import type { StructuredDataResult, RuleInput } from '../types.js';
export type StructuredDataRuleOptions = {
    /** @type values to require (e.g. ['WebSite', 'Organization']) */
    required?: string[];
};
export type StructuredDataItem = Record<string, unknown>;
export type StructuredDataValidationError = {
    /** The JSON-LD item index (0-based) */
    index: number;
    /** The @type of the item if available */
    type?: string;
    level: 1 | 2 | 3;
    message: string;
};
/**
 * Validates all <script type="application/ld+json"> blocks on the page.
 *
 * Level 1: JSON syntax validity
 * Level 2: @context and @type presence
 * Level 3: Schema.org type-specific required field check
 *
 * Pass: all blocks parse correctly and pass L2/L3 checks
 * Fail: any JSON syntax error or missing @context / @type
 * Warn: missing schema-specific required fields (L3)
 */
export declare function checkStructuredData(input: RuleInput, options?: StructuredDataRuleOptions): StructuredDataResult;
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