export interface ValidationRule {
    test: (value: string) => boolean;
    message: string;
}
export interface ValidateOptions {
    rules?: ValidationRule[];
    /** When provided, bridges to the Constraint Validation API via `setValidity()`. */
    internals?: ElementInternals;
}
/** Runs validation rules against a value and dispatches `native:valid` or `native:invalid` events. */
export declare class ValidateController {
    #private;
    readonly host: HTMLElement;
    rules: ValidationRule[];
    constructor(host: HTMLElement, options?: ValidateOptions);
    get valid(): boolean;
    get errorMessage(): string;
    validate(value?: string): boolean;
    clearValidation(): void;
    destroy(): void;
    static required(message?: string): ValidationRule;
    static minLength(min: number, message?: string): ValidationRule;
    static maxLength(max: number, message?: string): ValidationRule;
    static pattern(regex: RegExp, message?: string): ValidationRule;
}
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