fix(compiler@other): 🧵 default to 4 threads when there is no availabl…

…e CPU info

This fix is for Termux Android when os.cpus() is not giving any CPU info. os.cpu() works but only ran on proot-distro.

src/compiler/index.ts

@@ -20,7 +20,8 @@ import type {
   PNGOptions,
 } from "./config/config.d.ts";
 
-const threads = cpus().length;
+const availCPUs = cpus().length;
+const threads = availCPUs === 0 ? 4 : availCPUs;
 
 interface FinalStats {
   compileTime: number;