GeoLeaf Core API - v3.0.0
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    Variable DEFAULT_PERMALINK_FIELDSConst

    DEFAULT_PERMALINK_FIELDS: readonly PermalinkField[] = ...

    Default set of optional facets serialized into the permalink when config.fields is unset (layer visibility + taxonomy/tag/rating facets + text filter + theme).

    It doubles as the exhaustive list of whitelistable facets: permalink-url iterates it to prune a state down to config.fields (compact path included). The view triple (lat / lng / zoom) is deliberately absent — it is always serialized and always required on parse.