import * as AST from "./ast.js";
declare const REGEXP_FLAGS: {
    readonly d: "hasIndices";
    readonly g: "global";
    readonly i: "ignoreCase";
    readonly m: "multiline";
    readonly s: "dotAll";
    readonly u: "unicode";
    readonly v: "unicodeSets";
    readonly y: "sticky";
};
type RegExpFlagShort = keyof typeof REGEXP_FLAGS;
type RegExpFlagLong = typeof REGEXP_FLAGS[RegExpFlagShort];
export declare class UnsupportedSyntaxError extends Error {
    name: string;
    constructor(details: string);
}
export declare function parseRegExpString(regexStr: string, flags?: Set<RegExpFlagLong>): AST.RegExpAST;
export declare function parseRegExp(regexp: RegExp): AST.RegExpAST;
export {};