Class RelationBuilder<E>

new RelationBuilder<E extends EntityMap>(): RelationBuilder<E>

belongsTo(
    source: keyof E & string,
    alias: string,
    opts: {
        mapGet: (input: Record<string, unknown>) => Record<string, unknown>;
        target: keyof E & string;
    },
): this

build(): RelationsConfig

hasMany(
    root: keyof E & string,
    alias: string,
    opts: {
        listPattern: string;
        mapCreate?: (input: Record<string, unknown>) => Record<string, unknown>;
        target: keyof E & string;
    },
): this

hasManyThrough(
    root: keyof E & string,
    alias: string,
    opts: {
        listPattern: string;
        mapAdd?: (input: Record<string, unknown>) => Record<string, unknown>;
        mapTargetKey: (
            throughItem: Record<string, unknown>,
        ) => Record<string, unknown>;
        target: keyof E & string;
        through: keyof E & string;
    },
): this