/** Base error class for all OpenSlide errors. */
export declare class OpenSlideError extends Error {
    constructor(message: unknown);
}
/**
 * Thrown when an operation is cancelled via an AbortSignal before it ran
 * (e.g. a queued readRegion whose tile was panned out of view).
 * `name` is 'AbortError' so generic abort filters recognise it.
 */
export declare class OpenSlideAbortError extends OpenSlideError {
    constructor(message?: string);
}
/** Thrown when the file format is not supported by OpenSlide. */
export declare class OpenSlideUnsupportedFormatError extends OpenSlideError {
    constructor(message?: string);
}
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