Polyfill newer JS features. Primarily targeted at older phones (for example, iOS 8) that will still run React Native. This library mutates JavaScript's built-in objects and should be used judiciously.
npm install react-native-polyfillThis leads to errors that look like this:
``
Unhandled JS Exception: undefined is not a function (evaluating ‘Number.parseInt’)
A lot of these functions are the ones that existed in prior versions of JavaScript
but were added to the Number object to namespace them. For example:
`js`
parseInt('20', 10); // existing JavaScript function
Number.parseInt('20', 10); // the 'new' way of accessing the same function as of ES2015
npm install --save react-native-polyfill
To use the entire package and mutate the base objects, simply import or require the package:
js
import 'react-native-polyfill';
require('react-native-polyfill');
`If you only want the Array or Number polyfills, you can include just one:
js
import 'react-native-polyfill/src/Array';
require('react-native-polyfill/src/Array');
`If you just want a single function or you want to limit the number of changes to
the base object, you can access the functions directly:
js
const includes = require('react-native-polyfill/src/Array/includes');
``