flow like the river

VISUALIZACION/node_modules/parcel-bundler/lib/utils/promisify.js

@@ -0,0 +1,15 @@
+"use strict";
+
+module.exports = function (fn) {
+  return function (...args) {
+    return new Promise(function (resolve, reject) {
+      fn(...args, function (err, ...res) {
+        if (err) return reject(err);
+
+        if (res.length === 1) return resolve(res[0]);
+
+        resolve(res);
+      });
+    });
+  };
+};