export declare function toError(x: unknown): Error;
export declare function getErrorMessage(x: unknown): string;
export declare function augmentErrorMessage(e: unknown, message: string): unknown;
export declare const abortErrorName = "AbortError";
export declare function isAbortError(e: unknown): boolean;
export declare function throwAbortError(): void;
export declare function throwOnAbort(abortSignal: AbortSignal): void;
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