5 files changed, 58 insertions, 0 deletions
diff --git a/Userland/Libraries/LibWeb/Bindings/WindowObjectHelper.h b/Userland/Libraries/LibWeb/Bindings/WindowObjectHelper.h
index 7988bc1966..3faa49a98e 100644
--- a/Userland/Libraries/LibWeb/Bindings/WindowObjectHelper.h
+++ b/Userland/Libraries/LibWeb/Bindings/WindowObjectHelper.h
@@ -262,6 +262,8 @@
 #include <LibWeb/Bindings/SubmitEventConstructor.h>
 #include <LibWeb/Bindings/SubmitEventPrototype.h>
 #include <LibWeb/Bindings/TextConstructor.h>
+#include <LibWeb/Bindings/TextEncoderConstructor.h>
+#include <LibWeb/Bindings/TextEncoderPrototype.h>
 #include <LibWeb/Bindings/TextPrototype.h>
 #include <LibWeb/Bindings/UIEventConstructor.h>
 #include <LibWeb/Bindings/UIEventPrototype.h>
@@ -416,6 +418,7 @@
     ADD_WINDOW_OBJECT_INTERFACE(SVGPathElement)            \
     ADD_WINDOW_OBJECT_INTERFACE(SVGSVGElement)             \
     ADD_WINDOW_OBJECT_INTERFACE(Text)                      \
+    ADD_WINDOW_OBJECT_INTERFACE(TextEncoder)               \
     ADD_WINDOW_OBJECT_INTERFACE(UIEvent)                   \
     ADD_WINDOW_OBJECT_INTERFACE(URLSearchParams)           \
     ADD_WINDOW_OBJECT_INTERFACE(URL)                       \
diff --git a/Userland/Libraries/LibWeb/CMakeLists.txt b/Userland/Libraries/LibWeb/CMakeLists.txt
index 81dbfa84aa..cd37ce8d66 100644
--- a/Userland/Libraries/LibWeb/CMakeLists.txt
+++ b/Userland/Libraries/LibWeb/CMakeLists.txt
@@ -396,6 +396,7 @@ libweb_js_wrapper(DOM/ProcessingInstruction)
 libweb_js_wrapper(DOM/Range)
 libweb_js_wrapper(DOM/ShadowRoot)
 libweb_js_wrapper(DOM/Text)
+libweb_js_wrapper(Encoding/TextEncoder)
 libweb_js_wrapper(Geometry/DOMRect)
 libweb_js_wrapper(Geometry/DOMRectReadOnly)
 libweb_js_wrapper(HTML/CanvasRenderingContext2D)
diff --git a/Userland/Libraries/LibWeb/Encoding/TextEncoder.h b/Userland/Libraries/LibWeb/Encoding/TextEncoder.h
new file mode 100644
index 0000000000..b30d9264ce
--- /dev/null
+++ b/Userland/Libraries/LibWeb/Encoding/TextEncoder.h
@@ -0,0 +1,40 @@
+/*
+ * Copyright (c) 2021, Linus Groh <linusg@serenityos.org>
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#pragma once
+
+#include <AK/Forward.h>
+#include <AK/NonnullRefPtr.h>
+#include <AK/RefCounted.h>
+#include <LibJS/Forward.h>
+#include <LibWeb/Bindings/Wrappable.h>
+#include <LibWeb/Forward.h>
+
+namespace Web::Encoding {
+
+// https://encoding.spec.whatwg.org/#textencoder
+class TextEncoder
+    : public RefCounted<TextEncoder>
+    , public Bindings::Wrappable {
+public:
+    using WrapperType = Bindings::TextEncoderWrapper;
+
+    static NonnullRefPtr<TextEncoder> create()
+    {
+        return adopt_ref(*new TextEncoder());
+    }
+
+    static NonnullRefPtr<TextEncoder> create_with_global_object(Bindings::WindowObject&)
+    {
+        return TextEncoder::create();
+    }
+
+protected:
+    // https://encoding.spec.whatwg.org/#dom-textencoder
+    TextEncoder() = default;
+};
+
+}
diff --git a/Userland/Libraries/LibWeb/Encoding/TextEncoder.idl b/Userland/Libraries/LibWeb/Encoding/TextEncoder.idl
new file mode 100644
index 0000000000..09713478b7
--- /dev/null
+++ b/Userland/Libraries/LibWeb/Encoding/TextEncoder.idl
@@ -0,0 +1,9 @@
+[Exposed=(Window,Worker)]
+interface TextEncoder {
+    constructor();
+
+    // [NewObject] Uint8Array encode(optional USVString input = "");
+    // TextEncoderEncodeIntoResult encodeInto(USVString source, [AllowShared] Uint8Array destination);
+
+    // readonly attribute DOMString encoding;
+};
diff --git a/Userland/Libraries/LibWeb/Forward.h b/Userland/Libraries/LibWeb/Forward.h
index 7205762ba7..618a7cf1f8 100644
--- a/Userland/Libraries/LibWeb/Forward.h
+++ b/Userland/Libraries/LibWeb/Forward.h
@@ -109,6 +109,10 @@ template<typename ValueType>
 class ExceptionOr;
 }
 
+namespace Web::Encoding {
+class TextEncoder;
+}
+
 namespace Web::Geometry {
 class DOMRect;
 class DOMRectReadOnly;
@@ -432,6 +436,7 @@ class SVGGeometryElementWrapper;
 class SVGGraphicsElementWrapper;
 class SVGPathElementWrapper;
 class SVGSVGElementWrapper;
+class TextEncoderWrapper;
 class TextWrapper;
 class UIEventWrapper;
 class URLConstructor;