import { type Connection, type Diagnostic as LspDiagnostic } from 'vscode-languageserver/node.js';
import { type EmitIrParams, type EmitIrResponse, type ProtocolCapability } from '@memoarchitect/tools';
export declare const IMPLEMENTATION_NAME = "sysmlc";
export declare function protocolCapability(version?: string): ProtocolCapability;
export declare class SysmlcServer {
    private readonly version?;
    private readonly projects;
    constructor(version?: string | undefined);
    private state;
    /**
     * Answer `memo/emitIr`, or refuse to answer stale.
     *
     * The check happens after the work, not before it: a revision is superseded
     * by whatever arrived *while* it was compiling, and that is precisely the
     * window this rule exists to close. Handing back the finished-but-old model
     * would put a picture on the canvas of a revision the user has already
     * edited past, with nothing to tell them so.
     */
    emitIr(params: EmitIrParams): Promise<EmitIrResponse>;
    /** Syntax diagnostics for one open document, in LSP's own shape. */
    documentDiagnostics(text: string): Promise<LspDiagnostic[]>;
    /** Wire the server onto a connection. Split out so tests can drive it. */
    listen(connection: Connection): void;
}
/** Entry point for `memo-sysmlc serve --stdio`. */
export declare function serveStdio(version?: string): void;
/** Read this package's own version, for `--version` and the handshake. */
export declare function packageVersion(): string | undefined;
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