/**
 * Fetch the model artifacts required by the diarization pipeline.
 *
 * Default source is the Hugging Face mirror at
 *   https://huggingface.co/briox/diarization-js-community-1
 * which exposes:
 *   - segmentation-3.0.onnx          (~6 MB,  pyannote/segmentation-3.0, MIT)
 *   - embedding-resnet34.onnx        (~26 MB, ResNet34 wespeaker wrapper, CC-BY-4.0)
 *   - plda-params-vbx.json           (~1 MB,  pyannote VBx PLDA params)
 *
 * In Node these are cached on disk under `~/.cache/diarization-js/<hash>/`
 * (or `$DIARIZATION_JS_CACHE` if set). In the browser we rely on the HTTP
 * cache (HF serves with `Cache-Control: max-age=...`); first load fetches
 * ~33 MB, subsequent loads are served from disk by the browser.
 *
 * The library never hard-requires huggingface.co — pass `source` to point at
 * any mirror that serves the same three filenames at the same paths
 * (e.g. your own CDN or `file://` paths in tests).
 */
import type { OrtRuntime } from "./models/ort-runtime.js";
export interface ArtifactProgress {
    file: "segmentation" | "embedding" | "plda";
    loaded: number;
    total: number;
    /** 0..1 when total is known, undefined otherwise. */
    fraction?: number;
}
export interface EnsureArtifactsOptions {
    /**
     * Base URL or local directory containing the three artifact files at their
     * default names. Defaults to the official Hugging Face mirror.
     */
    source?: string;
    /**
     * Disable on-disk caching in Node. The browser path always relies on the
     * HTTP cache; this flag is a no-op there.
     */
    cache?: boolean;
    /**
     * Override the on-disk cache root in Node. Falls back to
     * `$DIARIZATION_JS_CACHE`, then `~/.cache/diarization-js/`.
     */
    cacheDir?: string;
    onProgress?: (p: ArtifactProgress) => void;
}
export interface DiarizationArtifacts {
    segmentationModel: Uint8Array;
    embeddingModel: Uint8Array;
    pldaParamsJson: unknown;
}
/**
 * Optional convenience: pair an `OrtRuntime` with `ensureArtifacts()` output
 * to get a `PipelineConfig`-shaped object directly. Kept here as a standalone
 * helper to avoid coupling the artifacts loader to the pipeline constructor.
 */
export interface DiarizationArtifactsWithRuntime extends DiarizationArtifacts {
    ort: OrtRuntime;
}
export declare function ensureArtifacts(options?: EnsureArtifactsOptions): Promise<DiarizationArtifacts>;
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