diff --git a/src/core/bootstrap.js b/src/core/bootstrap.js
index ef008fe..fd55af0 100644
--- a/src/core/bootstrap.js
+++ b/src/core/bootstrap.js
@@ -8,10 +8,21 @@ Logger.useDefaults()
 
 // print header to console in browser environment
 if (runtime.isBrowser) {
-  console.log(homepage+' '+version+' (@'+GIT_BRANCH+' #'+GIT_COMMIT.substr(0,7)+' '+BUILD_DATE+')' )
+  console.log(
+    homepage +
+      ' ' +
+      version +
+      ' (@' +
+      GIT_BRANCH +
+      ' #' +
+      GIT_COMMIT.substr(0, 7) +
+      ' ' +
+      BUILD_DATE +
+      ')'
+  )
 }
 
 // global dependencies
 
 // three.js
-if (runtime.isNode) global.THREE = require('three')
\ No newline at end of file
+if (runtime.isNode) global.THREE = runtime.require('three')
diff --git a/src/core/polyfills.js b/src/core/polyfills.js
index 1f4e5e6..2ce1962 100644
--- a/src/core/polyfills.js
+++ b/src/core/polyfills.js
@@ -97,7 +97,7 @@ if (runtime.isBrowser) {
 
   // node: use module
   global.performance = {
-    now: require('performance-now')
+    now: runtime.require('performance-now')
   }
 
 }
\ No newline at end of file
diff --git a/src/core/runtime.js b/src/core/runtime.js
index 98776c4..33f46dd 100644
--- a/src/core/runtime.js
+++ b/src/core/runtime.js
@@ -10,6 +10,10 @@ var isNode = !!(
   && typeof process !== 'undefined'
   && Object.prototype.toString.call(process) === '[object process]'
 )
+// detect react native environment
+var isReactNative = !!(
+  typeof navigator !== 'undefined' && navigator.product === 'ReactNative'
+)
 var isBrowser = !isNode && typeof window !== 'undefined' && Object.prototype.toString.call(window) === '[object Window]'
 // detect whether webgl is available
 var webGlInfo = getWebGlInfo()
@@ -26,6 +30,7 @@ var runtime = {
 
   isDebugMode: false,
   isNode: isNode,
+  isReactNative: isReactNative,
 
   // browser specific
 
@@ -50,10 +55,12 @@ var runtime = {
     homepage: packageJson.homepage,
     githubRepository: packageJson.repository,
     gitBranchName: GIT_BRANCH,
-    gitCommitHash: GIT_COMMIT.substr(0,7),
+    gitCommitHash: GIT_COMMIT.substr(0, 7),
     buildDate: BUILD_DATE,
     license: packageJson.license
-  }
+  },
+
+  require: getDynamicRequire()
 
 }
 
@@ -65,6 +72,11 @@ function assertBrowser(message) {
   if (!isBrowser) throw (message || 'Sorry this feature requires a browser environment.')
 }
 
+// work around for react-native's metro bundler dynamic require check, see https://github.com/facebook/metro/issues/65
+function getDynamicRequire() {
+  return typeof require !== 'undefined' ? require.bind(require) : null
+}
+
 function getWebGlInfo () {
 
   var canvas = typeof document !== 'undefined' ? document.createElement('canvas') : null
diff --git a/src/utils/file/gzip.js b/src/utils/file/gzip.js
index 6dfb1a3..cd3958d 100644
--- a/src/utils/file/gzip.js
+++ b/src/utils/file/gzip.js
@@ -74,9 +74,9 @@ function deflateFile (file) {
 // helpers
 
 function loadDeflateLib () {
-  return runtime.isBrowser ? fetchScript(PAKO_LIB.deflate.url) : Promise.resolve(require(PAKO_LIB.deflate.module))
+  return runtime.isBrowser ? fetchScript(PAKO_LIB.deflate.url) : Promise.resolve(runtime.require(PAKO_LIB.deflate.module))
 }
 
 function loadInflateLib () {
-  return runtime.isBrowser ? fetchScript(PAKO_LIB.inflate.url) : Promise.resolve(require(PAKO_LIB.inflate.module))
+  return runtime.isBrowser ? fetchScript(PAKO_LIB.inflate.url) : Promise.resolve(runtime.require(PAKO_LIB.inflate.module))
 }
\ No newline at end of file
diff --git a/src/utils/io/fetch.js b/src/utils/io/fetch.js
index 9c92f40..6331ca6 100644
--- a/src/utils/io/fetch.js
+++ b/src/utils/io/fetch.js
@@ -3,7 +3,9 @@ import runtime from '../../core/runtime.js'
 export default (function(){
 
   if (runtime.isNode) {
-    return require('node-fetch')
+    // overwrite whatwg-fetch polyfill
+    global.fetch = runtime.require('node-fetch')
+    return global.fetch
   } else if (typeof fetch !== 'undefined') {
     return fetch
   } else {
diff --git a/src/utils/io/form-data.js b/src/utils/io/form-data.js
index 8b9718c..b75a615 100644
--- a/src/utils/io/form-data.js
+++ b/src/utils/io/form-data.js
@@ -2,14 +2,14 @@ import runtime from '../../core/runtime.js'
 
 var FormData_
 if (runtime.isNode) {
-  FormData_ = require('form-data')
+  FormData_ = runtime.require('form-data')
 } else if (typeof FormData !== 'undefined') {
   FormData_ = FormData
 } else {
   console.warn('Missing FormData API.')
-  FormData_ = function FormDataError () {
+  FormData_ = function FormDataError() {
     throw new Error('Missing FormData API.')
   }
 }
 
-export default FormData_
\ No newline at end of file
+export default FormData_
diff --git a/test/aframe/component/architecture-toolkit/floor.js b/test/aframe/component/architecture-toolkit/floor.js
index b9d3f25..ec05d90 100644
--- a/test/aframe/component/architecture-toolkit/floor.js
+++ b/test/aframe/component/architecture-toolkit/floor.js
@@ -2,7 +2,7 @@ import floor from '../../../../src/aframe/component/architecture-toolkit/floor.j
 import applyDefaults from '../../../../src/scene/structure/apply-defaults.js';
 
 // mock runtime module to prevent from tests blowing up
-jest.mock('../../../../src/core/runtime.js', () => ({isBrowser: false, isNode: true}))
+jest.mock('../../../../src/core/runtime.js', () => ({isBrowser: false, isNode: true, require: require}))
 
 test('get floor data3d', () => {
   const el3d = applyDefaults({type: 'floor'})
diff --git a/test/aframe/component/architecture-toolkit/kitchen.js b/test/aframe/component/architecture-toolkit/kitchen.js
index edd066f..38f3c56 100644
--- a/test/aframe/component/architecture-toolkit/kitchen.js
+++ b/test/aframe/component/architecture-toolkit/kitchen.js
@@ -2,11 +2,10 @@ import kitchen from '../../../../src/aframe/component/architecture-toolkit/kitch
 import applyDefaults from '../../../../src/scene/structure/apply-defaults.js';
 
 // mock runtime module to prevent from tests blowing up
-jest.mock('../../../../src/core/runtime.js', () => ({isBrowser: false, isNode: true}))
+jest.mock('../../../../src/core/runtime.js', () => ({isBrowser: false, isNode: true, require: require }))
 
 test('get kitchen data3d', async () => {
   let el3d = applyDefaults({type: 'kitchen'})
-
   kitchen.attributes = el3d
   kitchen.materials = {}
   // kitchen mesh generation is async because of external dependencies
diff --git a/test/furniture/search.js b/test/furniture/search.js
index 633367f..efb6e6f 100644
--- a/test/furniture/search.js
+++ b/test/furniture/search.js
@@ -3,7 +3,7 @@ import getInfo from '../../src/furniture/get-info'
 import get from '../../src/furniture/get'
 
 // mock runtime module to prevent from tests blowing up
-jest.mock('../../src/core/runtime.js', () => ({isBrowser: false, isNode: true}))
+jest.mock('../../src/core/runtime.js', () => ({isBrowser: false, isNode: true, require: require}))
 
 test('Furniture: search for chairs', async () => {
   const result = await search('chair')
diff --git a/test/scene/structure/get.js b/test/scene/structure/get.js
index e353948..14fdd4e 100644
--- a/test/scene/structure/get.js
+++ b/test/scene/structure/get.js
@@ -1,7 +1,7 @@
 import getStructure from '../../../src/scene/structure/get'
 
 // mock runtime module to prevent from tests blowing up
-jest.mock('../../../src/core/runtime.js', () => ({isBrowser: false, isNode: true}))
+jest.mock('../../../src/core/runtime.js', () => ({isBrowser: false, isNode: true, require: require}))
 
 test('Scene: get sceneStructure form id', async () => {
   const id = '5a281187-475a-4613-8fa5-a2e92af9914d'
diff --git a/test/scene/structure/to-aframe-elements.js b/test/scene/structure/to-aframe-elements.js
index 68f86ad..a7163e1 100644
--- a/test/scene/structure/to-aframe-elements.js
+++ b/test/scene/structure/to-aframe-elements.js
@@ -5,7 +5,8 @@ import { getAttributes, parseCameraBookmarks } from '../../../src/scene/structur
 jest.mock('../../../src/core/runtime.js', () => ({
   isBrowser: false, 
   assertBrowser: () => {}, 
-  isNode: true
+  isNode: true,
+  require: require
 }))
 
 test('sceneStructure to a-entity', () => {
diff --git a/test/staging/get-furnishings.js b/test/staging/get-furnishings.js
index 68964bd..76e3259 100644
--- a/test/staging/get-furnishings.js
+++ b/test/staging/get-furnishings.js
@@ -5,7 +5,7 @@ import {
 } from '../../src/staging/get-furnishings'
 
 // mock runtime module to prevent from tests blowing up
-jest.mock('../../src/core/runtime.js', () => ({isBrowser: false, isNode: true}))
+jest.mock('../../src/core/runtime.js', () => ({isBrowser: false, isNode: true, require: require}))
 
 test('normalize sceneStructure input for home staging', async () => {
   const sceneStructure = [{
diff --git a/test/staging/replace-furniture.js b/test/staging/replace-furniture.js
index 30f175d..a7beb15 100644
--- a/test/staging/replace-furniture.js
+++ b/test/staging/replace-furniture.js
@@ -1,7 +1,7 @@
 import replaceFurniture from '../../src/staging/replace-furniture'
 
 // mock runtime module to prevent from tests blowing up
-jest.mock('../../src/core/runtime.js', () => ({isBrowser: false, isNode: true}))
+jest.mock('../../src/core/runtime.js', () => ({isBrowser: false, isNode: true, require: require}))
 
 // replace furniture
 test('Replace furniture items', async () => {