/** The raw segments of a version, as `segments.json` holds them. */
export type SegmentModule = Readonly<{
    segments: readonly SegmentProfile[];
}>;
/** Segment metadata from the HL7v2 specification. */
export type SegmentProfile = Readonly<{
    id: string;
    title: string;
}>;
/**
 * Compiled segment definition for a version.
 * Returned by `loadSegments()`.
 */
export type SegmentDefinition = Readonly<{
    /** O(1) lookup of segment profile by segment ID (e.g., "MSH", "PID"). */
    byId: ReadonlyMap<string, SegmentProfile>;
}>;
/**
 * Load and compile all segment definitions for an HL7v2 version.
 *
 * Resolves `undefined` when `version` is not bundled. Later loads of the same
 * version resolve the same value.
 *
 * @throws {Error} When a bundled version's segments fail to load.
 */
export declare const loadSegments: (version: string) => Promise<SegmentDefinition | undefined>;
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