⚠️ Diagnostic: this is a diagnostic rule used by the diagnostic feature.

Show diagnostics for items that don't exist in the registry.

• ("always"): show diagnostics for all unknown IDs
• ("only-default-namespace"): only show diagnostics for unknown IDs that are under the default namespace (minecraft).

{
    "strictItemCheck": ["error", "only-default-namespace"]
}

{
    "strictItemCheck": null
}

This rule was introduced in DHP 2.0.0.