/**
 * CLI LSP Diagnostic Conversion
 * Convert RillError to LSP Diagnostic format
 */
import type { RillError } from '@rcrsr/rill';
export interface LspDiagnostic {
    readonly range: LspRange | null;
    readonly severity: 1 | 2 | 3;
    readonly code: string;
    readonly source: 'rill';
    readonly message: string;
    readonly suggestions?: string[] | undefined;
}
export interface LspRange {
    readonly start: LspPosition;
    readonly end: LspPosition;
}
export interface LspPosition {
    readonly line: number;
    readonly character: number;
}
/**
 * Convert RillError to LSP Diagnostic format.
 *
 * Constraints:
 * - LSP uses zero-based line/character positions
 * - Severity mapping: Error=1, Warning=2, Info=3
 * - Source is always 'rill'
 * - Returns diagnostic with null range when error has no span
 *
 * @param error - RillError to convert
 * @returns LSP Diagnostic
 */
export declare function toLspDiagnostic(error: RillError): LspDiagnostic;