export interface TemplateMetadata {
    description?: string;
    author?: string;
    version?: string;
    lastModified?: string;
}
export interface LoadedTemplate {
    content: string;
    metadata: TemplateMetadata;
    filePath: string;
}
export interface TemplateInfo {
    operation: string;
    language: string;
    filePath: string;
}
export declare class TemplateLoader {
    private readonly templateDir;
    private templateCache;
    constructor(templateDir?: string);
    /**
     * Load a template by operation and language
     */
    loadTemplate(operation: string, language: string): Promise<string>;
    /**
     * Load template with metadata
     */
    loadTemplateWithMetadata(operation: string, language: string): Promise<LoadedTemplate>;
    /**
     * Substitute variables in template
     */
    substituteVariables(template: string, variables: Record<string, string>): string;
    /**
     * List all available templates
     */
    listAvailableTemplates(): Promise<TemplateInfo[]>;
    /**
     * Parse metadata from template header comments
     */
    private parseMetadata;
    /**
     * Generate cache key for operation/language
     */
    private getCacheKey;
    /**
     * Clear template cache
     */
    clearCache(): void;
    /**
     * Clear specific template from cache
     */
    clearCacheForTemplate(operation: string, language: string): void;
}
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