Introduce unstable, incomplete WASM support

src/wasm/response.rs

@@ -0,0 +1,73 @@
+use std::fmt;
+
+use http::{HeaderMap, StatusCode};
+
+/// A Response to a submitted `Request`.
+pub struct Response {
+    http: http::Response<web_sys::Response>,
+}
+
+impl Response {
+    pub(super) fn new(
+        res: http::Response<web_sys::Response>,
+        //url: Url,
+    ) -> Response {
+        Response {
+            http: res,
+        }
+    }
+
+    /// Get the `StatusCode` of this `Response`.
+    #[inline]
+    pub fn status(&self) -> StatusCode {
+        self.http.status()
+    }
+
+    /// Get the `Headers` of this `Response`.
+    #[inline]
+    pub fn headers(&self) -> &HeaderMap {
+        self.http.headers()
+    }
+
+    /// Get a mutable reference to the `Headers` of this `Response`.
+    #[inline]
+    pub fn headers_mut(&mut self) -> &mut HeaderMap {
+        self.http.headers_mut()
+    }
+
+    /* It might not be possible to detect this in JS?
+    /// Get the HTTP `Version` of this `Response`.
+    #[inline]
+    pub fn version(&self) -> Version {
+        self.http.version()
+    }
+    */
+
+    // pub async fn json()
+
+
+    /// Get the response text.
+    pub async fn text(self) -> crate::Result<String> {
+        let p = self.http.body().text()
+            .map_err(crate::error::wasm)
+            .map_err(crate::error::decode)?;
+        let js_val = super::promise::<wasm_bindgen::JsValue>(p)
+            .await
+            .map_err(crate::error::decode)?;
+        if let Some(s) = js_val.as_string() {
+            Ok(s)
+        } else {
+            Err(crate::error::decode("response.text isn't string"))
+        }
+    }
+}
+
+impl fmt::Debug for Response {
+    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+        f.debug_struct("Response")
+            //.field("url", self.url())
+            .field("status", &self.status())
+            .field("headers", self.headers())
+            .finish()
+    }
+}