export declare class Accumulator {
    onBigEnoughBuffer: (bigBuffer: ArrayBuffer) => void;
    private buffers_;
    private minSize_;
    private currentSize_;
    constructor(minSize: number, onBigEnoughBuffer: (bigBuffer: ArrayBuffer) => void);
    setMinSize: (newMinSize: number) => number;
    clear: () => void;
    maybeBigEnoughNow: () => number;
    addBuffer: (a: ArrayBuffer) => number;
}