//#region src/mapping-score.d.ts
export type Tier = "High" | "Medium" | "Low";
export interface Scored<T> {
  /** Human-readable chips, e.g. `type text`, `name matches "contacts"`. */
  reasons: string[];
  /** Internal — used for ranking and the apply threshold. Never rendered. */
  score: number;
  tier: Tier;
  value: T;
}
/** Tier cut-offs: score >= high → High; >= medium → Medium; else Low. */
export interface Thresholds {
  high: number;
  medium: number;
}
export declare const CONCEPT_TIERS: Thresholds;
export declare const FIELD_TIERS: Thresholds;
export declare const RELATIONSHIP_TIERS: Thresholds;
/** Two concept candidates closer than this are treated as ambiguous. */
export declare const AMBIGUITY_MARGIN = 15;
/** Signal weights. Tuned against fixtures; adjust here, not at call sites. */
export declare const W: {
  readonly nameExact: 50;
  readonly nameSubstring: 25;
  readonly definingColumn: 20;
  readonly hasPrimaryKey: 10;
  readonly hasRows: 10;
  readonly emptyTable: -20;
  readonly fieldNameMatch: 50;
  readonly typeCompatible: 30;
  readonly typeMismatch: -30;
  readonly requiredNotNull: 10;
  readonly fkResolved: 60;
  readonly fkNameHint: 30;
  readonly joinTable: 20;
};
export declare function tierFor(score: number, t: Thresholds): Tier;
export declare function isTextLike(type: string | undefined): boolean;
export declare function isNumericLike(type: string | undefined): boolean;
export declare function isTimestampLike(type: string | undefined): boolean;
/**
 * True when the top two candidates are too close to call. Callers must never
 * one-click apply an ambiguous result — the user picks.
 */
export declare function isAmbiguous(ranked: Array<{
  score: number;
}>): boolean;
//#endregion