Simplify simpleCheck method

Author: razor-x

lib/package-checker.js

@@ -16,13 +16,13 @@ const commandExists = cmd => {
 
 const simpleCheck = (cmd, match = null, fork = true) => async (pkgs = []) => {
   try {
-    if (fork) {
-      await Promise.all(
-        pkgs.map(pkg => exec(`${cmd} ${pkg}`))
-      )
-    } else {
-      await exec(`${cmd} ${pkgs.join(' ')}`)
-    }
+    const execCheck = arg => exec([cmd, arg].join(' '))
+
+    const check = fork
+      ? Promise.all(pkgs.map(execCheck))
+      : execCheck(pkgs.join(' '))
+
+    await check
     return true
   } catch (err) {
     if (match === null) return false