export declare function init(signal?: AbortSignal): RequestInit | undefined;
/** Parses an ISO-8601 calendar date (`YYYY-MM-DD`) into the UTC midnight the transport serializes back as that date. */
export declare function parseDate(value: string, name: string): Date;
export declare function formatDate(value: Date): string;
export declare function parseDateTime(value: string, name: string): Date;
export declare function requireFiniteNumber(value: number, name: string): number;
export declare function requireUnit<T extends string>(value: string, allowed: readonly T[], name: string): T;
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