/**
 * @param blob A source blob.
 * @param start The offset to use as the start of the
 * slice.
 * @param end The offset to use as the end of the slice.
 * @returns An object with `start` and `end` properties, reflecting
 * the effective boundaries to use given the size of the blob.
 * @private
 */
export declare const calculateEffectiveBoundaries: (blob: Blob, start?: number, end?: number) => {
    start: number;
    end: number;
};
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