export declare const KNOWN_EFFORT_LEVELS: readonly ["none", "minimal", "low", "medium", "high", "max", "xhigh"];
export type EffortLevel = typeof KNOWN_EFFORT_LEVELS[number];
export declare function normalizeEffortLevel(value: string): EffortLevel | undefined;
export interface PromptEffortPrefixResult {
    text: string;
    effort?: EffortLevel;
}
export declare function stripPromptEffortPrefix(text: string): PromptEffortPrefixResult;
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