/** Field readers for grok's loosely-typed JSON lines. Every grok surface — the
 *  headless stream, the PTY transcript, the on-disk session files — carries the
 *  same shapes with optional, renamed and nested fields, so pulling a value out
 *  of one is its own concern, kept apart from deciding what a line MEANS.
 *  Extracted from grok.ts; the bodies are unchanged. */
export declare function asRecord(value: unknown): Record<string, unknown> | null;
export declare function isReasoningType(value: unknown): boolean;
export declare function stringField(obj: Record<string, unknown>, keys: string[]): string | undefined;
export declare function stripReasoningMarkup(text: string): string;
export declare function compactText(text: string, max?: number): string;
export declare function safeJsonSnippet(value: unknown, max?: number): string | undefined;
export declare function toolNameFromGrokUpdate(update: Record<string, unknown>): string | undefined;
export declare function planStatusFromGrokUpdate(update: Record<string, unknown>): string | undefined;
export declare function extractError(obj: Record<string, unknown>): string | undefined;
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