/**
 * OpenKernel — Backend output parsing helpers
 *
 * Third-party CLIs emit different JSON shapes (and different versions change
 * them), so parsing is deliberately defensive: try JSON, pull the common
 * fields, and always fall back to raw text. Nothing here throws.
 */
export declare function tryJson(line: string): Record<string, unknown> | null;
export declare function str(v: unknown): string | undefined;
/** Append a line to an accumulating text body. */
export declare function appendLine(acc: string | undefined, line: string): string;
/**
 * Pull assistant text out of a wide range of JSON event shapes:
 * Anthropic/Claude content arrays, plain `content` strings, and the usual
 * `text`/`response`/`result`/`message` fields other CLIs use.
 */
export declare function extractText(obj: Record<string, unknown>): string | undefined;
/** Common session-id keys across the CLIs, plus a bare-UUID fallback. */
export declare function extractSessionId(obj: Record<string, unknown>): string | undefined;
export declare function sessionIdFromText(line: string): string | undefined;