import type { PgType, Schema } from "extract-pg-schema";
import type { ConnectionConfig } from "pg";
import type { CompositeProperty } from "./generators/composite-types";
import type { GenerateIdentifierTypeV3, GetMetadataV3, GetPropertyMetadataV3, GetRoutineMetadataV3 } from "./metadata-types";
import type Output from "./Output";
import type TypeMap from "./TypeMap";
import type { ConfigV4 } from "./config-types-v4";
type Awaitable<T> = T | PromiseLike<T>;
export type InstantiatedConfig = {
    connection: string | ConnectionConfig;
    schemas: Record<string, Schema>;
    typeMap: TypeMap;
    getMetadata: GetMetadataV3;
    getPropertyMetadata: GetPropertyMetadataV3;
    generateIdentifierType?: GenerateIdentifierTypeV3;
    getRoutineMetadata?: GetRoutineMetadataV3;
    propertySortFunction: (a: CompositeProperty, b: CompositeProperty) => number;
    enumStyle: "enum" | "type";
    outputPath: string;
    preDeleteOutputFolder: boolean;
    resolveViews: boolean;
    importsExtension?: ".ts" | ".js" | ".mjs" | ".cjs";
    tsModuleFormat?: "esm" | "commonjs" | "explicit-esm" | "explicit-commonjs";
    fileExtension: ".ts" | ".mts" | ".cts";
};
export type PreRenderHookV3 = (outputAcc: Output, instantiatedConfig: InstantiatedConfig) => Awaitable<Output>;
export type PostRenderHookV3 = (path: string, lines: string[], instantiatedConfig: InstantiatedConfig) => Awaitable<string[]>;
/**
 * V3 Configuration for Kanel.
 * This is the legacy config format, maintained for backwards compatibility.
 * Distinguished from V4 by the absence of the `generators` field.
 */
export type ConfigV3 = {
    connection: string | ConnectionConfig;
    schemas?: string[];
    typeFilter?: (pgType: PgType) => boolean;
    getMetadata?: GetMetadataV3;
    getPropertyMetadata?: GetPropertyMetadataV3;
    generateIdentifierType?: GenerateIdentifierTypeV3;
    propertySortFunction?: (a: CompositeProperty, b: CompositeProperty) => number;
    getRoutineMetadata?: GetRoutineMetadataV3;
    enumStyle?: "enum" | "type";
    outputPath?: string;
    preDeleteOutputFolder?: boolean;
    customTypeMap?: TypeMap;
    resolveViews?: boolean;
    preRenderHooks?: PreRenderHookV3[];
    postRenderHooks?: PostRenderHookV3[];
    /** @deprecated Use tsModuleFormat instead */
    importsExtension?: ".ts" | ".js" | ".mjs" | ".cjs";
    tsModuleFormat?: "esm" | "commonjs" | "explicit-esm" | "explicit-commonjs";
};
export type { ConfigV4 };
/**
 * Union type for both V3 and V4 configs.
 * Use isV3Config() or isV4Config() type guards to distinguish between them.
 */
export type Config = ConfigV3 | ConfigV4;
/**
 * Type guard to check if a config is a V3 config.
 * V3 configs are identified by the absence of the `generators` field.
 */
export declare function isV3Config(config: Config): config is ConfigV3;
/**
 * Type guard to check if a config is a V4 config.
 * V4 configs are identified by the presence of the `generators` field.
 */
export declare function isV4Config(config: Config): config is ConfigV4;