Luxar Viewer API Documentation - v2026.10.19
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    Interface PrefetchableLoader

    Structural type for a loader that supports predictive prefetch. The concrete spatial-index loaders implement prefetchChunkBoundary; loaders without chunk metadata can expose prefetchChunks for the historical one-step behavior. The base loader interfaces don't declare either method, so this structural type avoids coupling scene-loader.ts to concrete loader classes.

    interface PrefetchableLoader {
        prefetchChunks?: (vs: ViewState, signal?: AbortSignal) => Promise<void>;
        prefetchChunkBoundary?: (
            current: ViewState,
            predicted: ViewState,
            signal?: AbortSignal,
        ) => Promise<void>;
    }
    Index
    prefetchChunks? prefetchChunkBoundary?
    prefetchChunks?: (vs: ViewState, signal?: AbortSignal) => Promise<void>
    prefetchChunkBoundary?: (
        current: ViewState,
        predicted: ViewState,
        signal?: AbortSignal,
    ) => Promise<void>

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