import { ModelAttribute } from '@mrleebo/prisma-ast';
/**
 * Adds a field to a model in your schema.prisma data model.
 *
 * @remarks Not ready for actual use
 * @param source - schema.prisma source file contents
 * @param modelName - name of the model to add a field to
 * @param attributeProps - the model attribute (such as an index) to add
 * @returns The modified schema.prisma source
 * @example Usage
 * ```
 * addPrismaModelAttribute(source, "Project", {
 *   type: "attribute",
 *   kind: "model",
 *   name: "index",
 *   args: [{ type: "attributeArgument", value: { type: "array", args: ["name"] } }]
 * });
 * ```
 */
export declare function addPrismaModelAttribute(source: string, modelName: string, attributeProps: ModelAttribute): Promise<string>;