Preserving the options passed into filterOptions method

Author: mahsa shadi

__tests__/vfs.js

@@ -79,7 +79,7 @@ describe('VFS', () => {
       .toBeInstanceOf(ArrayBuffer);
   });
 
-  test('writefile - blob', () => {
+  test('#writefile - blob', () => {
     return expect(call('writefile', 'null:/filename', new Blob()))
       .resolves
       .toBe(-1);

src/vfs.js

@@ -75,10 +75,11 @@ const handleDirectoryList = (path, options) => result =>
     }));
 
 // Returns a new "options" object without properties from "ignore"
-const filterOptions = (ignore, options) => {
-  ignore.forEach(item => delete options[item]);
-  return options;
-};
+const filterOptions = (ignore, options) => Object.fromEntries(
+  Object
+    .entries(options)
+    .filter(([k]) => !ignore.includes(k))
+);
 
 /**
  * Read a directory