LibWeb: Implement a very basic version of TextDecoder

We had a very basic implementation of TextEncoder, let's add a
TextDecoder next to that :^)

1 files changed, 13 insertions, 0 deletions

diff --git a/Userland/Libraries/LibWeb/Encoding/TextDecoder.idl b/Userland/Libraries/LibWeb/Encoding/TextDecoder.idl
new file mode 100644
index 0000000000..acded928c7
--- /dev/null
+++ b/Userland/Libraries/LibWeb/Encoding/TextDecoder.idl
@@ -0,0 +1,13 @@
+[Exposed=(Window,Worker)]
+interface TextDecoder {
+    // FIXME: 'optional TextDecoderOptions options = {}'
+    constructor(optional DOMString label = "utf-8");
+
+    // FIXME: [AllowShared] on the first parameter.
+    // FIXME: 'optional TextDecodeOptions options = {}'
+    USVString decode(optional BufferSource input);
+
+    readonly attribute DOMString encoding;
+    readonly attribute boolean fatal;
+    readonly attribute boolean ignoreBOM;
+};