[wp-trac] [WordPress Trac] #38895: REST API JS Client should cache schema in sessionStorage by default when available

[WordPress Trac]

#38895: REST API JS Client should cache schema in sessionStorage by default when
available
-----------------------------+-----------------------------
 Reporter:  adamsilverstein  |      Owner:
     Type:  defect (bug)     |     Status:  new
 Priority:  normal           |  Milestone:  Awaiting Review
Component:  REST API         |    Version:  trunk
 Severity:  normal           |   Keywords:  has-patch
  Focuses:  javascript       |
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 The `wp-api` JS client traverses the schema to build out its models and
 collections. The schema is generally stable and the client is designed to
 cached the schema in sessionStorage to avoid repeated requests to retrieve
 the schema.  This behavior can be disabled by developers by setting
 `wpApiSettings.cacheSchema` to false; If undefined or true, the schema
 should be cached.

 A bug in the check before storing the schema in sessionStorage means it
 currently never gets set unless `wpApiSettings.cacheSchema` is explicitly
 set to true.

 Patch incoming.

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Ticket URL: <https://core.trac.wordpress.org/ticket/38895>
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