/**
 * Generic value matcher implementation, shared by query, headers and body matchers.
 */
import type { ValueMatcher } from '../protocol';
export declare function isValueMatcher(v: unknown): v is {
    $$contains: string;
} | {
    $$regex: string;
};
export declare function matchValue(expected: ValueMatcher, actual: unknown): boolean;
/**
 * Builds a RegExp from a string.
 * Accepts either a plain pattern ('foo.*') or a '/pattern/flags' form (consistent with URL's regexp matching).
 * The '/pattern/flags' form is only used when the trailing part contains valid regex flags,
 * so a plain pattern that merely starts with '/' is not misinterpreted.
 */
export declare function regexpFromString(s: string): RegExp;
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