import type { ArkmeBackgroundSoundEligibilityReason, ArkmeMessageSnapshotDetail, ArkmeTimelineItem } from '../types.js';
export declare function arkmeMessageSnapshotDurationLabel(value: number): string;
export declare function arkmeCanOpenMessageSnapshot(item: ArkmeTimelineItem): boolean;
/** Equally samples the full recording and maps it onto the desktop 1–20px waveform. */
export declare function arkmeMessageSnapshotWaveformHeights(amplitudes: readonly number[]): number[];
export declare function ArkmeMessageSnapshotDialogContent({ item, detail, previewText, metadataUnavailable, createdAtMillis, loading, loadError, backgroundSoundEnabled, backgroundSoundSupported, backgroundSoundEligibilityReason, onEnableBackgroundSound }: {
    item: ArkmeTimelineItem;
    detail?: ArkmeMessageSnapshotDetail;
    previewText?: string;
    metadataUnavailable?: string | undefined;
    createdAtMillis?: number | undefined;
    loading?: boolean;
    loadError?: string;
    backgroundSoundEnabled?: boolean;
    backgroundSoundSupported?: boolean;
    backgroundSoundEligibilityReason?: ArkmeBackgroundSoundEligibilityReason;
    onEnableBackgroundSound?: () => void;
}): import("react").JSX.Element;
export declare function ArkmeMessageSnapshotDialog({ item, detail, previewText, metadataUnavailable, createdAtMillis, loading, loadError, backgroundSoundEnabled, backgroundSoundSupported, backgroundSoundEligibilityReason, onEnableBackgroundSound, onClose }: {
    item: ArkmeTimelineItem;
    detail?: ArkmeMessageSnapshotDetail;
    previewText?: string;
    metadataUnavailable?: string | undefined;
    createdAtMillis?: number | undefined;
    loading?: boolean;
    loadError?: string;
    backgroundSoundEnabled?: boolean;
    backgroundSoundSupported?: boolean;
    backgroundSoundEligibilityReason?: ArkmeBackgroundSoundEligibilityReason;
    onEnableBackgroundSound?: () => void;
    onClose: () => void;
}): import("react").ReactPortal;
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