/**
 * @internal
 * Combines a base html template and the content, returning both a html and
 * plain text version of the email
 *
 * @param folderPath template directory
 * @param template plain text template whose paragraphs will be formatted into the base template. `.njk` gets appended.
 * @param data data that should be passed to the template.
 * @param base the base template. Default: `base.njk`
 * @returns
 */
export declare function parseCompositeTemplate(folderPath: string, template: string, data?: Record<string, any>, base?: string): {
    html: any;
    text: any;
};
/**
 * Fallback method: If the `${template}.njk` is not present, this will be called
 * to directly render the html (`${template}.html.njk`) and plain text
 * (`${template}.text.njk`) templates without additional logic.
 */
export declare function parseTemplatesDirectly(folderPath: string, template: string, data?: Record<string, any>): {
    html: any;
    text: any;
};