[wp-trac] [WordPress Trac] #59407: Build: Introduce SCRIPT_DEBUG global in webpack processing

[WordPress Trac]

#59407: Build: Introduce SCRIPT_DEBUG global in webpack processing
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 Reporter:  gziolo                     |       Owner:  gziolo
     Type:  enhancement                |      Status:  assigned
 Priority:  normal                     |   Milestone:  6.4
Component:  Build/Test Tools           |     Version:  trunk
 Severity:  normal                     |  Resolution:
 Keywords:  has-patch gutenberg-merge  |     Focuses:
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Description changed by gziolo:

Old description:

> Backports the same changes to the webpack config in the Gutenberg plugin
> with https://github.com/WordPress/gutenberg/pull/50122.
>
> The `warning` from `@wordpress/warning` no longer worked correctly with
> webpack 5. In practice, it no longer called `console.warn`.  To fix it,
> the usage of `process.env.NODE_ENV` check got replaced with another
> optional global: `SCRIPT_DEBUG`. All the tools used in the Gutenberg, get
> updated to work with this new constant, including `@wordpress/scripts`.
> This way, developers are able to guard code that should be run only in
> development mode. In WordPress core, the same constant needs to be added
> mostly to ensure that the code behind the check gets completely removed
> in production mode.

New description:

 Backports the same changes to the webpack config in the Gutenberg plugin
 with https://github.com/WordPress/gutenberg/pull/50122.

 The `warning` from `@wordpress/warning` no longer worked correctly with
 webpack 5. In practice, it no longer called `console.warn`.  To fix it,
 the usage of `process.env.NODE_ENV` check got replaced with another
 optional global: `SCRIPT_DEBUG`. All the tools used in the Gutenberg, get
 updated to work with this new constant, including `@wordpress/scripts`.
 This way, developers are able to guard code that should be run only in
 development mode. In WordPress core, the same constant needs to be added
 mostly to ensure that the code behind the check gets completely removed in
 production mode.

 It's an enhancement on top of #59411 and can be tested after WordPress
 packages get backported from the Gutenberg plugin.

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Ticket URL: <https://core.trac.wordpress.org/ticket/59407#comment:6>
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