@maschinenlesbar.org/deutsche-digitale-bibliothek-cli
    Preparing search index...

    Variable SEARCH_PARAM_KEYSConst

    SEARCH_PARAM_KEYS: readonly [
        "query",
        "rows",
        "start",
        "sort",
        "fields",
        "filters",
        "facetFields",
        "facetLimit",
        "collection",
        "requestHandler",
    ] = ...

    The keys search() takes; anything else would be dropped without a word.