fix wasm compilation

probably doesn't run correctly

Author: hymm

crates/bevy_tasks/src/lib.rs

@@ -15,14 +15,16 @@ pub use task_pool::{Scope, TaskPool, TaskPoolBuilder};
 #[cfg(target_arch = "wasm32")]
 mod single_threaded_task_pool;
 #[cfg(target_arch = "wasm32")]
-pub use single_threaded_task_pool::{Scope, TaskPool, TaskPoolBuilder};
+pub use single_threaded_task_pool::{Scope, TaskPool, TaskPoolBuilder, ThreadExecutor};
 
 mod usages;
 #[cfg(not(target_arch = "wasm32"))]
 pub use usages::tick_global_task_pools_on_main_thread;
 pub use usages::{AsyncComputeTaskPool, ComputeTaskPool, IoTaskPool};
 
+#[cfg(not(target_arch = "wasm32"))]
 mod main_thread_executor;
+#[cfg(not(target_arch = "wasm32"))]
 pub use main_thread_executor::ThreadExecutor;
 
 mod iter;

crates/bevy_tasks/src/single_threaded_task_pool.rs

@@ -9,6 +9,16 @@ use std::{
 #[derive(Debug, Default, Clone)]
 pub struct TaskPoolBuilder {}
 
+/// dummy struct for wasm
+#[derive(Default)]
+pub struct ThreadExecutor;
+impl ThreadExecutor {
+    /// creates a new `ThreadExecutor`
+    pub fn new() -> Self {
+        Self
+    }
+}
+
 impl TaskPoolBuilder {
     /// Creates a new TaskPoolBuilder instance
     pub fn new() -> Self {
@@ -62,7 +72,7 @@ impl TaskPool {
     /// to spawn tasks. This function will await the completion of all tasks before returning.
     ///
     /// This is similar to `rayon::scope` and `crossbeam::scope`
-    pub fn scope<'env, F, T>(&self, f: F) -> Vec<T>
+    pub fn scope<'env, F, T>(&self, _thread_executor: Option<Arc<ThreadExecutor>>, f: F) -> Vec<T>
     where
         F: for<'scope> FnOnce(&'env mut Scope<'scope, 'env, T>),
         T: Send + 'static,