CODEWITHSUNDEEP
javascriptreact-nativeecmascript-6
kanduken
kanduken

Reputation: 110

Understanding Javascript and React native

In the below code snippet from F8App, I am not able to understand what is going on, can someone explain what's going on in line 3 of code and point to resources on the web where I can read about this.

'use strict';

import {StyleSheet, Platform} from 'react-native';

export function create(styles: Object): {[name: string]: number} {
  const platformStyles = {};
  Object.keys(styles).forEach((name) => {
    let {ios, android, ...style} = {...styles[name]};
    if (ios && Platform.OS === 'ios') {
      style = {...style, ...ios};
    }
    if (android && Platform.OS === 'android') {
      style = {...style, ...android};
    }
    platformStyles[name] = style;
  });
  return StyleSheet.create(platformStyles);
}

Upvotes: 0

Views: 56

Answers (1)

Nagender Singh
Nagender Singh

Reputation: 71

I think you are having trouble with the type checking that's added. That's actually not es6 but flow. You can read more about it here

Upvotes: 1

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