Backport: Make seed compile with wasm_bindgen >= v0.2.81

Author: DTM9025

src/app.rs

@@ -2,7 +2,7 @@ use crate::browser::dom::virtual_dom_bridge;
 use crate::browser::{
     service::routing,
     url,
-    util::{self, window, ClosureNew},
+    util::{self, window},
     NextTick, Url,
 };
 use crate::virtual_dom::{patch, El, EventHandlerManager, Mailbox, Node, Tag, View};

src/app/builder.rs

@@ -88,10 +88,6 @@ pub trait InitAPIData {
 }
 
 // TODO Remove when removing the other `InitAPI`s.
-#[deprecated(
-    since = "0.5.0",
-    note = "Used for compatibility with old Init API. Use `BeforeAfterInitAPI` together with `BeforeMount` and `AfterMount` instead."
-)]
 impl<
         Ms: 'static,
         Mdl: 'static,
@@ -185,10 +181,6 @@ impl<Ms: 'static, Mdl: 'static + Default, ElC: 'static + View<Ms>, GMs: 'static>
     }
 }
 
-#[deprecated(
-    since = "0.5.0",
-    note = "Used for compatibility with old Init API. Use `BeforeAfterInitAPI` together with `BeforeMount` and `AfterMount` instead."
-)]
 impl<MP, II> InitAPIData for MountPointInitInitAPI<MP, II> {
     type IntoAfterMount = UndefinedAfterMount;
     type IntoInit = II;

src/browser/service/routing.rs

@@ -1,6 +1,6 @@
 use super::super::{
     url,
-    util::{self, ClosureNew},
+    util,
     Url,
 };
 use std::convert::{identity, TryFrom, TryInto};
@@ -110,8 +110,9 @@ pub fn setup_link_listener<Ms>(update: impl Fn(Ms) + 'static, routes: fn(Url) ->
 where
     Ms: 'static,
 {
-    let closure = Closure::new(move |event: web_sys::Event| {
-        event.target()
+    let closure: Closure<dyn Fn(web_sys::Event) -> _> =
+        Closure::new(move |event: web_sys::Event| {
+            event.target()
             .and_then(|et| et.dyn_into::<web_sys::Element>().ok())
             .and_then(|el| el.closest("[href]").ok())
             .and_then(identity)  // Option::flatten not stable (https://github.com/rust-lang/rust/issues/60258)

src/browser/util.rs

@@ -273,25 +273,6 @@ pub fn set_checked(target: &web_sys::EventTarget, value: bool) -> Result<(), &'s
     Err("Only `HtmlInputElement` and `HtmlMenuItemElement` can be used in function `set_checked`.")
 }
 
-// @TODO: Delete once `Closure::new` is stable
-// https://rustwasm.github.io/wasm-bindgen/api/wasm_bindgen/closure/struct.Closure.html
-/// Prevent repetition when wrapping closures.
-pub trait ClosureNew<T> {
-    #[allow(clippy::new_ret_no_self)]
-    fn new(inner: impl FnMut(T) + 'static) -> Closure<dyn FnMut(T)>
-    where
-        T: wasm_bindgen::convert::FromWasmAbi + 'static;
-}
-impl<T> ClosureNew<T> for Closure<T> {
-    #[allow(clippy::new_ret_no_self)]
-    fn new(inner: impl FnMut(T) + 'static) -> Closure<dyn FnMut(T)>
-    where
-        T: wasm_bindgen::convert::FromWasmAbi + 'static,
-    {
-        Closure::wrap(Box::new(inner))
-    }
-}
-
 /// Convenience function for logging to the web browser's console.  See also
 /// the log! macro, which is more flexible.
 #[cfg(use_nightly)]

src/lib.rs

@@ -91,7 +91,7 @@ pub mod prelude {
             ev, input_ev, keyboard_ev, mouse_ev, pointer_ev, raw_ev, simple_ev,
         },
         browser::util::{
-            request_animation_frame, ClosureNew, RequestAnimationFrameHandle,
+            request_animation_frame, RequestAnimationFrameHandle,
             RequestAnimationFrameTime,
         },
         browser::Url,

src/virtual_dom/event_handler_manager/listener.rs

@@ -1,4 +1,3 @@
-use crate::browser::util::ClosureNew;
 use crate::virtual_dom::{Ev, EventHandler, Mailbox};
 use enclose::enc;
 use std::{