export type PromptContribution = {
    mode: "none";
} | {
    mode: "skip";
} | {
    mode: "append";
    prompt: string;
} | {
    mode: "replace";
    prompt: string;
};
export declare function nonePromptContribution(): PromptContribution;
export declare function appendPromptContribution(prompt: string | undefined): PromptContribution;
export declare function replacePromptContribution(prompt: string | undefined): PromptContribution;
export declare function resolvePromptContribution(contributions: PromptContribution[]): PromptContribution;
export declare function composePrompt(currentPrompt: string | undefined, contribution: PromptContribution): string | undefined;
export declare function buildPromptResult(currentPrompt: string | undefined, contribution: PromptContribution): {
    systemPrompt: string;
} | undefined;
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