Integrate Jed-formatted localization data

[desrosj]

In ​gutenberglib/i18n.php there is a function for returning Jed-formatted localization data. This should exist in WordPress Core.

[desrosj]

There are currently no tests for this function in the plugin.

This ​function is called once in lib/client-assets.php.

I believe the new, correct implementation when merging to core would be wp_get_jed_locale_data( 'default' ), as the gutenberg text domain will no longer exist.

[pento]

In 43759:

i18n: Add the wp_get_jed_locale_data() function.

This function formats locale information to be used by Jed.

Props desrosj.
See #45111.

[ocean90]

Related: #45103

It's possible that we don't need this function in core.

[pento]

Noice, feel free to revert if it's unnecessary. 🙂

[ocean90]

With wp_set_script_translations() wp_get_jed_locale_data() no longer necessary and thus should be reverted.

cc: @herregroen

[herregroen]

I agree, especially as this function will load the entire domain which is less than optimal and, as far as I can see, the only use-case for this function is providing JS translations.

[pento]

In 43910:

i18n: Remove the wp_get_jed_locale_data() function.

This function was used as a translation workaround in the Gutenberg plugin, it has been replaced in core with the wp_set_script_translations() functionality, instead.

See #45111.