/**
 * The event map of a version: it maps a message code and trigger event, such
 * as `"ADT_A04"`, to the ID of the message structure it uses, such as
 * `"ADT_A01"`.
 */
export type EventMap = Readonly<Record<string, string>>;
/** The loader of event maps, one per HL7v2 version. */
export type EventMapStore = Readonly<{
    /**
     * Loads the event map of `version`, or `undefined` when `version` is not
     * bundled. Later loads of the same version resolve the same value.
     *
     * The map has no prototype, so a key read from a message, such as
     * `"__proto__"` or `"constructor"`, has no entry.
     *
     * @throws {Error} When a bundled event map fails to load.
     */
    load(version: string): Promise<EventMap | undefined>;
}>;
/** The loader of event maps. */
export declare const eventMaps: EventMapStore;
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