import { Mutation } from './types';
type MutationFieldValue = string | number | boolean | any[] | {
    category: string;
    detail?: string | null;
} | {
    [field: string]: string | number | boolean;
} | Ref | undefined | null;
interface MutationFields {
    [field: string]: MutationFieldValue;
}
interface Conflict {
    constraint: string;
    update_columns: string[];
}
export interface FarosModel {
    [modelName: string]: MutationFields;
}
export declare class Ref {
    readonly model?: FarosModel | undefined;
    constructor(model?: FarosModel | undefined);
}
export declare class QueryBuilder {
    private readonly origin;
    constructor(origin: string);
    /**
     * Creates an upsert mutation for the provided Faros model.
     * @param model   The Faros model
     * @param conflict Override the default conflict clause
     * @returns       The upsert mutation
     */
    upsert(model: FarosModel, conflict?: Conflict): Mutation;
    delete(model: FarosModel): Mutation;
    /**
     * Creates a Ref that can be used in another Faros Model.
     */
    ref(model?: FarosModel): Ref;
    /**
     * Creates a mutation object that will update every field of the Faros Model.
     * If the model contains fields that reference another
     * model, those fields will be recursively turned into MutationReferences.
     * @param model   The Faros model
     * @param ref     If the mutationObj should be a reference
     * @returns       The mutation object
     */
    private upsertMutationObj;
    /**
     * Creates a delete mutation object that will create _eq keys for every field
     * for the Faros Model.
     *
     * @param model   The Faros model
     * @param ref     If the DeleteMutationObject is a reference
     * @returns       The mutation object
     */
    private deleteMutationObj;
    private createConflictClause;
}
/**
 * Convert string arrays into postgres literal array.
 * Leave non-string arrays untouched.
 */
export declare function arrayLiteral(arr: any[]): string | object;
export declare function mask(object: any): string[];
/** @see GraphQLClient.batchMutation */
export declare function batchMutation(mutations: Mutation[]): string | undefined;
export {};