undefined is not an object (evaluating '_react.PropTypes.object')

Question

Just created a new project using reac-native-init . Using

"react": "16.0.0",
"react-native": "0.51.0",

Running the project from xcode i am getting the below errors

Unhandled JS Exception: Module AppRegistry is not a registered callable module (calling runApplication)

undefined is not an object (evaluating '_react.PropTypes.object')

Searched in my project directory for _react.PropTypes.object. It was being used only in the mobx-react folder. Now my project doesn't run, its stuck at the splash screen. Any help is greatly appreciated

EDIT

Now i am getting this error

_react3.default.PropTypes.shape

But i cant find this line in my whole project

Can you share the whole error log?

hattenn
– hattenn

2017-12-25 17:51:41 +00:00
Commented Dec 25, 2017 at 17:51 — hattenn
– hattenn, Commented Dec 25, 2017 at 17:51

Iva · Accepted Answer · 2017-12-26 04:51:57Z

7

Simply import prop-types to your project.

import PropTypes from 'prop-types'

If you didn't have it in your project than first install it using yarn or npm

npm install prop-types

or

yarn add prop-types

answered Dec 26, 2017 at 4:51

Iva

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2 Comments

Zeeshan Ahmad Khalil Over a year ago

I installed it, but its never used in my code and getting the same error

Iva Over a year ago

what is the exact error? @ZeeshanAhmadKhalil

sebastianf182 · Accepted Answer · 2017-12-25 23:10:31Z

1

PropTypes is not included anymore in the core of RN and you need to install it manually. Try that before: https://github.com/facebook/prop-types

Although, it is very weird that you get that issue in the initial project. I don't get surprised anymore since every RN release breaks my code in half.

answered Dec 25, 2017 at 23:10

sebastianf182

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