fix path for bsc

Author: bobzhang

bsc

@@ -3,7 +3,13 @@
 
 var child_process = require("child_process");
 var path = require("path");
-var exe = path.join(__dirname, process.platform, "bsc.exe");
+var exe = path.join(
+  __dirname,
+  process.platform === "darwin" && process.arch === "arm64"
+    ? process.platform + process.arch
+    : process.platform,
+  "bsc.exe"
+);
 var delegate_args = process.argv.slice(2);
 
 try {