Linter checks for extraneous dependencies

Summary: Added eslint rule "no-extraneous-imports" which disallow using modules which are not listed as dependencies in the corresponding package.json. Fixed a bunch of reported errors after the rule applied.

Reviewed By: passy

Differential Revision: D21186848

fbshipit-source-id: 0af9ac4b3fffdfd0ab7c23ae4ff12a3f5989d5e9

desktop/headless/package.json

@@ -0,0 +1,17 @@
+{
+  "name": "flipper-headless",
+  "private": true,
+  "version": "0.39.0",
+  "description": "Headless version of Flipper - Mobile development tool",
+  "productName": "Flipper Headless",
+  "author": "Facebook Inc",
+  "main": "index.tsx",
+  "license": "MIT",
+  "dependencies": {
+    "node-fetch": "^2.3.0",
+    "redux": "^4.0.0",
+    "remote-redux-devtools": "^0.5.16",
+    "ws": "^7.2.3",
+    "yargs": "^15.3.1"
+  }
+}