Check Node.js version (#857)

ark120202 · web-flow · commit 918726f1dc91 · 2020-04-29T15:27:22.000+02:00
diff --git a/src/tstl.ts b/src/tstl.ts
@@ -204,6 +204,20 @@ function updateWatchCompilationHost(
     };
 }
 
+function checkNodeVersion(): void {
+    const [major, minor] = process.version
+        .slice(1)
+        .split(".")
+        .map(Number);
+    const isValid = major > 12 || (major === 12 && minor >= 13);
+    if (!isValid) {
+        console.error(`TypeScriptToLua requires Node.js >=12.13.0, the current version is ${process.version}`);
+        process.exit(1);
+    }
+}
+
+checkNodeVersion();
+
 if (ts.sys.setBlocking) {
     ts.sys.setBlocking();
 }
