Added batch support

Author: paulkoeckdev

package.json

@@ -30,7 +30,6 @@
   },
   "homepage": "https://github.com/simonkoeck/code-execution-engine#readme",
   "dependencies": {
-    "command-exists": "^1.2.9",
     "unique-filename": "^1.1.1"
   }
 }

runners/win32/bat.bat

@@ -0,0 +1,2 @@
+@echo off
+%1

src/executor.ts

@@ -30,14 +30,10 @@ export default async function execute(
     throw Error("Your OS is not supported yet.");
   }
 
-  // Check if Command Exists
-  if (!commandExists(language)) {
-    throw new Error("This language is not installed on the machine");
-  }
-
   // Write File to temp folder
   var temppath: string = uniqueFilename(tmpdir());
   if (language == Language.C) temppath += ".c";
+  else if (language == Language.BATCH) temppath += ".bat";
   writeFileSync(temppath, input, { encoding: "utf-8" });
 
   // Command to execute runner

src/languages.ts

@@ -2,6 +2,7 @@ enum Language {
   PYTHON3 = "python3",
   C = "gcc",
   BASH = "bash",
+  BATCH = "bat"
 }
 
 export default Language;