flow like the river

BACK_BACK/node_modules/cosmiconfig/dist/getPropertyByPath.js

@@ -0,0 +1,23 @@
+//      
+'use strict';
+
+// Resolves property names or property paths defined with period-delimited
+// strings or arrays of strings. Property names that are found on the source
+// object are used directly (even if they include a period).
+// Nested property names that include periods, within a path, are only
+// understood in array paths.
+function getPropertyByPath(source        , path                        )      {
+  if (typeof path === 'string' && source.hasOwnProperty(path)) {
+    return source[path];
+  }
+
+  const parsedPath = typeof path === 'string' ? path.split('.') : path;
+  return parsedPath.reduce((previous, key) => {
+    if (previous === undefined) {
+      return previous;
+    }
+    return previous[key];
+  }, source);
+}
+
+module.exports = getPropertyByPath;