import { FuncArgString } from "./FuncArgString.js";
import { StringValue } from "../../../value/StringValue.js";
import { ExprEvalResult, ExprEvalSuccess } from "../../ExprEvalResult.js";
import { FunctionExpr } from "../FunctionExpr.js";
import { ExpressionValue } from "../../../value/ExpressionValue.js";
export declare class FuncArgRegexFlag extends FuncArgString {
    constructor(required: boolean, name: string, defaultValue: StringValue);
    protected transformForTypeCheck(callingExpr: FunctionExpr, invocationValue: ExprEvalSuccess<ExpressionValue>): ExprEvalResult<ExpressionValue>;
}