Include fs-extra methods

package.json

@@ -38,6 +38,7 @@
   },
   "dependencies": {
     "async": "^1.5.2",
+    "fs-extra": "^9.1.0",
     "mkdirp": "^0.5.1",
     "rimraf": "^2.5.2",
     "underscore-plus": "1.x"

src/fs-plus.mjs

@@ -1,4 +1,5 @@
 import fs from 'fs';
+import fsExtra from 'fs-extra';
 import Module from 'module';
 import path from 'path';
 
@@ -829,6 +830,8 @@ module.exports = new Proxy({}, {
   get(target, key) {
     if (fsPlus.hasOwnProperty(key)) {
       return fsPlus[key];
+    } else if (fsExtra.hasOwnProperty(key)) {
+      return fsExtra[key];
     } else {
       return fs[key];
     }