import { z } from 'zod';
/** A string safe to place in an RFC 822 header: no control characters or line breaks. */
export declare const headerSafe: z.ZodString;
/** Strip control characters and line breaks, defending header assembly from injection. */
export declare function stripBreaks(value: string): string;
/**
 * Make a value safe for a quoted MIME header parameter (`name="..."`,
 * `filename="..."`): strip control characters (header injection) plus double
 * quotes and backslashes, which the MIME builder interpolates unescaped into
 * the quoted string.
 */
export declare function headerParamSafe(value: string): string;
//# sourceMappingURL=headers.d.ts.map