/// <reference types="node" />
import type { InstallOptions as EsinstallOptions } from '../vendor/types/esinstall';
import type * as http from 'http';
export interface RawSourceMap {
    version: number;
    sources: string[];
    names: string[];
    sourceRoot?: string;
    sourcesContent?: string[];
    mappings: string;
    file: string;
}
export declare type DeepPartial<T> = {
    [P in keyof T]?: T[P] extends Array<infer U> ? Array<DeepPartial<U>> : T[P] extends ReadonlyArray<infer U> ? ReadonlyArray<DeepPartial<U>> : DeepPartial<T[P]>;
};
export interface SSRLoaderConfig {
    load: (url: string) => Promise<{
        contents: string;
    }>;
}
export interface SSRLoader {
    importModule: <T = any>(url: string) => Promise<ESMRuntimeModule<T>>;
    invalidateModule: (url: string) => void;
}
export interface ESMRuntimeModule<T> {
    exports: T;
    css: string[];
}
export interface LoadResult<T = Buffer | string> {
    contents: T;
    originalFileLoc: string | null;
    contentType: string | false;
    checkStale?: () => Promise<void>;
}
export declare type OnFileChangeCallback = ({ filePath: string }: {
    filePath: any;
}) => any;
export interface SnowpackDevServer {
    port: number;
    loadUrl: {
        (reqUrl: string, opt?: {
            isSSR?: boolean | undefined;
            allowStale?: boolean | undefined;
            encoding?: undefined;
        } | undefined): Promise<LoadResult<Buffer | string>>;
        (reqUrl: string, opt: {
            isSSR?: boolean;
            allowStale?: boolean;
            encoding: BufferEncoding;
        }): Promise<LoadResult<string>>;
        (reqUrl: string, opt: {
            isSSR?: boolean;
            allowStale?: boolean;
            encoding: null;
        }): Promise<LoadResult<Buffer>>;
    };
    handleRequest: (req: http.IncomingMessage, res: http.ServerResponse, options?: {
        handleError?: boolean;
    }) => Promise<void>;
    sendResponseFile: (req: http.IncomingMessage, res: http.ServerResponse, { contents, originalFileLoc, contentType }: LoadResult) => void;
    getServerRuntime: (options?: {
        invalidateOnChange?: boolean;
    }) => SSRLoader;
    sendResponseError: (req: http.IncomingMessage, res: http.ServerResponse, status: number) => void;
    getUrlForFile: (fileLoc: string) => string | null;
    onFileChange: (callback: OnFileChangeCallback) => void;
    shutdown(): Promise<void>;
}
export declare type SnowpackBuildResultFileManifest = Record<string, {
    source: string | null;
    contents: string | Buffer;
}>;
export interface SnowpackBuildResult {
    result: SnowpackBuildResultFileManifest;
    onFileChange: (callback: OnFileChangeCallback) => void;
    shutdown(): Promise<void>;
}
export declare type SnowpackBuiltFile = {
    code: string | Buffer;
    map?: string;
};
export declare type SnowpackBuildMap = Record<string, SnowpackBuiltFile>;
/** Standard file interface */
export interface SnowpackSourceFile<Type = string | Buffer> {
    /** base extension (e.g. `.js`) */
    baseExt: string;
    /** file contents */
    contents: Type;
    /** if no location on disk, assume this exists in memory */
    locOnDisk: string;
    /** project "root" directory */
    root: string;
}
export interface PluginLoadOptions {
    /** The absolute file path of the source file, on disk. */
    filePath: string;
    /** A helper for just the file extension of the source file (ex: ".js", ".svelte") */
    fileExt: string;
    /** True if builder is in dev mode (`snowpack dev` or `snowpack build --watch`) */
    isDev: boolean;
    /** True if builder is in SSR mode */
    isSSR: boolean;
    /** True if HMR is enabled (add any HMR code to the output here). */
    isHmrEnabled: boolean;
}
export interface PluginTransformOptions {
    id: string;
    fileExt: string;
    contents: string | Buffer;
    isDev: boolean;
    isHmrEnabled: boolean;
}
export interface PluginRunOptions {
    isDev: boolean;
}
/** map of extensions -> code (e.g. { ".js": "[code]", ".css": "[code]" }) */
export declare type PluginLoadResult = SnowpackBuildMap;
export declare type PluginTransformResult = {
    contents: string;
    map: string | RawSourceMap;
};
export interface PluginOptimizeOptions {
    buildDirectory: string;
}
export interface SnowpackPlugin {
    /** name of the plugin */
    name: string;
    /** Tell Snowpack how the load() function will resolve files. */
    resolve?: {
        /**
           file extensions that this load function takes as input (e.g. [".jsx",
           ".js", …])
         */
        input: string[];
        /**
           file extensions that this load function outputs (e.g. [".js", ".css"])
         */
        output: string[];
    };
    /** load a file that matches resolve.input */
    load?(options: PluginLoadOptions): Promise<PluginLoadResult | string | null | undefined | void>;
    /** transform a file that matches resolve.input */
    transform?(options: PluginTransformOptions): Promise<PluginTransformResult | string | null | undefined | void>;
    /** runs a command, unrelated to file building (e.g. TypeScript, ESLint) */
    run?(options: PluginRunOptions): Promise<unknown>;
    /** optimize the entire built application */
    optimize?(options: PluginOptimizeOptions): Promise<void>;
    /** cleanup any long-running instances/services before exiting.  */
    cleanup?(): void | Promise<void>;
    /** Known dependencies that should be installed */
    knownEntrypoints?: string[];
    /** read and modify the Snowpack config object */
    config?(snowpackConfig: SnowpackConfig): void;
    /** Called when a watched file changes during development. */
    onChange?({ filePath }: {
        filePath: string;
    }): void;
    /** (internal interface, not set by the user) Mark a file as changed. */
    markChanged?(file: string): void;
}
/** Snowpack Build Plugin type */
export declare type SnowpackPluginFactory<PluginOptions = object> = (snowpackConfig: SnowpackConfig, pluginOptions?: PluginOptions) => SnowpackPlugin;
export declare type MountEntry = {
    url: string;
    static: boolean;
    resolve: boolean;
};
export interface OptimizeOptions {
    entrypoints: 'auto' | string[] | ((options: {
        files: string[];
    }) => string[]);
    preload: boolean;
    bundle: boolean;
    splitting: boolean;
    treeshake: boolean;
    manifest: boolean;
    minify: boolean;
    target: 'es2020' | 'es2019' | 'es2018' | 'es2017';
}
export interface RouteConfigObject {
    src: string;
    dest: string | ((req: http.IncomingMessage, res: http.ServerResponse) => void);
    match: 'routes' | 'all';
    _srcRegex: RegExp;
}
export interface PackageSourceLocal extends Omit<EsinstallOptions, 'alias' | 'dest' | 'sourcemap' | 'verbose' | 'logger' | 'cwd' | 'dest' | 'treeshake'> {
    source: 'local';
    external: string[];
    knownEntrypoints: string[];
}
export interface PackageSourceRemote {
    source: 'remote';
    origin: string;
    external: string[];
    cache: string;
    types: boolean;
}
export interface SnowpackConfig {
    root: string;
    extends?: string;
    exclude: string[];
    mount: Record<string, MountEntry>;
    alias: Record<string, string>;
    plugins: SnowpackPlugin[];
    devOptions: {
        secure: boolean;
        hostname: string;
        port: number;
        fallback: string;
        open: string;
        output: 'stream' | 'dashboard';
        hmr?: boolean;
        hmrDelay: number;
        hmrPort: number | undefined;
        hmrErrorOverlay: boolean;
    };
    buildOptions: {
        out: string;
        baseUrl: string;
        metaUrlPath: string;
        clean: boolean;
        sourcemap: boolean;
        watch: boolean;
        htmlFragments: boolean;
        jsxFactory: string | undefined;
        jsxFragment: string | undefined;
        ssr: boolean;
    };
    testOptions: {
        files: string[];
    };
    packageOptions: PackageSourceLocal | PackageSourceRemote;
    /** Optimize your site for production. */
    optimize?: OptimizeOptions;
    /** Configure routes during development. */
    routes: RouteConfigObject[];
    /** EXPERIMENTAL - This section is experimental and not yet finalized. May change across minor versions. */
    experiments: {};
    _extensionMap: Record<string, string[]>;
}
export declare type SnowpackUserConfig = {
    root?: string;
    install?: string[];
    extends?: string;
    exclude?: string[];
    mount?: Record<string, string | Partial<MountEntry>>;
    alias?: Record<string, string>;
    plugins?: (string | [string, any])[];
    devOptions?: Partial<SnowpackConfig['devOptions']>;
    buildOptions?: Partial<SnowpackConfig['buildOptions']>;
    testOptions?: Partial<SnowpackConfig['testOptions']>;
    packageOptions?: Partial<SnowpackConfig['packageOptions']>;
    optimize?: Partial<SnowpackConfig['optimize']>;
    routes?: Pick<RouteConfigObject, 'src' | 'dest' | 'match'>[];
    experiments?: {};
};
export interface CLIFlags {
    help?: boolean;
    version?: boolean;
    reload?: boolean;
    root?: string;
    config?: string;
    env?: string[];
    open?: string[];
    secure?: boolean;
    verbose?: boolean;
    quiet?: boolean;
    [flag: string]: any;
}
export interface ImportMap {
    imports: {
        [specifier: string]: string;
    };
}
export interface LockfileManifest {
    dependencies: {
        [packageName: string]: string;
    };
    lock: {
        [specifier: string]: string;
    };
}
export interface CommandOptions {
    config: SnowpackConfig;
    lockfile: LockfileManifest | null;
}
export declare type LoggerLevel = 'debug' | 'info' | 'warn' | 'error' | 'silent';
export declare type LoggerEvent = 'debug' | 'info' | 'warn' | 'error';
export interface LoggerOptions {
    /** (optional) change name at beginning of line */
    name?: string;
    /** (optional) do some additional work after logging a message, if log level is enabled */
    task?: Function;
}
/** PackageSource - a common interface for loading and interacting with dependencies.  */
export interface PackageSource {
    /**
     * Do any work needed before starting the dev server or build. Either will wait
     * for this to complete before continuing. Example: For "local", this involves
     * running esinstall (if needed) to prepare your local dependencies as ESM.
     */
    prepare(commandOptions: CommandOptions): Promise<ImportMap>;
    /**
     * Load a dependency with the given spec (ex: "/pkg/react" -> "react")
     * If load fails or is unsuccessful, reject the promise.
     */
    load(spec: string, options: {
        config: SnowpackConfig;
        lockfile: LockfileManifest | null;
    }): Promise<Buffer | string>;
    /** Resolve a package import to URL (ex: "react" -> "/pkg/react") */
    resolvePackageImport(spec: string, importMap: ImportMap, config: SnowpackConfig): string | false;
    /** Handle 1+ missing package imports before failing, if possible. */
    recoverMissingPackageImport(missingPackages: string[], config: SnowpackConfig): Promise<ImportMap>;
    /** Modify the build install config for optimized build install. */
    modifyBuildInstallOptions(options: {
        installOptions: EsinstallOptions;
        config: SnowpackConfig;
        lockfile: LockfileManifest | null;
    }): EsinstallOptions;
    getCacheFolder(config: SnowpackConfig): string;
    clearCache(): void | Promise<void>;
}