/**
 * Simple Mustache Template Parser
 *
 * A minimal implementation of Mustache template rendering for variable substitution.
 * Supports only basic variable interpolation: {{variable}}
 *
 * No external dependencies - uses only native JavaScript.
 *
 * @example
 * renderTemplate('Hello {{name}}!', { name: 'World' })
 * // Returns: 'Hello World!'
 */
export type TemplateData = Record<string, string | number | boolean | null | undefined>;
/**
 * Render a single template string with provided data
 *
 * @param template - Template string with {{variable}} placeholders
 * @param data - Data object with values to substitute
 * @returns Rendered string with variables replaced
 */
export declare function renderTemplate(template: string, data: TemplateData): string;
/**
 * Render a template (string or array of strings) with provided data
 *
 * @param template - Single template string or array of template strings
 * @param data - Data object with values to substitute
 * @returns Array of rendered strings (one per line)
 */
export declare function renderTemplateLines(template: string | string[], data: TemplateData): string[];