feat: Allow instantiating an UploadPart from its constituent parts (#552

)

* feat: Allow instantiating an UploadPart from its constituent parts

* fix: Drop promises

* fix for reflect calls. tested and working.

* cargo fmt

---------

Co-authored-by: Kevin Flansburg <kevin.flansburg@gmail.com>

worker/src/r2/mod.rs

@@ -329,6 +329,20 @@ pub struct UploadedPart {
 }
 
 impl UploadedPart {
+    pub fn new(part_number: u16, etag: String) -> Self {
+        let obj = js_sys::Object::new();
+        Reflect::set(
+            &obj,
+            &JsValue::from_str("partNumber"),
+            &JsValue::from_f64(part_number as f64),
+        )
+        .unwrap();
+        Reflect::set(&obj, &JsValue::from_str("etag"), &JsValue::from_str(&etag)).unwrap();
+
+        let val: JsValue = obj.into();
+        Self { inner: val.into() }
+    }
+
     pub fn part_number(&self) -> u16 {
         self.inner.part_number().unwrap()
     }