feat: Revert #365

Author: jcs090218

src/util.js

@@ -146,7 +146,7 @@ function setup_env() {
 }
 
 /**
- * Handle global options
+ * Handle global options.
  *
  * @param { Object } argv - is a parsed object from yargs.
  */
@@ -212,14 +212,6 @@ async function e_call(argv, script, ...args) {
     return;
   }
 
-  if (argv.verbose !== undefined &&
-    // this must exclude NaN -- yargs default value for numeric type
-    !(argv.verbose >= 0 && argv.verbose <= 5)) {
-    console.warn("invalid value for --verbose option: must be a number between 0 and 5");
-    process.exit(1);
-    return;
-  }
-
   return new Promise(resolve => {
     let _path = el_script(script);