nativescript-nodeify Failed to find module "os"

I've been receiving this error intermittently with the 'Cannot find module "file-system/file-system-access"' when trying to run tns run android:

Error: com.tns.NativeScriptException: Failed to find module: "os", relative to: app/tns_modules/
    com.tns.Module.resolvePathHelper(Module.java:159)
    com.tns.Module.resolvePath(Module.java:60)
    com.tns.Runtime.runModule(Native Method)
    com.tns.Runtime.runModule(Runtime.java:580)
    com.tns.Runtime.run(Runtime.java:574)
    com.tns.NativeScriptApplication.onCreate(NativeScriptApplication.java:17)
    android.app.Instrumentation.callApplicationOnCreate(Instrumentation.java:1013)
    android.app.ActivityThread.handleBindApplication(ActivityThread.java:4707)
    android.app.ActivityThread.-wrap1(ActivityThread.java)
    android.app.ActivityThread$H.handleMessage(ActivityThread.java:1405)
    android.os.Handler.dispatchMessage(Handler.java:102)
    android.os.Looper.loop(Looper.java:148)
    android.app.ActivityThread.main(ActivityThread.java:5417)
    java.lang.reflect.Method.invoke(Native Method)
    com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726)
    com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)
File: "<unknown>, line: 1, column: 265

I've followed your tutorial in your README on how to include AWSCognito:

require('nativescript-nodeify');
let AmazonCognitoIdentity = require('amazon-cognito-identity-js');

and here's my package.json:

{
  "description": "NativeScript Application",
  "license": "SEE LICENSE IN <your-license-filename>",
  "readme": "NativeScript Application",
  "repository": "<fill-your-repository-here>",
  "nativescript": {
    "id": "org.nativescript.chspatientapp",
    "nodeify": {
      "package-dependencies": {
        "aws-sdk": [
          {
            "xml/browser_parser": "xml/node_parser"
          }
        ]
      }
    },
    "tns-android": {
      "version": "2.5.0"
    },
    "tns-ios": {
      "version": "2.5.0"
    }
  },
  "dependencies": {
    "@angular/common": "2.3.1",
    "@angular/compiler": "2.3.1",
    "@angular/core": "2.3.1",
    "@angular/forms": "2.3.1",
    "@angular/http": "2.3.1",
    "@angular/platform-browser": "2.3.1",
    "@angular/platform-browser-dynamic": "2.3.1",
    "@angular/router": "3.3.1",
    "amazon-cognito-identity-js": "^1.16.0",
    "moment": "^2.17.1",
    "nativescript-angular": "1.3.0",
    "nativescript-bluetooth": "^1.1.4",
    "nativescript-local-notifications": "^1.2.1",
    "nativescript-nodeify": "^0.5.5",
    "nativescript-oauth": "^1.2.1",
    "nativescript-theme-core": "^0.2.1",
    "reflect-metadata": "~0.1.8",
    "rxjs": "5.0.0-rc.4",
    "tns-core-modules": "^2.5.0"
  },
  "devDependencies": {
    "babel-traverse": "6.21.0",
    "babel-types": "6.21.0",
    "babylon": "6.15.0",
    "lazy": "1.0.11",
    "nativescript-dev-android-snapshot": "^0.*.*",
    "nativescript-dev-typescript": "^0.3.2",
    "typescript": "~2.0.10",
    "zone.js": "~0.7.2"
  }
}

running: Node v6.9.4 {N} v2.5.0

Kind of at a loss here. Any help would be greatly appreciated.