Add dotenv support for storybook in vue and react

[RWOverdijk]

Issue:

What I did

Added support for dotenv

How to test

Add to a new CRA app and use the .env files.

Misc

I guess this could be added to the docs but I wouldn't know where. Busy busy so if it's a must I'll look for it this weekend.

[RWOverdijk]

I didn't see any lock files when adding this.

[Hypnosphi]

What happens when you run yarn bootstrap --reset --core --docs and then git status ?

[RWOverdijk]

My bad. Pushed.

[codecov]

Codecov Report

Merging #2345 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master    #2345   +/-   ##
=======================================
  Coverage   21.23%   21.23%           
=======================================
  Files         283      283           
  Lines        6155     6155           
  Branches      713      723   +10     
=======================================
  Hits         1307     1307           
+ Misses       4311     4298   -13     
- Partials      537      550   +13

Impacted Files	Coverage Δ
app/react/src/server/config/webpack.config.js	0% <ø> (ø)	⬆️
app/vue/src/server/config/webpack.config.js	0% <ø> (ø)	⬆️
app/react/src/server/config/babel.js	0% <0%> (-100%)	⬇️
app/react/src/server/babel_config.js	0% <0%> (-77.42%)	⬇️
app/vue/src/server/utils.js	0% <0%> (-53.58%)	⬇️
lib/ui/src/modules/ui/configs/init_panels.js	25% <0%> (ø)	⬆️
...rc/modules/ui/components/left_panel/text_filter.js	30.98% <0%> (ø)	⬆️
addons/knobs/src/components/types/Select.js	7.93% <0%> (ø)	⬆️
lib/ui/src/modules/ui/containers/down_panel.js	23.52% <0%> (ø)	⬆️
addons/info/src/components/PropTable.js	21.36% <0%> (ø)	⬆️
... and 21 more

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[danielduan]

is there any way to silence the error when there isn't a .env file?

It's an optional file so I feel like the Failed to load ./.env. is misleading @RWOverdijk

[priley86]

+1 for not requiring .env and throwing a warning w/o it.