Resolved validate bug on Windows (#87)

Author: yradsmikham

src/commands/infra/validate.ts

@@ -1,6 +1,7 @@
 import child_process from "child_process";
 import commander from "commander";
 import emoji from "node-emoji";
+import shelljs from "shelljs";
 import { promisify } from "util";
 import { Config } from "../../config";
 import { logger } from "../../logger";
@@ -71,10 +72,8 @@ export const validatePrereqs = async (
   }
   // Validate executables in PATH
   for (const i of executables) {
-    try {
-      await promisify(child_process.exec)("which " + i);
-      config.infra.checks[i] = true;
-    } catch (err) {
+    if (!shelljs.which(i)) {
+      config.infra.checks[i] = false;
       if (globalInit === true) {
         logger.warn(i + " not installed.");
       } else {
@@ -83,7 +82,8 @@ export const validatePrereqs = async (
         );
         return false;
       }
-      config.infra.checks[i] = false;
+    } else {
+      config.infra.checks[i] = true;
     }
   }
   return true;