctx, Operation op, Object ...args) {
+    public static Object operation(Extensions ext, Operation op, Object ...args) {
         switch (op) {
-            case ADD: return add(ctx, args[0], args[1]);
-            case SUBTRACT: return subtract(ctx, args[0], args[1]);
-            case DIVIDE: return divide(ctx, args[0], args[1]);
-            case MULTIPLY: return multiply(ctx, args[0], args[1]);
-            case MODULO: return modulo(ctx, args[0], args[1]);
+            case ADD: return add(ext, args[0], args[1]);
+            case SUBTRACT: return subtract(ext, args[0], args[1]);
+            case DIVIDE: return divide(ext, args[0], args[1]);
+            case MULTIPLY: return multiply(ext, args[0], args[1]);
+            case MODULO: return modulo(ext, args[0], args[1]);
 
-            case AND: return and(ctx, args[0], args[1]);
-            case OR: return or(ctx, args[0], args[1]);
-            case XOR: return xor(ctx, args[0], args[1]);
+            case AND: return and(ext, args[0], args[1]);
+            case OR: return or(ext, args[0], args[1]);
+            case XOR: return xor(ext, args[0], args[1]);
 
-            case EQUALS: return strictEquals(ctx, args[0], args[1]);
-            case NOT_EQUALS: return !strictEquals(ctx, args[0], args[1]);
-            case LOOSE_EQUALS: return looseEqual(ctx, args[0], args[1]);
-            case LOOSE_NOT_EQUALS: return !looseEqual(ctx, args[0], args[1]);
+            case EQUALS: return strictEquals(ext, args[0], args[1]);
+            case NOT_EQUALS: return !strictEquals(ext, args[0], args[1]);
+            case LOOSE_EQUALS: return looseEqual(ext, args[0], args[1]);
+            case LOOSE_NOT_EQUALS: return !looseEqual(ext, args[0], args[1]);
 
-            case GREATER: return compare(ctx, args[0], args[1]).greater();
-            case GREATER_EQUALS: return compare(ctx, args[0], args[1]).greaterOrEqual();
-            case LESS: return compare(ctx, args[0], args[1]).less();
-            case LESS_EQUALS: return compare(ctx, args[0], args[1]).lessOrEqual();
+            case GREATER: return compare(ext, args[0], args[1]).greater();
+            case GREATER_EQUALS: return compare(ext, args[0], args[1]).greaterOrEqual();
+            case LESS: return compare(ext, args[0], args[1]).less();
+            case LESS_EQUALS: return compare(ext, args[0], args[1]).lessOrEqual();
 
-            case INVERSE: return bitwiseNot(ctx, args[0]);
+            case INVERSE: return bitwiseNot(ext, args[0]);
             case NOT: return not(args[0]);
-            case POS: return toNumber(ctx, args[0]);
-            case NEG: return negative(ctx, args[0]);
+            case POS: return toNumber(ext, args[0]);
+            case NEG: return negative(ext, args[0]);
 
-            case SHIFT_LEFT: return shiftLeft(ctx, args[0], args[1]);
-            case SHIFT_RIGHT: return shiftRight(ctx, args[0], args[1]);
-            case USHIFT_RIGHT: return unsignedShiftRight(ctx, args[0], args[1]);
+            case SHIFT_LEFT: return shiftLeft(ext, args[0], args[1]);
+            case SHIFT_RIGHT: return shiftRight(ext, args[0], args[1]);
+            case USHIFT_RIGHT: return unsignedShiftRight(ext, args[0], args[1]);
 
-            case IN: return hasMember(ctx, args[1], args[0], false);
+            case IN: return hasMember(ext, args[1], args[0], false);
             case INSTANCEOF: {
-                var proto = getMember(ctx, args[1], "prototype");
-                return isInstanceOf(ctx, args[0], proto);
+                var proto = getMember(ext, args[1], "prototype");
+                return isInstanceOf(ext, args[0], proto);
             }
 
             default: return null;
         }
     }
 
-    public static Object getMember(Context ctx, Object obj, Object key) {
+    public static Object getMember(Extensions ctx, Object obj, Object key) {
         obj = normalize(ctx, obj); key = normalize(ctx, key);
         if (obj == null) throw new IllegalArgumentException("Tried to access member of undefined.");
         if (obj == NULL) throw new IllegalArgumentException("Tried to access member of null.");
@@ -286,12 +287,12 @@ public class Values {
         else if (key != null && "__proto__".equals(key)) return proto;
         else return proto.getMember(ctx, key, obj);
     }
-    public static Object getMemberPath(Context ctx, Object obj, Object ...path) {
+    public static Object getMemberPath(Extensions ctx, Object obj, Object ...path) {
         var res = obj;
         for (var key : path) res = getMember(ctx, res, key);
         return res;
     }
-    public static boolean setMember(Context ctx, Object obj, Object key, Object val) {
+    public static boolean setMember(Extensions ctx, Object obj, Object key, Object val) {
         obj = normalize(ctx, obj); key = normalize(ctx, key); val = normalize(ctx, val);
         if (obj == null) throw EngineException.ofType("Tried to access member of undefined.");
         if (obj == NULL) throw EngineException.ofType("Tried to access member of null.");
@@ -301,7 +302,7 @@ public class Values {
         var proto = getPrototype(ctx, obj);
         return proto.setMember(ctx, key, val, obj, true);
     }
-    public static boolean hasMember(Context ctx, Object obj, Object key, boolean own) {
+    public static boolean hasMember(Extensions ctx, Object obj, Object key, boolean own) {
         if (obj == null || obj == NULL) return false;
         obj = normalize(ctx, obj); key = normalize(ctx, key);
 
@@ -319,36 +320,36 @@ public class Values {
         var proto = getPrototype(ctx, obj);
         return proto != null && proto.hasMember(ctx, key, own);
     }
-    public static boolean deleteMember(Context ctx, Object obj, Object key) {
+    public static boolean deleteMember(Extensions ext, Object obj, Object key) {
         if (obj == null || obj == NULL) return false;
-        obj = normalize(ctx, obj); key = normalize(ctx, key);
+        obj = normalize(ext, obj); key = normalize(ext, key);
 
-        if (obj instanceof ObjectValue) return ((ObjectValue)obj).deleteMember(ctx, key);
+        if (obj instanceof ObjectValue) return ((ObjectValue)obj).deleteMember(ext, key);
         else return false;
     }
-    public static ObjectValue getPrototype(Context ctx, Object obj) {
+    public static ObjectValue getPrototype(Extensions ext, Object obj) {
         if (obj == null || obj == NULL) return null;
-        obj = normalize(ctx, obj);
-        if (obj instanceof ObjectValue) return ((ObjectValue)obj).getPrototype(ctx);
-        if (ctx == null) return null;
+        obj = normalize(ext, obj);
+        if (obj instanceof ObjectValue) return ((ObjectValue)obj).getPrototype(ext);
+        if (ext == null) return null;
 
-        if (obj instanceof String) return ctx.get(Environment.STRING_PROTO);
-        else if (obj instanceof Number) return ctx.get(Environment.NUMBER_PROTO);
-        else if (obj instanceof Boolean) return ctx.get(Environment.BOOL_PROTO);
-        else if (obj instanceof Symbol) return ctx.get(Environment.SYMBOL_PROTO);
+        if (obj instanceof String) return ext.get(Environment.STRING_PROTO);
+        else if (obj instanceof Number) return ext.get(Environment.NUMBER_PROTO);
+        else if (obj instanceof Boolean) return ext.get(Environment.BOOL_PROTO);
+        else if (obj instanceof Symbol) return ext.get(Environment.SYMBOL_PROTO);
 
         return null;
     }
-    public static boolean setPrototype(Context ctx, Object obj, Object proto) {
-        obj = normalize(ctx, obj);
-        return obj instanceof ObjectValue && ((ObjectValue)obj).setPrototype(ctx, proto);
+    public static boolean setPrototype(Extensions ext, Object obj, Object proto) {
+        obj = normalize(ext, obj);
+        return obj instanceof ObjectValue && ((ObjectValue)obj).setPrototype(ext, proto);
     }
-    public static void makePrototypeChain(Context ctx, Object... chain) {
+    public static void makePrototypeChain(Extensions ext, Object... chain) {
         for(var i = 1; i < chain.length; i++) {
-            setPrototype(ctx, chain[i], chain[i - 1]);
+            setPrototype(ext, chain[i], chain[i - 1]);
         }
     }
-    public static List<Object> getMembers(Context ctx, Object obj, boolean own, boolean includeNonEnumerable) {  
+    public static List<Object> getMembers(Extensions ext, Object obj, boolean own, boolean includeNonEnumerable) {  
         List<Object> res = new ArrayList<>();
 
         if (obj instanceof ObjectValue) res = ((ObjectValue)obj).keys(includeNonEnumerable);
@@ -357,26 +358,26 @@ public class Values {
         }
 
         if (!own) {
-            var proto = getPrototype(ctx, obj);
+            var proto = getPrototype(ext, obj);
 
             while (proto != null) {
                 res.addAll(proto.keys(includeNonEnumerable));
-                proto = getPrototype(ctx, proto);
+                proto = getPrototype(ext, proto);
             }
         }
 
 
         return res;
     }
-    public static ObjectValue getMemberDescriptor(Context ctx, Object obj, Object key) {
-        if (obj instanceof ObjectValue) return ((ObjectValue)obj).getMemberDescriptor(ctx, key);
+    public static ObjectValue getMemberDescriptor(Extensions ext, Object obj, Object key) {
+        if (obj instanceof ObjectValue) return ((ObjectValue)obj).getMemberDescriptor(ext, key);
         else if (obj instanceof String && key instanceof Number) {
             var i = ((Number)key).intValue();
             var _i = ((Number)key).doubleValue();
             if (i - _i != 0) return null;
             if (i < 0 || i >= ((String)obj).length()) return null;
 
-            return new ObjectValue(ctx, Map.of(
+            return new ObjectValue(ext, Map.of(
                 "value", ((String)obj).charAt(i) + "",
                 "writable", false,
                 "enumerable", true,
@@ -386,17 +387,17 @@ public class Values {
         else return null;
     }
 
-    public static Object call(Context ctx, Object func, Object thisArg, Object ...args) {
+    public static Object call(Extensions ext, Object func, Object thisArg, Object ...args) {
         if (!(func instanceof FunctionValue)) throw EngineException.ofType("Tried to call a non-function value.");
-        return ((FunctionValue)func).call(ctx, thisArg, args);
+        return ((FunctionValue)func).call(ext, thisArg, args);
     }
-    public static Object callNew(Context ctx, Object func, Object ...args) {
+    public static Object callNew(Extensions ext, Object func, Object ...args) {
         var res = new ObjectValue();
         try {
-            var proto = Values.getMember(ctx, func, "prototype");
-            setPrototype(ctx, res, proto);
+            var proto = Values.getMember(ext, func, "prototype");
+            setPrototype(ext, res, proto);
 
-            var ret = call(ctx, func, res, args);
+            var ret = call(ext, func, res, args);
 
             if (!isPrimitive(ret)) return ret;
             return res;
@@ -406,8 +407,9 @@ public class Values {
         }
     }
 
-    public static boolean strictEquals(Context ctx, Object a, Object b) {
-        a = normalize(ctx, a); b = normalize(ctx, b);
+    public static boolean strictEquals(Extensions ext, Object a, Object b) {
+        a = normalize(ext, a);
+        b = normalize(ext, b);
 
         if (a == null || b == null) return a == null && b == null;
         if (isNan(a) || isNan(b)) return false;
@@ -416,8 +418,8 @@ public class Values {
 
         return a == b || a.equals(b);
     }
-    public static boolean looseEqual(Context ctx, Object a, Object b) {
-        a = normalize(ctx, a); b = normalize(ctx, b);
+    public static boolean looseEqual(Extensions ext, Object a, Object b) {
+        a = normalize(ext, a); b = normalize(ext, b);
 
         // In loose equality, null is equivalent to undefined
         if (a == NULL) a = null;
@@ -428,19 +430,19 @@ public class Values {
         if (!isPrimitive(a) && !isPrimitive(b)) return a == b;
 
         // Convert values to primitives
-        a = toPrimitive(ctx, a, ConvertHint.VALUEOF);
-        b = toPrimitive(ctx, b, ConvertHint.VALUEOF);
+        a = toPrimitive(ext, a, ConvertHint.VALUEOF);
+        b = toPrimitive(ext, b, ConvertHint.VALUEOF);
 
         // Compare symbols by reference
         if (a instanceof Symbol || b instanceof Symbol) return a == b;
         if (a instanceof Boolean || b instanceof Boolean) return toBoolean(a) == toBoolean(b);
-        if (a instanceof Number || b instanceof Number) return strictEquals(ctx, toNumber(ctx, a), toNumber(ctx, b));
+        if (a instanceof Number || b instanceof Number) return strictEquals(ext, toNumber(ext, a), toNumber(ext, b));
 
         // Default to strings
-        return toString(ctx, a).equals(toString(ctx, b));
+        return toString(ext, a).equals(toString(ext, b));
     }
 
-    public static Object normalize(Context ctx, Object val) {
+    public static Object normalize(Extensions ext, Object val) {
         if (val instanceof Number) return number(val);
         if (isPrimitive(val) || val instanceof ObjectValue) return val;
         if (val instanceof Character) return val + "";
@@ -449,7 +451,7 @@ public class Values {
             var res = new ObjectValue();
 
             for (var entry : ((Map<?, ?>)val).entrySet()) {
-                res.defineProperty(ctx, entry.getKey(), entry.getValue());
+                res.defineProperty(ext, entry.getKey(), entry.getValue());
             }
 
             return res;
@@ -459,22 +461,22 @@ public class Values {
             var res = new ArrayValue();
 
             for (var entry : ((Iterable<?>)val)) {
-                res.set(ctx, res.size(), entry);
+                res.set(ext, res.size(), entry);
             }
 
             return res;
         }
 
         if (val instanceof Class) {
-            if (ctx == null) return null;
-            else return ctx.environment.wrappers.getConstr((Class<?>)val);
+            if (ext == null) return null;
+            else return NativeWrapperProvider.get(ext).getConstr((Class<?>)val);
         }
 
-        return NativeWrapper.of(ctx, val);
+        return NativeWrapper.of(ext, val);
     }
 
     @SuppressWarnings("unchecked")
-    public static <T> T convert(Context ctx, Object obj, Class<T> clazz) {
+    public static <T> T convert(Extensions ext, Object obj, Class<T> clazz) {
         if (clazz == Void.class) return null;
 
         if (obj instanceof NativeWrapper) {
@@ -488,19 +490,19 @@ public class Values {
             if (clazz.isAssignableFrom(ArrayList.class)) {
                 var raw = ((ArrayValue)obj).toArray();
                 var res = new ArrayList<>();
-                for (var i = 0; i < raw.length; i++) res.add(convert(ctx, raw[i], Object.class));
+                for (var i = 0; i < raw.length; i++) res.add(convert(ext, raw[i], Object.class));
                 return (T)new ArrayList<>(res);
             }
             if (clazz.isAssignableFrom(HashSet.class)) {
                 var raw = ((ArrayValue)obj).toArray();
                 var res = new HashSet<>();
-                for (var i = 0; i < raw.length; i++) res.add(convert(ctx, raw[i], Object.class));
+                for (var i = 0; i < raw.length; i++) res.add(convert(ext, raw[i], Object.class));
                 return (T)new HashSet<>(res);
             }
             if (clazz.isArray()) {
                 var raw = ((ArrayValue)obj).toArray();
                 Object res = Array.newInstance(clazz.getComponentType(), raw.length);
-                for (var i = 0; i < raw.length; i++) Array.set(res, i, convert(ctx, raw[i], Object.class));
+                for (var i = 0; i < raw.length; i++) Array.set(res, i, convert(ext, raw[i], Object.class));
                 return (T)res;
             }
         }
@@ -508,25 +510,25 @@ public class Values {
         if (obj instanceof ObjectValue && clazz.isAssignableFrom(HashMap.class)) {
             var res = new HashMap<>();
             for (var el : ((ObjectValue)obj).values.entrySet()) res.put(
-                convert(ctx, el.getKey(), null),
-                convert(ctx, el.getValue(), null)
+                convert(ext, el.getKey(), null),
+                convert(ext, el.getValue(), null)
             );
             return (T)res;
         }
 
-        if (clazz == String.class) return (T)toString(ctx, obj);
+        if (clazz == String.class) return (T)toString(ext, obj);
         if (clazz == Boolean.class || clazz == Boolean.TYPE) return (T)(Boolean)toBoolean(obj);
-        if (clazz == Byte.class || clazz == byte.class) return (T)(Byte)(byte)toNumber(ctx, obj);
-        if (clazz == Integer.class || clazz == int.class) return (T)(Integer)(int)toNumber(ctx, obj);
-        if (clazz == Long.class || clazz == long.class) return (T)(Long)(long)toNumber(ctx, obj);
-        if (clazz == Short.class || clazz == short.class) return (T)(Short)(short)toNumber(ctx, obj);
-        if (clazz == Float.class || clazz == float.class) return (T)(Float)(float)toNumber(ctx, obj);
-        if (clazz == Double.class || clazz == double.class) return (T)(Double)toNumber(ctx, obj);
+        if (clazz == Byte.class || clazz == byte.class) return (T)(Byte)(byte)toNumber(ext, obj);
+        if (clazz == Integer.class || clazz == int.class) return (T)(Integer)(int)toNumber(ext, obj);
+        if (clazz == Long.class || clazz == long.class) return (T)(Long)(long)toNumber(ext, obj);
+        if (clazz == Short.class || clazz == short.class) return (T)(Short)(short)toNumber(ext, obj);
+        if (clazz == Float.class || clazz == float.class) return (T)(Float)(float)toNumber(ext, obj);
+        if (clazz == Double.class || clazz == double.class) return (T)(Double)toNumber(ext, obj);
 
         if (clazz == Character.class || clazz == char.class) {
             if (obj instanceof Number) return (T)(Character)(char)number(obj);
             else {
-                var res = toString(ctx, obj);
+                var res = toString(ext, obj);
                 if (res.length() == 0) throw new ConvertException("\"\"", "Character");
                 else return (T)(Character)res.charAt(0);
             }
@@ -535,23 +537,23 @@ public class Values {
         if (obj == null) return null;
         if (clazz.isInstance(obj)) return (T)obj;
         if (clazz.isAssignableFrom(NativeWrapper.class)) {
-            return (T)NativeWrapper.of(ctx, obj);
+            return (T)NativeWrapper.of(ext, obj);
         }
 
         throw new ConvertException(type(obj), clazz.getSimpleName());
     }
 
-    public static Iterable<Object> fromJSIterator(Context ctx, Object obj) {
+    public static Iterable<Object> fromJSIterator(Extensions ext, Object obj) {
         return () -> {
             try {
                 var symbol = Symbol.get("Symbol.iterator");
 
-                var iteratorFunc = getMember(ctx, obj, symbol);
+                var iteratorFunc = getMember(ext, obj, symbol);
                 if (!(iteratorFunc instanceof FunctionValue)) return Collections.emptyIterator();
                 var iterator = iteratorFunc instanceof FunctionValue ?
-                    ((FunctionValue)iteratorFunc).call(ctx, obj, obj) :
+                    ((FunctionValue)iteratorFunc).call(ext, obj, obj) :
                     iteratorFunc;
-                var nextFunc = getMember(ctx, call(ctx, iteratorFunc, obj), "next");
+                var nextFunc = getMember(ext, call(ext, iteratorFunc, obj), "next");
 
                 if (!(nextFunc instanceof FunctionValue)) return Collections.emptyIterator();
 
@@ -563,11 +565,11 @@ public class Values {
                     private void loadNext() {
                         if (next == null) value = null;
                         else if (consumed) {
-                            var curr = next.call(ctx, iterator);
+                            var curr = next.call(ext, iterator);
                             if (curr == null) { next = null; value = null; }
-                            if (toBoolean(Values.getMember(ctx, curr, "done"))) { next = null; value = null; }
+                            if (toBoolean(Values.getMember(ext, curr, "done"))) { next = null; value = null; }
                             else {
-                                this.value = Values.getMember(ctx, curr, "value");
+                                this.value = Values.getMember(ext, curr, "value");
                                 consumed = false;
                             }
                         }
@@ -594,17 +596,17 @@ public class Values {
         };
     }
 
-    public static ObjectValue toJSIterator(Context ctx, Iterator<?> it) {
+    public static ObjectValue toJSIterator(Extensions ext, Iterator<?> it) {
         var res = new ObjectValue();
 
         try {
-            var key = getMember(ctx, getMember(ctx, ctx.get(Environment.SYMBOL_PROTO), "constructor"), "iterator");
-            res.defineProperty(ctx, key, new NativeFunction("", args -> args.self));
+            var key = getMember(ext, getMember(ext, ext.get(Environment.SYMBOL_PROTO), "constructor"), "iterator");
+            res.defineProperty(ext, key, new NativeFunction("", args -> args.self));
         }
         catch (IllegalArgumentException | NullPointerException e) { }
 
-        res.defineProperty(ctx, "next", new NativeFunction("", args -> {
-            if (!it.hasNext()) return new ObjectValue(ctx, Map.of("done", true));
+        res.defineProperty(ext, "next", new NativeFunction("", args -> {
+            if (!it.hasNext()) return new ObjectValue(ext, Map.of("done", true));
             else {
                 var obj = new ObjectValue();
                 obj.defineProperty(args.ctx, "value", it.next());
@@ -615,22 +617,22 @@ public class Values {
         return res;
     }
 
-    public static ObjectValue toJSIterator(Context ctx, Iterable<?> it) {
-        return toJSIterator(ctx, it.iterator());
+    public static ObjectValue toJSIterator(Extensions ext, Iterable<?> it) {
+        return toJSIterator(ext, it.iterator());
     }
 
-    public static ObjectValue toJSAsyncIterator(Context ctx, Iterator<?> it) {
+    public static ObjectValue toJSAsyncIterator(Extensions ext, Iterator<?> it) {
         var res = new ObjectValue();
 
         try {
-            var key = getMemberPath(ctx, ctx.get(Environment.SYMBOL_PROTO), "constructor", "asyncIterator");
-            res.defineProperty(ctx, key, new NativeFunction("", args -> args.self));
+            var key = getMemberPath(ext, ext.get(Environment.SYMBOL_PROTO), "constructor", "asyncIterator");
+            res.defineProperty(ext, key, new NativeFunction("", args -> args.self));
         }
         catch (IllegalArgumentException | NullPointerException e) { }
 
-        res.defineProperty(ctx, "next", new NativeFunction("", args -> {
+        res.defineProperty(ext, "next", new NativeFunction("", args -> {
             return PromiseLib.await(args.ctx, () -> {
-                if (!it.hasNext()) return new ObjectValue(ctx, Map.of("done", true));
+                if (!it.hasNext()) return new ObjectValue(ext, Map.of("done", true));
                 else {
                     var obj = new ObjectValue();
                     obj.defineProperty(args.ctx, "value", it.next());
@@ -652,14 +654,14 @@ public class Values {
         if (protoObj.values.size() + protoObj.properties.size() != 1) return false;
         return true;
     }
-    private static String toReadable(Context ctx, Object val, HashSet<Object> passed, int tab) {
+    private static String toReadable(Extensions ext, Object val, HashSet<Object> passed, int tab) {
         if (tab == 0 && val instanceof String) return (String)val;
 
         if (passed.contains(val)) return "[circular]";
 
         var printed = true;
         var res = new StringBuilder();
-        var dbg = DebugContext.get(ctx);
+        var dbg = DebugContext.get(ext);
 
         if (val instanceof FunctionValue) {
             res.append(val.toString());
@@ -673,7 +675,7 @@ public class Values {
             for (int i = 0; i < obj.size(); i++) {
                 if (i != 0) res.append(", ");
                 else res.append(" ");
-                if (obj.has(i)) res.append(toReadable(ctx, obj.get(i), passed, tab));
+                if (obj.has(i)) res.append(toReadable(ext, obj.get(i), passed, tab));
                 else res.append("<empty>");
             }
             res.append(" ] ");
@@ -700,14 +702,14 @@ public class Values {
 
                 for (var el : obj.values.entrySet()) {
                     for (int i = 0; i < tab + 1; i++) res.append("    ");
-                    res.append(toReadable(ctx, el.getKey(), passed, tab + 1));
+                    res.append(toReadable(ext, el.getKey(), passed, tab + 1));
                     res.append(": ");
-                    res.append(toReadable(ctx, el.getValue(), passed, tab + 1));
+                    res.append(toReadable(ext, el.getValue(), passed, tab + 1));
                     res.append(",\n");
                 }
                 for (var el : obj.properties.entrySet()) {
                     for (int i = 0; i < tab + 1; i++) res.append("    ");
-                    res.append(toReadable(ctx, el.getKey(), passed, tab + 1));
+                    res.append(toReadable(ext, el.getKey(), passed, tab + 1));
                     res.append(": [prop],\n");
                 }
 
@@ -720,23 +722,23 @@ public class Values {
         else if (val == null) return "undefined";
         else if (val == Values.NULL) return "null";
         else if (val instanceof String) return "'" + val + "'";
-        else return Values.toString(ctx, val);
+        else return Values.toString(ext, val);
 
         return res.toString();
     }
 
-    public static String toReadable(Context ctx, Object val) {
-        return toReadable(ctx, val, new HashSet<>(), 0);
+    public static String toReadable(Extensions ext, Object val) {
+        return toReadable(ext, val, new HashSet<>(), 0);
     }
     public static String errorToReadable(RuntimeException err, String prefix) {
         prefix = prefix == null ? "Uncaught" : "Uncaught " + prefix;
         if (err instanceof EngineException) {
             var ee = ((EngineException)err);
             try {
-                return prefix + " " + ee.toString(new Context(ee.env));
+                return prefix + " " + ee.toString(ee.ext);
             }
             catch (EngineException ex) {
-                return prefix + " " + toReadable(new Context(ee.env), ee.value);
+                return prefix + " " + toReadable(ee.ext, ee.value);
             }
         }
         else if (err instanceof SyntaxException) {
@@ -750,8 +752,8 @@ public class Values {
             return prefix + " internal error " + str.toString();
         }
     }
-    public static void printValue(Context ctx, Object val) {
-        System.out.print(toReadable(ctx, val));
+    public static void printValue(Extensions ext, Object val) {
+        System.out.print(toReadable(ext, val));
     }
     public static void printError(RuntimeException err, String prefix) {
         System.out.println(errorToReadable(err, prefix));
diff --git a/src/java/me/topchetoeu/jscript/utils/debug/SimpleDebugger.java b/src/java/me/topchetoeu/jscript/utils/debug/SimpleDebugger.java
index 5386ba6..f7af2e1 100644
--- a/src/java/me/topchetoeu/jscript/utils/debug/SimpleDebugger.java
+++ b/src/java/me/topchetoeu/jscript/utils/debug/SimpleDebugger.java
@@ -27,6 +27,7 @@ import me.topchetoeu.jscript.runtime.Context;
 import me.topchetoeu.jscript.runtime.Engine;
 import me.topchetoeu.jscript.runtime.Environment;
 import me.topchetoeu.jscript.runtime.EventLoop;
+import me.topchetoeu.jscript.runtime.Extensions;
 import me.topchetoeu.jscript.runtime.Frame;
 import me.topchetoeu.jscript.runtime.debug.DebugContext;
 import me.topchetoeu.jscript.runtime.exceptions.EngineException;
@@ -149,7 +150,7 @@ public class SimpleDebugger implements Debugger {
             this.frame = frame;
             this.id = id;
 
-            this.global = frame.function.environment.global.obj;
+            this.global = GlobalScope.get(frame.ctx).obj;
             this.local = frame.getLocalScope();
             this.capture = frame.getCaptureScope();
             Values.makePrototypeChain(frame.ctx, global, capture, local);
@@ -162,29 +163,29 @@ public class SimpleDebugger implements Debugger {
                     .add(new JSONMap()
                         .set("type", "local")
                         .set("name", "Local Scope")
-                        .set("object", serializeObj(frame.ctx.environment, local))
+                        .set("object", serializeObj(frame.ctx, local))
                     )
                     .add(new JSONMap()
                         .set("type", "closure")
                         .set("name", "Closure")
-                        .set("object", serializeObj(frame.ctx.environment, capture))
+                        .set("object", serializeObj(frame.ctx, capture))
                     )
                     .add(new JSONMap()
                         .set("type", "global")
                         .set("name", "Global Scope")
-                        .set("object", serializeObj(frame.ctx.environment, global))
+                        .set("object", serializeObj(frame.ctx.extensions, global))
                     )
                     .add(new JSONMap()
                         .set("type", "other")
                         .set("name", "Value Stack")
-                        .set("object", serializeObj(frame.ctx.environment, valstack))
+                        .set("object", serializeObj(frame.ctx.extensions, valstack))
                     )
                 );
         }
     }
     private class ObjRef {
         public final ObjectValue obj;
-        public final Environment env;
+        public final Extensions ext;
         public final HashSet<String> heldGroups = new HashSet<>();
         public boolean held = true;
 
@@ -192,19 +193,19 @@ public class SimpleDebugger implements Debugger {
             return !held && heldGroups.size() == 0;
         }
 
-        public ObjRef(Environment env, ObjectValue obj) {
-            this.env = env;
+        public ObjRef(Extensions ext, ObjectValue obj) {
+            this.ext = ext;
             this.obj = obj;
         }
     }
 
     private static class RunResult {
-        public final Environment ctx;
+        public final Extensions ext;
         public final Object result;
         public final EngineException error;
 
-        public RunResult(Environment env, Object result, EngineException error) {
-            this.ctx = env;
+        public RunResult(Extensions ext, Object result, EngineException error) {
+            this.ext = ext;
             this.result = result;
             this.error = error;
         }
@@ -338,10 +339,10 @@ public class SimpleDebugger implements Debugger {
             .set("columnNumber", loc.start() - 1);
     }
 
-    private JSONMap serializeObj(Environment env, Object val, boolean byValue) {
+    private JSONMap serializeObj(Extensions env, Object val, boolean byValue) {
         val = Values.normalize(null, val);
         env = sanitizeEnvironment(env);
-        var ctx = env.context();
+        var ctx = Context.of(env);
 
         if (val == Values.NULL) {
             return new JSONMap()
@@ -400,7 +401,7 @@ public class SimpleDebugger implements Debugger {
             }
 
 
-            if (byValue) try { res.put("value", JSON.fromJs(env.context(), obj)); }
+            if (byValue) try { res.put("value", JSON.fromJs(env, obj)); }
             catch (Exception e) { }
 
             return res;
@@ -426,8 +427,8 @@ public class SimpleDebugger implements Debugger {
 
         throw new IllegalArgumentException("Unexpected JS object.");
     }
-    private JSONMap serializeObj(Environment env, Object val) {
-        return serializeObj(env, val, false);
+    private JSONMap serializeObj(Extensions ext, Object val) {
+        return serializeObj(ext, val, false);
     }
     private void addObjectGroup(String name, Object val) {
         if (val instanceof ObjectValue) {
@@ -466,11 +467,11 @@ public class SimpleDebugger implements Debugger {
         else return JSON.toJs(res);
     }
 
-    private JSONMap serializeException(Environment env, EngineException err) {
+    private JSONMap serializeException(Extensions ext, EngineException err) {
         String text = null;
 
         try {
-            text = Values.toString(env.context(), err.value);
+            text = Values.toString(Context.of(ext), err.value);
         }
         catch (EngineException e) {
             text = "[error while stringifying]";
@@ -478,7 +479,7 @@ public class SimpleDebugger implements Debugger {
 
         var res = new JSONMap()
             .set("exceptionId", nextId())
-            .set("exception", serializeObj(env, err.value))
+            .set("exception", serializeObj(ext, err.value))
             .set("text", text);
 
         return res;
@@ -539,8 +540,8 @@ public class SimpleDebugger implements Debugger {
         }
     }
 
-    private Environment sanitizeEnvironment(Environment env) {
-        var res = env.child();
+    private Extensions sanitizeEnvironment(Extensions ext) {
+        var res = ext.child();
 
         res.remove(EventLoop.KEY);
         res.remove(DebugContext.KEY);
@@ -552,12 +553,13 @@ public class SimpleDebugger implements Debugger {
     private RunResult run(DebugFrame codeFrame, String code) {
         if (codeFrame == null) return new RunResult(null, code, new EngineException("Invalid code frame!"));
         var engine = new Engine();
-        var env = codeFrame.frame.ctx.environment.copy();
+        var env = codeFrame.frame.ctx.extensions.copy();
 
-        env.global = new GlobalScope(codeFrame.local);
-        env.remove(EventLoop.KEY);
         env.remove(DebugContext.KEY);
+        env.remove(EventLoop.KEY);
+        env.remove(GlobalScope.KEY);
         env.add(EventLoop.KEY, engine);
+        env.add(GlobalScope.KEY, new GlobalScope(codeFrame.local));
 
         var awaiter = engine.pushMsg(false, env, new Filename("jscript", "eval"), code, codeFrame.frame.thisArg, codeFrame.frame.args);
 
@@ -569,12 +571,12 @@ public class SimpleDebugger implements Debugger {
         catch (SyntaxException e) { return new RunResult(env, null, EngineException.ofSyntax(e.toString())); }
     }
 
-    private ObjectValue vscodeAutoSuggest(Environment env, Object target, String query, boolean variable) {
+    private ObjectValue vscodeAutoSuggest(Extensions ext, Object target, String query, boolean variable) {
         var res = new ArrayValue();
         var passed = new HashSet<String>();
         var tildas = "~";
-        var ctx = env.context();
-        if (target == null) target = env.global;
+        var ctx = Context.of(ext);
+        if (target == null) target = GlobalScope.get(ext);
 
         for (var proto = target; proto != null && proto != Values.NULL; proto = Values.getPrototype(ctx, proto)) {
             for (var el : Values.getMembers(ctx, proto, true, true)) {
@@ -827,8 +829,8 @@ public class SimpleDebugger implements Debugger {
 
         if (group != null) addObjectGroup(group, res.result);
 
-        if (res.error != null) ws.send(msg.respond(new JSONMap().set("exceptionDetails", serializeException(res.ctx, res.error))));
-        else ws.send(msg.respond(new JSONMap().set("result", serializeObj(res.ctx, res.result))));
+        if (res.error != null) ws.send(msg.respond(new JSONMap().set("exceptionDetails", serializeException(res.ext, res.error))));
+        else ws.send(msg.respond(new JSONMap().set("result", serializeObj(res.ext, res.result))));
     }
 
     @Override public synchronized void releaseObjectGroup(V8Message msg) throws IOException {
@@ -851,8 +853,8 @@ public class SimpleDebugger implements Debugger {
     @Override public synchronized void getProperties(V8Message msg) throws IOException {
         var ref = idToObject.get(Integer.parseInt(msg.params.string("objectId")));
         var obj = ref.obj;
-        var env = ref.env;
-        var ctx = env.context();
+        var ext = ref.ext;
+        var ctx = Context.of(ext);
         var res = new JSONList();
         var own = true;
 
@@ -865,8 +867,8 @@ public class SimpleDebugger implements Debugger {
                         var prop = obj.properties.get(key);
 
                         propDesc.set("name", Values.toString(ctx, key));
-                        if (prop.getter != null) propDesc.set("get", serializeObj(env, prop.getter));
-                        if (prop.setter != null) propDesc.set("set", serializeObj(env, prop.setter));
+                        if (prop.getter != null) propDesc.set("get", serializeObj(ext, prop.getter));
+                        if (prop.setter != null) propDesc.set("set", serializeObj(ext, prop.setter));
                         propDesc.set("enumerable", obj.memberEnumerable(key));
                         propDesc.set("configurable", obj.memberConfigurable(key));
                         propDesc.set("isOwn", true);
@@ -874,7 +876,7 @@ public class SimpleDebugger implements Debugger {
                     }
                     else {
                         propDesc.set("name", Values.toString(ctx, key));
-                        propDesc.set("value", serializeObj(env, Values.getMember(ctx, obj, key)));
+                        propDesc.set("value", serializeObj(ext, Values.getMember(ctx, obj, key)));
                         propDesc.set("writable", obj.memberWritable(key));
                         propDesc.set("enumerable", obj.memberEnumerable(key));
                         propDesc.set("configurable", obj.memberConfigurable(key));
@@ -888,7 +890,7 @@ public class SimpleDebugger implements Debugger {
                 if (own) {
                     var protoDesc = new JSONMap();
                     protoDesc.set("name", "__proto__");
-                    protoDesc.set("value", serializeObj(env, proto == null ? Values.NULL : proto));
+                    protoDesc.set("value", serializeObj(ext, proto == null ? Values.NULL : proto));
                     protoDesc.set("writable", true);
                     protoDesc.set("enumerable", false);
                     protoDesc.set("configurable", false);
@@ -915,8 +917,8 @@ public class SimpleDebugger implements Debugger {
 
         var thisArgRef = idToObject.get(Integer.parseInt(msg.params.string("objectId")));
         var thisArg = thisArgRef.obj;
-        var env = thisArgRef.env;
-        var ctx = env.context();
+        var ext = thisArgRef.ext;
+        var ctx = Context.of(ext);
 
         while (true) {
             var start = src.lastIndexOf("//# sourceURL=");
@@ -939,20 +941,20 @@ public class SimpleDebugger implements Debugger {
             }
             else if (compare(src, VSCODE_CALL)) {
                 var func = (FunctionValue)(args.size() < 1 ? null : args.get(0));
-                ws.send(msg.respond(new JSONMap().set("result", serializeObj(env, func.call(ctx, thisArg)))));
+                ws.send(msg.respond(new JSONMap().set("result", serializeObj(ext, func.call(ctx, thisArg)))));
             }
             else if (compare(src, VSCODE_AUTOCOMPLETE)) {
                 var target = args.get(0);
                 if (target == null) target = thisArg;
-                res = vscodeAutoSuggest(env, target, Values.toString(ctx, args.get(1)), Values.toBoolean(args.get(2)));
+                res = vscodeAutoSuggest(ext, target, Values.toString(ctx, args.get(1)), Values.toBoolean(args.get(2)));
             }
             else {
                 ws.send(new V8Error("Please use well-known functions with callFunctionOn"));
                 return;
             }
-            ws.send(msg.respond(new JSONMap().set("result", serializeObj(env, res, byValue))));
+            ws.send(msg.respond(new JSONMap().set("result", serializeObj(ext, res, byValue))));
         }
-        catch (EngineException e) { ws.send(msg.respond(new JSONMap().set("exceptionDetails", serializeException(env, e)))); }
+        catch (EngineException e) { ws.send(msg.respond(new JSONMap().set("exceptionDetails", serializeException(ext, e)))); }
     }
 
     @Override public synchronized void runtimeEnable(V8Message msg) throws IOException {
diff --git a/src/java/me/topchetoeu/jscript/utils/interop/Arguments.java b/src/java/me/topchetoeu/jscript/utils/interop/Arguments.java
index 78d729f..4e8c2ff 100644
--- a/src/java/me/topchetoeu/jscript/utils/interop/Arguments.java
+++ b/src/java/me/topchetoeu/jscript/utils/interop/Arguments.java
@@ -3,14 +3,32 @@ package me.topchetoeu.jscript.utils.interop;
 import java.lang.reflect.Array;
 
 import me.topchetoeu.jscript.runtime.Context;
+import me.topchetoeu.jscript.runtime.Extensions;
+import me.topchetoeu.jscript.runtime.Key;
 import me.topchetoeu.jscript.runtime.values.NativeWrapper;
 import me.topchetoeu.jscript.runtime.values.Values;
 
-public class Arguments {
+public class Arguments implements Extensions {
     public final Object self;
     public final Object[] args;
     public final Context ctx;
 
+    @Override public <T> void add(Key<T> key, T obj) {
+        ctx.add(key, obj);
+    }
+    @Override public <T> T get(Key<T> key) {
+        return ctx.get(key);
+    }
+    @Override public boolean has(Key<?> key) {
+        return ctx.has(key);
+    }
+    @Override public boolean remove(Key<?> key) {
+        return ctx.remove(key);
+    }
+    @Override public Iterable<Key<?>> keys() {
+        return ctx.keys();
+    }
+
     public int n() {
         return args.length;
     }
diff --git a/src/java/me/topchetoeu/jscript/utils/interop/NativeWrapperProvider.java b/src/java/me/topchetoeu/jscript/utils/interop/NativeWrapperProvider.java
index 2b9c6e3..1099053 100644
--- a/src/java/me/topchetoeu/jscript/utils/interop/NativeWrapperProvider.java
+++ b/src/java/me/topchetoeu/jscript/utils/interop/NativeWrapperProvider.java
@@ -11,8 +11,9 @@ import java.util.stream.Collectors;
 
 import me.topchetoeu.jscript.common.Location;
 import me.topchetoeu.jscript.runtime.Context;
-import me.topchetoeu.jscript.runtime.Environment;
-import me.topchetoeu.jscript.runtime.WrapperProvider;
+import me.topchetoeu.jscript.runtime.Copyable;
+import me.topchetoeu.jscript.runtime.Extensions;
+import me.topchetoeu.jscript.runtime.Key;
 import me.topchetoeu.jscript.runtime.exceptions.EngineException;
 import me.topchetoeu.jscript.runtime.exceptions.InterruptException;
 import me.topchetoeu.jscript.runtime.values.FunctionValue;
@@ -21,7 +22,9 @@ import me.topchetoeu.jscript.runtime.values.ObjectValue;
 import me.topchetoeu.jscript.runtime.values.Symbol;
 import me.topchetoeu.jscript.runtime.values.Values;
 
-public class NativeWrapperProvider implements WrapperProvider {
+public class NativeWrapperProvider implements Copyable {
+    public static final Key<NativeWrapperProvider> KEY = new Key<>();
+
     private final HashMap<Class<?>, FunctionValue> constructors = new HashMap<>();
     private final HashMap<Class<?>, ObjectValue> prototypes = new HashMap<>();
     private final HashMap<Class<?>, ObjectValue> namespaces = new HashMap<>();
@@ -298,8 +301,8 @@ public class NativeWrapperProvider implements WrapperProvider {
             var parentConstr = getConstr(parent);
 
             if (parentProto != null && parentConstr != null) {
-                Values.setPrototype(Context.NULL, proto, parentProto);
-                Values.setPrototype(Context.NULL, constr, parentConstr);
+                Values.setPrototype(Extensions.EMPTY, proto, parentProto);
+                Values.setPrototype(Extensions.EMPTY, constr, parentConstr);
 
                 return;
             }
@@ -371,11 +374,13 @@ public class NativeWrapperProvider implements WrapperProvider {
         return null;
     }
 
-    @Override public WrapperProvider fork(Environment env) {
+    public NativeWrapperProvider copy() {
         var res = new NativeWrapperProvider();
+
         for (var pair : classToProxy.entrySet()) {
             res.set(pair.getKey(), pair.getValue());
         }
+
         return this;
     }
 
@@ -409,4 +414,8 @@ public class NativeWrapperProvider implements WrapperProvider {
     }
 
     public NativeWrapperProvider() { }
+
+    public static NativeWrapperProvider get(Extensions ext) {
+        return ext.get(KEY);
+    }
 }
diff --git a/src/java/me/topchetoeu/jscript/utils/modules/ModuleRepo.java b/src/java/me/topchetoeu/jscript/utils/modules/ModuleRepo.java
index b02af45..f7da8a0 100644
--- a/src/java/me/topchetoeu/jscript/utils/modules/ModuleRepo.java
+++ b/src/java/me/topchetoeu/jscript/utils/modules/ModuleRepo.java
@@ -25,7 +25,7 @@ public interface ModuleRepo {
 
             if (modules.containsKey(name)) return modules.get(name);
 
-            var env = ctx.environment.child();
+            var env = ctx.extensions.child();
             env.add(CWD, fs.normalize(name, ".."));
 
             var mod = new SourceModule(filename, src, env);
diff --git a/src/java/me/topchetoeu/jscript/utils/modules/SourceModule.java b/src/java/me/topchetoeu/jscript/utils/modules/SourceModule.java
index 993952d..4efd72a 100644
--- a/src/java/me/topchetoeu/jscript/utils/modules/SourceModule.java
+++ b/src/java/me/topchetoeu/jscript/utils/modules/SourceModule.java
@@ -2,22 +2,22 @@ package me.topchetoeu.jscript.utils.modules;
 
 import me.topchetoeu.jscript.common.Filename;
 import me.topchetoeu.jscript.runtime.Context;
-import me.topchetoeu.jscript.runtime.Environment;
+import me.topchetoeu.jscript.runtime.Extensions;
 
 public class SourceModule extends Module {
     public final Filename filename;
     public final String source;
-    public final Environment env;
+    public final Extensions ext;
 
     @Override
     protected Object onLoad(Context ctx) {
-        var res = new Context(env).compile(filename, source);
+        var res = new Context(ext).compile(filename, source);
         return res.call(ctx);
     }
 
-    public SourceModule(Filename filename, String source, Environment env) {
+    public SourceModule(Filename filename, String source, Extensions ext) {
         this.filename = filename;
         this.source = source;
-        this.env = env;
+        this.ext = ext;
     }
 }