GeoLeaf Core API - v3.19.0
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    A theme descriptor (loose JSON read from the active profile).

    interface ThemeConfig {
        id: string;
        name?: string;
        label?: string;
        layers?: ThemeLayerConfig[];
        config?: Record<string, unknown>;
        view?: ThemeViewDeclaration;
    }
    Index
    id: string
    name?: string
    label?: string
    layers?: ThemeLayerConfig[]
    config?: Record<string, unknown>

    Where the theme frames the map, as the profile declares it; absent, it frames nothing.