/** Machine-readable conversion failure kind, published as `error.code`. */
export type ConvertErrorCode = 'unsupported' | 'malformed' | 'encrypted' | 'resourceLimit' | 'missingPart' | 'io';
/** Why a conversion could not produce a useful result. */
export declare class ConvertError extends Error {
    readonly code: ConvertErrorCode;
    readonly part: string | undefined;
    readonly detail: string | undefined;
    readonly limit: string | undefined;
    private constructor();
    static unsupported(what: string): ConvertError;
    static malformed(detail: string): ConvertError;
    static malformedPart(part: string, detail: string): ConvertError;
    static encrypted(): ConvertError;
    static resourceLimit(limit: string, detail: string): ConvertError;
    static missingPart(part: string): ConvertError;
    static io(err: unknown): ConvertError;
    /** True for errors that must abort even when a part is optional. */
    isFatal(): boolean;
}