import type { ITtscCompilerContext } from "./structures/ITtscCompilerContext";
/** Per-call controls for a resident transform or update request. */
export interface TtscServiceRequestOptions {
    /** Abort this call before it receives a reply. */
    signal?: AbortSignal;
}
/**
 * Resident, incremental transform service for the `ttsc` TypeScript-Go
 * pipeline.
 *
 * Where {@link TtscCompiler.transform} spawns a fresh process and recompiles the
 * whole project on every call, `TtscService` keeps one long-lived host warm: it
 * compiles the project once and then answers per-file transform requests from
 * that warm program. A single service instance transforms many files (a watch
 * server, an editor session, a codegen tool) while paying the project compile
 * once instead of once per file. Sharing one host across separate worker
 * processes (a Metro worker pool) is tracked in samchon/ttsc#255.
 *
 * The shape mirrors a legacy TypeScript `LanguageService`: construct it against
 * a project context, ask it to transform individual files, and dispose it when
 * done. Construction is synchronous (it launches the host); the host compiles
 * in the background, so the first {@link transformFile} resolves once that
 * compile lands.
 *
 * Resident mode runs through the linked-plugin shared host, so the project must
 * declare at least one transform-stage plugin; the constructor throws
 * otherwise. It does not run check-stage plugins (unlike
 * {@link TtscCompiler.transform}); only the program's own type-checking gates an
 * {@link updateFile}.
 */
export declare class TtscService {
    private readonly resident;
    private readonly projectRoot;
    /**
     * Create a service bound to the given project context and launch its resident
     * host. The context is the same shape {@link TtscCompiler} accepts; it is not
     * replaceable per call.
     */
    constructor(context?: ITtscCompilerContext);
    /**
     * Return the transformed TypeScript source for one file, or `undefined` when
     * the resident program does not contain it (for example a file excluded from
     * the tsconfig). A relative `fileName` is resolved against the project root.
     *
     * Rejects when the resident host failed to compile the project; the rejection
     * carries the host's diagnostics so callers can surface a real build error.
     */
    transformFile(fileName: string, options?: TtscServiceRequestOptions): Promise<string | undefined>;
    /**
     * Apply new in-memory content for one file and re-transform the project, so a
     * subsequent {@link transformFile} reflects the edit without restarting the
     * host. Returns whether the re-transform succeeded; `false` means the edit
     * did not compile and the previous transform is still in effect. A relative
     * `fileName` is resolved against the project root.
     */
    updateFile(fileName: string, content: string, options?: TtscServiceRequestOptions): Promise<boolean>;
    /** Terminate the resident host and reject any in-flight requests. */
    dispose(): void;
    private absolutePath;
}