export declare function isPlainObject(value: unknown): value is Record<string, unknown>;
/** Checks if a value is a Node.js readable stream (has pipe and on methods). */
export declare function isNodeReadable(b: unknown): boolean;
export type { Request } from '@wrongstack/core/types';
import type { Request } from '@wrongstack/core/types';
/** Strips `cache_control` from message blocks in a system prompt. */
export declare function stripCacheControl(system: Request['system']): Request['system'];
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