import type { APIData, APIOutputConfig, GeneratedOutput } from '../../types';
/**
 * Generates the per-component api.ts files that other phases can consume
 * (directory mode; single-file JSON/YAML aggregates are also supported).
 * This is the critical output that enables the API-first architecture.
 */
export declare class APIFileGenerator {
    private config;
    constructor(config: APIOutputConfig);
    /**
     * Generate API file from API data
     */
    generate(apiData: APIData): Promise<GeneratedOutput>;
    private generatePerComponentTypeScriptFile;
    private generateJSONFile;
    private generateYAMLFile;
    /**
     * Validate API data before generation
     */
    validateAPIData(apiData: APIData): void;
    /**
     * Generate backup of existing API file if it exists
     */
    createBackup(): Promise<void>;
    /**
     * Compare with existing API file and report changes
     */
    reportChanges(newAPIData: APIData): Promise<void>;
}
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