import { FUGLE_MARKETDATA_WS_SUPPORTED_VERSIONS } from '../constants';
export type WebSocketProduct = keyof typeof FUGLE_MARKETDATA_WS_SUPPORTED_VERSIONS;
export type WebSocketVersion = typeof FUGLE_MARKETDATA_WS_SUPPORTED_VERSIONS[WebSocketProduct][number];
/**
 * Per-product form. Each product is narrowed to the versions it actually
 * serves, so `{ stock: 'v1.1' }` is a compile-time error. A product left out
 * of the map — including the empty map — gets that product's latest.
 */
export type WebSocketVersionMap = {
    [P in WebSocketProduct]?: typeof FUGLE_MARKETDATA_WS_SUPPORTED_VERSIONS[P][number];
};
/**
 * The `version` option: always a per-product map.
 *
 * A bare version string used to be accepted as "this version for every
 * product", but which product it applied to wasn't known until a client was
 * taken off the factory, so an unsupported pairing only surfaced then — and
 * with the products serving different version sets, the only scalar that never
 * throws is the one every product happens to share. The map form says the same
 * thing without the trap.
 */
export type WebSocketVersionOption = WebSocketVersionMap;
/**
 * Resolve the streaming version for a product from the `version` option.
 *
 * Omitted entirely, an empty map, or omitted for this product all mean the same
 * thing: that product's latest. Nothing is ever silently clamped — asking for a
 * version a product doesn't serve throws rather than quietly handing back an
 * older one.
 */
export declare const resolveVersion: (product: WebSocketProduct, version?: WebSocketVersionOption) => string;
/** Appended to `baseUrl` rejections, pointing at the option that owns the version. */
export declare const VERSION_OPTION_HINT = "The version comes from the `version` option, e.g. version: { futopt: 'v1.1' }.";