import type { ChatStopReason } from './interface.js';
/**
 * Resolve an 'unknown' stop reason to 'completed' when the model produced text.
 * Providers use this when the stream ended without an explicit finish reason
 * but content was generated.
 */
export declare function resolveCompletedStopReason(stopReason: ChatStopReason, content: string | undefined): ChatStopReason;
/**
 * Build the providerStopReason spread for ChatResponse.
 * Returns { providerStopReason } when the raw value is known, otherwise {}.
 */
export declare function withProviderStopReason(rawStopReason: string | undefined): {
    providerStopReason?: string;
};
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