import { TextDocument } from 'vscode-languageserver-textdocument';
import { SignatureInformation } from 'vscode-languageserver/node';
import { LanguageConfig } from '../plugins/LanguageConfigImpl';
import { SyntaxComponent, Uri } from '../types';
import { DatapackLanguageService } from './DatapackLanguageService';
export declare function onSignatureHelp({ offset, node, uri, service, textDoc, languageConfigs }: {
    uri: Uri;
    offset: number;
    node: SyntaxComponent;
    textDoc: TextDocument;
    service: DatapackLanguageService;
    languageConfigs: Map<string, LanguageConfig>;
}): Promise<{
    signatures: SignatureInformation[];
    activeParameter: number;
    activeSignature: number;
} | null>;