export declare const MAX_OPENAI_STREAM_TOOL_ARGUMENT_BYTES = 1048576;
export declare const MAX_OPENAI_STREAM_TOOL_ARGUMENT_FRAGMENTS = 4096;
export type OpenAIStreamToolArgumentBudget = {
    bytes: number;
    fragments: number;
};
export declare function appendOpenAIStreamToolArgument(budget: OpenAIStreamToolArgumentBudget, chunks: string[], fragment: string): "bytes" | "fragments" | undefined;
export declare function joinOpenAIStreamToolArguments(chunks: readonly string[]): string;
export declare function isJsonObjectText(value: string): boolean;
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