Cannot find module 'ReactPerf' from 'react-native.js'

[chinesedfan]

Even with the help of https://github.com/azarashd/react-native-mock, it can't work in RN 0.59.

Based on @azarashd's work, I did two more things in my fork to solve.

• Unless you really need it, comment this line

  react-native-mock/src/react-native.js

  Line 111 in 4c33a4d

  Perf: require('react-addons-perf'),

  .
• Revert react-timer-mixin as a dependency, as react-native doesn't include it any more.