bugfix: Fix wasm32 compile errors

Signed-off-by: John Nunley <dev@notgull.net>

.github/workflows/ci.yml

@@ -37,12 +37,14 @@ jobs:
       - uses: actions/checkout@v4
       - name: Install Rust
         run: rustup update ${{ matrix.rust }} && rustup default ${{ matrix.rust }}
+      - run: rustup target add wasm32-unknown-unknown
       - run: cargo build --all --all-features --all-targets
         if: startsWith(matrix.rust, 'nightly')
       - name: Run cargo check (without dev-dependencies to catch missing feature flags)
         if: startsWith(matrix.rust, 'nightly')
         run: cargo check -Z features=dev_dep
       - run: cargo test
+      - run: cargo check --all --all-features --target wasm32-unknown-unknown
 
   msrv:
     runs-on: ubuntu-latest

src/lib.rs

@@ -270,7 +270,18 @@ impl<'a> Executor<'a> {
 
     /// Returns a reference to the inner state.
     fn state(&self) -> &Arc<State> {
-        self.state.get_or_init_blocking(|| Arc::new(State::new()))
+        #[cfg(not(target_family = "wasm"))]
+        {
+            return self.state.get_or_init_blocking(|| Arc::new(State::new()));
+        }
+
+        // Some projects use this on WASM for some reason. In this case get_or_init_blocking
+        // doesn't work. Just poll the future once and panic if there is contention.
+        #[cfg(target_family = "wasm")]
+        future::block_on(future::poll_once(
+            self.state.get_or_init(|| async { Arc::new(State::new()) }),
+        ))
+        .expect("encountered contention on WASM")
     }
 }