Manual:$wgResourceLoaderStorageVersion

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ResourceLoader: $wgResourceLoaderStorageVersion
Cache version for client-side ResourceLoader module storage.
Introduced in version:1.23.0 (Gerrit change 86867; git #If2ad2d8)
Removed in version:still in use
Allowed values:(integer)
Default value:1

Details[edit]

You can trigger invalidation of the contents of the module store by incrementing this value.