import type { SqlfuConfig, SqlfuProjectConfig } from './types.js';
import { createDefaultInitPreview } from './init-preview.js';
export { createDefaultInitPreview };
export declare function defineConfig(config: SqlfuConfig): SqlfuConfig;
export type TsconfigPreferences = {
    prefersTsImportExtensions?: boolean;
};
export declare function resolveProjectConfig(fileConfig: SqlfuConfig, configPath: string, tsconfigPreferences?: TsconfigPreferences): SqlfuProjectConfig;
export declare function inferImportExtension(tsconfigPreferences: TsconfigPreferences): '.js' | '.ts';
export declare function assertConfigShape(configPath: string, config: object): asserts config is SqlfuConfig;
export type LoadedSqlfuProject = {
    initialized: true;
    projectRoot: string;
    configPath: string;
    config: SqlfuProjectConfig;
} | {
    initialized: true;
    projectRoot: string;
    configPath: string;
    inline: {
        modulePath: string;
    };
} | {
    initialized: false;
    projectRoot: string;
    configPath: string;
};
/**
 * The UI server deliberately serves uninitialized directories (it has an init
 * flow), but an inline defineConfig module would start a server whose every
 * request fails — `serve` rejects those up front like the other non-inline
 * commands.
 */
export declare function assertServableProject(project: LoadedSqlfuProject): void;