import { type ChipMeta, type StatuslineItem } from '../components/statusline-picker.js';
export type StreamChipAction = {
    type: 'statuslineChipShow';
    key: StatuslineItem;
    expiresIn: number;
} | {
    type: 'statuslineChipExpire';
    key: StatuslineItem;
};
export declare function computeStreamChipActions(input: {
    brainPromptNow: boolean;
    brainPromptPrev: boolean;
    enhanceNow: boolean;
    enhancePrev: boolean;
    visibleChipKeys: readonly StatuslineItem[];
}): StreamChipAction[];
export declare function computeExpiredChipKeys(chips: readonly ChipMeta[], now?: number): StatuslineItem[];
export interface UseStreamChipExpirationOptions {
    brainPrompt: unknown;
    enhance: unknown;
    visibleChips: readonly ChipMeta[];
    dispatch: (action: StreamChipAction) => void;
}
export declare function useStreamChipExpiration({ brainPrompt, enhance, visibleChips, dispatch, }: UseStreamChipExpirationOptions): void;
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