Implement `FormData` (#2051)

* Backport std::forward change

* Implement `FormData`

* Fix io_darwin headers issue

* Implement `Blob` support in FormData

* Add test for file upload

* Fix bug with Blob not reading Content-Type

* Finish implementing FormData

* Add FormData to types

---------

Co-authored-by: Jarred Sumner <709451+Jarred-Sumner@users.noreply.github.com>

1 files changed, 68 insertions, 0 deletions

diff --git a/src/bun.js/bindings/blob.h b/src/bun.js/bindings/blob.h
new file mode 100644
index 000000000..83d6ff3af
--- /dev/null
+++ b/src/bun.js/bindings/blob.h
@@ -0,0 +1,68 @@
+#pragma once
+
+#include "root.h"
+#include "JSDOMGlobalObject.h"
+
+namespace WebCore {
+
+extern "C" void* Blob__dupeFromJS(JSC::EncodedJSValue impl);
+extern "C" void* Blob__dupe(void* impl);
+extern "C" void Blob__destroy(void* impl);
+
+class Blob : public RefCounted<Blob> {
+public:
+    void* impl()
+    {
+        return m_impl;
+    }
+
+    static RefPtr<Blob> create(JSC::JSValue impl)
+    {
+        void* implPtr = Blob__dupeFromJS(JSValue::encode(impl));
+        if (!implPtr)
+            return nullptr;
+
+        return adoptRef(*new Blob(implPtr));
+    }
+
+    static RefPtr<Blob> create(void* ptr)
+    {
+        void* implPtr = Blob__dupe(ptr);
+        if (!implPtr)
+            return nullptr;
+
+        return adoptRef(*new Blob(implPtr));
+    }
+
+    ~Blob()
+    {
+        Blob__destroy(m_impl);
+    }
+
+    String fileName()
+    {
+        return m_fileName;
+    }
+
+    void setFileName(String fileName)
+    {
+        m_fileName = fileName;
+    }
+
+private:
+    Blob(void* impl, String fileName = String())
+    {
+        m_impl = impl;
+        m_fileName = fileName;
+    }
+
+    void* m_impl;
+    String m_fileName;
+};
+
+JSC::JSValue toJS(JSC::JSGlobalObject*, JSDOMGlobalObject*, Blob&);
+inline JSC::JSValue toJS(JSC::JSGlobalObject* lexicalGlobalObject, JSDOMGlobalObject* globalObject, Blob* impl) { return impl ? toJS(lexicalGlobalObject, globalObject, *impl) : JSC::jsNull(); }
+JSC::JSValue toJSNewlyCreated(JSC::JSGlobalObject*, JSDOMGlobalObject*, Ref<Blob>&&);
+inline JSC::JSValue toJSNewlyCreated(JSC::JSGlobalObject* lexicalGlobalObject, JSDOMGlobalObject* globalObject, RefPtr<Blob>&& impl) { return impl ? toJSNewlyCreated(lexicalGlobalObject, globalObject, impl.releaseNonNull()) : JSC::jsNull(); }
+
+}