import { type ChatCompletionAssistantMessageParam, type ChatCompletionFunctionMessageParam, type ChatCompletionMessageParam, type ChatCompletionToolMessageParam } from 'openai/resources';
export declare const isAssistantMessage: (message: ChatCompletionMessageParam | null | undefined) => message is ChatCompletionAssistantMessageParam;
export declare const isFunctionMessage: (message: ChatCompletionMessageParam | null | undefined) => message is ChatCompletionFunctionMessageParam;
export declare const isToolMessage: (message: ChatCompletionMessageParam | null | undefined) => message is ChatCompletionToolMessageParam;
export declare function isPresent<T>(obj: T | null | undefined): obj is T;
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