import type { WeightProfile } from './types.js';
/** Compute the recency decay factor for a source given the action and
 *  source timestamps. Timestamps are ISO-8601 strings; the function
 *  parses them and computes age in days. Negative age (future source)
 *  clamps to zero — a source published after the action decays as if
 *  it were produced simultaneously. */
export declare function recencyDecay(tAction: string, tSource: string, profile: WeightProfile): number;
//# sourceMappingURL=recency.d.ts.map