import type { StringSchemaOptions } from "./StringSchema.js";
import { StringSchema } from "./StringSchema.js";
/** Options for a `PhoneSchema` */
export interface PhoneSchemaOptions extends Omit<StringSchemaOptions, "input" | "min" | "max" | "match" | "rows"> {
}
/**
 * Type of `StringSchema` that defines a valid phone number.
 * - Multiple string formats are automatically converted to E.164 format (starting with `+` plus).
 * - Falsy values are converted to `""` empty string.
 */
export declare class PhoneSchema extends StringSchema {
    constructor({ one, title, ...options }: PhoneSchemaOptions);
    sanitize(insaneString: string): string;
}
/** Valid phone number, e.g. `+441234567890` */
export declare const PHONE: PhoneSchema;
/** Valid phone number, e.g. `+441234567890`, or `null` */
export declare const NULLABLE_PHONE: import("./NullableSchema.js").NullableSchema<string>;