export declare class DataFragments {
    readonly totalBytes: number;
    readonly fragmentSize: number;
    readonly lastFragmentSize: number;
    readonly fragmentCount: number;
    readonly fragments: Uint8Array[];
    count: number;
    private _remainingFragments;
    constructor(totalBytes: number, fragmentSize: number);
    get remainingFragments(): number;
    addFragment(index: number, data: Uint8Array): boolean;
    hasUpTo(index: number): boolean;
    /** Note: returns fragment numbers (index + 1), not indices */
    missingFragments(lastFragmentNumber: number): Generator<number>;
    data(): Uint8Array | undefined;
}
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