import { type BodyId, type Chart, type Engine, type Zodiac } from "./chart.js";
import { type AspectPhase } from "./electional.js";
/** A transiting body aspecting a natal point. */
export interface TransitHit {
    transit: string;
    natal: string;
    aspect: string;
    orb: number;
    phase: AspectPhase;
    strength: number;
    /** Natal house the transiting body occupies (by natal cusps). */
    natalHouse: number;
}
/** An inter-chart aspect between person A's body and person B's body. */
export interface SynastryAspectHit {
    a: string;
    b: string;
    aspect: string;
    orb: number;
    strength: number;
}
export interface SynastryOverlays {
    /** Person A's bodies in person B's houses. */
    aInB: Record<string, number>;
    /** Person B's bodies in person A's houses. */
    bInA: Record<string, number>;
}
/** A composite-chart body placement (midpoint method). */
export interface CompositePlacement {
    body: string;
    lon: number;
    sign: string;
    signDeg: number;
}
/**
 * Transiting bodies aspecting a natal chart at `transitJd`. Natal longitudes are
 * fixed; phase reflects the transiting body's motion toward the natal point.
 */
export declare function transitAspects(natal: Chart, engine: Engine, transitJd: number, opts?: {
    maxOrb?: number;
    zodiac?: Zodiac;
    orbs?: Record<string, number>;
    bodies?: BodyId[];
}): TransitHit[];
/**
 * Inter-chart aspects between two natal charts (static snapshot; both speeds 0).
 */
export declare function synastryAspects(chartA: Chart, chartB: Chart, maxOrb?: number, orbs?: Record<string, number>): SynastryAspectHit[];
/** House overlays both ways between two charts. */
export declare function synastryOverlays(chartA: Chart, chartB: Chart): SynastryOverlays;
/**
 * Midpoint-composite placements for `bodies` from two birth instants.
 */
export declare function compositePlacements(engine: Engine, jdA: number, jdB: number, bodies?: BodyId[], zodiac?: Zodiac): CompositePlacement[];