fix devBuild

[chenqingspring]

This change is 

[justin808]

@mjhenkes This looks great. I'll examine this tomorrow. What are the reproduction steps to see the issue?

@Conturbo can you try this out?

[mjhenkes]

@justin808 Assuming a webpack config that looks something like this.

Then build assets for production (NODE_ENV=production webpack --config webpack.config.js) and the console will log "Webpack dev build for Rails".
devBuild is always set to true because env (the list of environment variables) will never equal 'production'

@chenqingspring I'd recommend checking const devBuild = configEnv !== 'production'; to stay inline with the the fallbacks specified in the code.

[chenqingspring]

@mjhenkes It makes more sense :)

[justin808]

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Reviewed 1 of 1 files at r2.
Review status: all files reviewed at latest revision, all discussions resolved, some commit checks failed.

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Comments from Reviewable

[justin808]

@chenqingspring Please add a changelog.md entry and I'll merge this.

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Review status: all files reviewed at latest revision, all discussions resolved, some commit checks failed.

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Comments from Reviewable

[justin808]

@chenqingspring

1. CI failed linting
2. Please format the message for 8.0.4 as the release number EXACTLY like the other entries. And be sure to update both the top and the bottom of the file.

Finished in 1.38 seconds (files took 2.25 seconds to load)
1 example, 0 failures
Completed all RSpec tests
cd /home/travis/build/shakacode/react_on_rails && yarn run eslint
yarn run v0.24.6
$ eslint . 
/home/travis/build/shakacode/react_on_rails/webpackConfigLoader.js
  58:1  error  Trailing spaces not allowed  no-trailing-spaces
✖ 1 problem (1 error, 0 warnings)

[justin808]

Reviewed 1 of 1 files at r3.
Review status: all files reviewed at latest revision, 1 unresolved discussion, some commit checks failed.

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CHANGELOG.md, line 12 at r3 (raw file):
Like this format, and be sure to see how the version number corresponds to the bottom of the this file.

[8.0.2]

Fixed

• #862 by justin808

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Comments from Reviewable

[justin808]

see the bottom of the file for how you do the diff of 8.04 and 8.03, @chenqingspring

[chenqingspring]

ok. I didn't notice the references :(

but the build failed again..

[justin808]

Thanks @chenqingspring!