React-starter-kit: Breaks on Internet Explorer 11 on Windows 7 & Firefox 44.0.2 on Ubuntu 14.0.4

[madsithlord]

Master branch breaks on Windows 7 (IE) & Ubuntu (Firefox ) machines. I used yarn to install and start the server.

Windows 7:
Internet Explorer - 11
Error: Objects are not valid as a React Child (found: object with keys{$$typeof, type, ref, props, _owner, _store}).

Ubuntu 14.0.4:
Firefox 44.0.2 but works fine 48(Tried in a different Ubuntu 14.0.4)

Any help would be really appreciated.

[danjambur]

Can't provide much feedback without a snippet of the code it's failing on unfortunately.

[frenzzy]

I think the problem is that polyfils are executed too late. This should be fixed in master branch.

[madsithlord]

@frenzzy , I am still trying to fix it but no luck. It would be really great if you could help me out. Thanks in advance.

[frenzzy]

Remove import 'babel-polyfill'; from src/client.js and src/server.js
and add it to tools/webpack.config.js like so:

// ...
  entry: {
    client: ['babel-polyfill', './src/client.js'],
  },
// ...
  entry: {
    server: ['babel-polyfill', './src/server.js'],
  },
// ...

[RowanTaubitz]

I think the problem is with react-optimize, as commenting that out also fixes it, but inserting the babel-polyfill before it fixes it.

Add 'babel-polyfill', in tools/webpack.config.js on line 61, before 'stage-2', and it now seems to work in IE11. I wasn't even getting an error in IE11, it just kept hard crashing.