fix the web platform

packages/web/src/launch.rs

@@ -0,0 +1,22 @@
+//! This module contains the `launch` function, which is the main entry point for dioxus web
+
+pub use crate::Config;
+use dioxus_core::prelude::*;
+use std::any::Any;
+
+/// Launch the web application with the given root component, context and config
+///
+/// For a builder API, see `LaunchBuilder` defined in the `dioxus` crate.
+pub fn launch(
+    root: fn() -> Element,
+    contexts: Vec<Box<dyn Fn() -> Box<dyn Any>>>,
+    platform_config: Config,
+) {
+    wasm_bindgen_futures::spawn_local(async move {
+        let mut vdom = VirtualDom::new(root);
+        for context in contexts {
+            vdom.insert_any_root_context(context());
+        }
+        crate::run(vdom, platform_config).await;
+    });
+}