Gatsby: react-hot-loader error on IE11

[rgllm]

Description

react-hot-loader is broken on IE because of Polyfills import. The issue is related with these: 4.3.12 breaks polyfills for IE11.

Environment

npmPackages:
gatsby: ^2.0.31 => 2.0.45
gatsby-image: ^2.0.17 => 2.0.19
gatsby-plugin-react-helmet: ^3.0.0 => 3.0.1
gatsby-plugin-sass: ^2.0.1 => 2.0.3
gatsby-plugin-sharp: ^2.0.8 => 2.0.12
gatsby-plugin-typescript: ^2.0.0 => 2.0.1
gatsby-source-filesystem: ^2.0.5 => 2.0.7
gatsby-transformer-json: ^2.1.4 => 2.1.5
gatsby-transformer-sharp: ^2.1.5 => 2.1.8

npmGlobalPackages:
gatsby-cli: 2.4.0

[rgllm]

@kakadiadarpan the problem seems solved on react-hot-loader side. I think Gatsby should update the dependency.

[DSchau]

Seems like the fix! To fix this we need to upgrade our react-hot-loader dep, and then validate no regressions.

See: gaearon/react-hot-loader#1099 for the fix

[DSchau]

Also we'd (apparently!) get React Hooks support by updating to at least 4.4.2 ❤️ https://github.com/gaearon/react-hot-loader/blob/7c0f9a04bce89801d387b277251c2b00da525534/README.md#-hot-labs-