[wp-trac] [WordPress Trac] #64647: Interactivity API: Update loading bar to use private router store

[WordPress Trac]

#64647: Interactivity API: Update loading bar to use private router store
-------------------------------+--------------------
 Reporter:  luisherranz        |      Owner:  (none)
     Type:  enhancement        |     Status:  new
 Priority:  normal             |  Milestone:  7.0
Component:  Interactivity API  |    Version:
 Severity:  normal             |   Keywords:
  Focuses:                     |
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 The Interactivity Router store contains internal properties
 ({{{state.navigation.hasStarted}}}, {{{state.navigation.hasFinished}}})
 that are not part of the public API. Gutenberg PR
 [https://github.com/WordPress/gutenberg/pull/70882 #70882] moves these
 properties to a new private {{{core/router/private}}} store and adds
 deprecation warnings when they are accessed through the public
 {{{core/router}}} store.

 The loading bar markup in WordPress Core
 ({{{WP_Interactivity_API::print_router_markup()}}}) currently uses
 {{{data-wp-interactive="core/router"}}} to bind to these internal
 navigation properties. This needs to be updated to {{{data-wp-
 interactive="core/router/private"}}} so it accesses the private store
 directly, avoiding the deprecation warnings.

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Ticket URL: <https://core.trac.wordpress.org/ticket/64647>
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