import type { ParseContext, SchemaNode, StringFormat } from "../types.js";
import { BaseSchema } from "./base.js";
export declare class StringSchema extends BaseSchema<string, string> {
    private _minLength?;
    private _maxLength?;
    private _pattern?;
    private _startsWith?;
    private _endsWith?;
    private _includes?;
    private _format?;
    /**
     * Cached compiled pattern. `undefined` = not yet compiled, `null` =
     * compilation failed (invalid pattern). Avoids recompiling on every value.
     */
    private _patternRe?;
    _getCoercionTarget(): string;
    minLength(n: number): this;
    maxLength(n: number): this;
    pattern(p: string): this;
    /** Lazily compile and cache the pattern. Returns null if invalid. */
    private _getPatternRe;
    startsWith(s: string): this;
    endsWith(s: string): this;
    includes(s: string): this;
    format(f: StringFormat): this;
    _validate(input: unknown, ctx: ParseContext): unknown;
    _toNode(): SchemaNode;
}
//# sourceMappingURL=string.d.ts.map