export interface LanguageServerConfig {
    binary: string;
    npmPackages?: string[];
    args?: string[];
    languages: string[];
    rootPatterns?: string[];
    toolchain?: {
        command: string;
        args: string[];
        label: string;
    };
}
export interface InstallResult {
    language: string;
    binary: string;
    alreadyInstalled: boolean;
    dryRun: boolean;
    installCommand?: string;
    packageManager?: string;
    error?: string;
}
export declare const LANGUAGE_SERVERS: Record<string, LanguageServerConfig>;
export declare const SUPPORTED_LANGUAGES: string[];
/**
 * Install a language server for the given language.
 * Returns an InstallResult describing what happened.
 */
export declare function installLang(language: string, server: LanguageServerConfig, cwd: string, dryRun?: boolean): Promise<InstallResult>;
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