fix main build

jupyterlab/tsconfig.json

@@ -9,7 +9,7 @@
     "target": "ES5",
     "outDir": "./build",
     "lib": ["ES5", "ES2015.Collection", "ES2015.Promise", "DOM"],
-    "types": ["node"],
+    "types": ["node", "text-encoding"],
     "baseUrl": ".",
     "paths": {
       "@jupyterlab/*": ["../packages/*/src"]

packages/services/src/contents/index.ts

@@ -1,9 +1,6 @@
 // Copyright (c) Jupyter Development Team.
 // Distributed under the terms of the Modified BSD License.
 
-import * as posix
- from 'path-posix';
-
 import {
   JSONObject
 } from '@phosphor/coreutils';