/**
* Handlebars renderer — lazy-loads the `handlebars` peer dep so the
* core bundle stays clean.
*
* ```ts
* import { handlebarsRenderer } from "unemail/render/handlebars"
* email.use(withRender(handlebarsRenderer()))
*
* await email.send({
*   from, to, subject,
*   handlebars: "Hello {{name}}",
*   handlebarsVars: { name: "Ada" },
* })
* ```
*
* @module
*/
import type { Renderer } from "./_middleware.mjs";
export interface HandlebarsRendererOptions {
	helpers?: Record<string, (...args: unknown[]) => unknown>;
	partials?: Record<string, string>;
}
export declare function handlebarsRenderer(options?: HandlebarsRendererOptions): Renderer;