import type { RuleFnResult, RuleViolationLocation } from '@thymian/core';
export type ByteRange = {
    kind: 'int';
    first: number;
    last?: number;
} | {
    kind: 'suffix';
    length: number;
};
/**
 * Parses a `Range` header's `bytes` range set. Returns `undefined` when the
 * header is not one: another range unit, any range spec that RFC 9110
 * §14.1.2 does not allow, or more than one field line — `Range` is a single
 * `ranges-specifier` (§14.2), not a list, so field lines do not combine.
 */
export declare function parseRangeHeader(header: string | string[]): ByteRange[] | undefined;
export declare function intRanges(ranges: ByteRange[]): Extract<ByteRange, {
    kind: 'int';
}>[];
export declare function formatByteRange(range: ByteRange): string;
export declare function unparsableRangeHeader(ruleName: string, location: RuleViolationLocation, header: string | string[]): RuleFnResult;
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