import type { CompilerOptions, TypeAcquisition } from 'typescript';
export declare const defaultTSConfig: TSConfig;
export type frameworkWithTSSettings = 'vue' | 'react' | 'preact' | 'solid-js';
export declare const presets: Map<frameworkWithTSSettings, TSConfig>;
export interface TSConfigLoadedResult {
    error?: undefined;
    /** Absolute path of the root tsconfig/jsconfig file that was loaded. */
    tsconfigFile: string;
    /** The merged/resolved config (after `extends` are walked). */
    tsconfig: TSConfig;
    /** The user-written, un-merged config. Used by `astro add` to round-trip. */
    rawConfig: TSConfig;
    /**
     * Every tsconfig file that contributed via `extends`, root-first.
     * Includes `tsconfigFile`. Used to populate the dev-server watch list.
     */
    sources: string[];
}
export type TSConfigResult = TSConfigLoadedResult | {
    error: 'invalid-config';
    message: string;
} | {
    error: 'missing-config';
};
/**
 * Load a tsconfig.json or jsconfig.json if the former is not found.
 * @param root The directory to search in, defaults to `process.cwd()`.
 */
export declare function loadTSConfig(root: string | undefined): Promise<TSConfigResult>;
export declare function updateTSConfigForFramework(target: TSConfig, framework: frameworkWithTSSettings): TSConfig;
type StripEnums<T extends Record<string, any>> = {
    [K in keyof T]: T[K] extends boolean ? T[K] : T[K] extends string ? T[K] : T[K] extends object ? T[K] : T[K] extends Array<any> ? T[K] : T[K] extends undefined ? undefined : any;
};
export interface TSConfig {
    compilerOptions?: StripEnums<CompilerOptions>;
    compileOnSave?: boolean;
    extends?: string | string[];
    files?: string[];
    include?: string[];
    exclude?: string[];
    typeAcquisition?: TypeAcquisition;
}
export {};