chore(workflows): add LLVM installation for macOS

Author: tonyantony300

.github/workflows/publish.yml

@@ -230,6 +230,10 @@ jobs:
         shell: bash
         run: |
           set -eux
+          if [ "${{ matrix.platform }}" = "macos-latest" ]; then
+            brew install llvm
+            echo "CC=$(brew --prefix llvm)/bin/clang" >> "$GITHUB_ENV"
+          fi
           rustup target add wasm32-unknown-unknown
           cargo install wasm-bindgen-cli --version 0.2.126 --locked
 

scripts/build-wasm-bridge.js

@@ -75,6 +75,11 @@ const env = { ...process.env }
 const cc = resolveCc(env)
 if (cc) {
 	env.CC = cc
+} else if (process.platform === 'darwin') {
+	console.error(
+		'build-wasm-bridge: macOS needs LLVM clang for wasm32 (Apple clang cannot target wasm32-unknown-unknown). Install with: brew install llvm'
+	)
+	process.exit(1)
 }
 
 const wasmBridgeDir = path.join(root, 'wasm-bridge')