import { TemplatePart } from './templateParts.ts';
import { JsxContext } from './types.ts';
/**
 * If JSX prop value could possibly be `undefined`, we add `?? nothing` to it.
 *
 * See comment on ElementPropertyToAttributeMappings.stringified for reason why.
 */
export declare function autoAddNullishFallback(part: TemplatePart, context: JsxContext, defaultValue?: string): TemplatePart;