import type { TCitationSegment } from "../segment-types.js";
import type { TSegmentInstruction, TSegmentInstructionConditional, TSegmentInstructionSegment, TSegmentInstructionSeparator, TSegmentSource } from "./instruction-types.js";
export type TSegmentRole = TCitationSegment["role"];
export type TSegmentStyle = TCitationSegment["style"];
export declare function separator(text: string): TSegmentInstructionSeparator;
export declare function segment(source: TSegmentSource, role: TSegmentRole, style?: TSegmentStyle): TSegmentInstructionSegment;
/** A segment showing a string field of the reference. */
export declare function stringField(field: string, role: TSegmentRole, style?: TSegmentStyle): TSegmentInstructionSegment;
/** A segment showing a date field of the reference, formatted IEEE style. */
export declare function dateField(field: string, role: TSegmentRole): TSegmentInstructionSegment;
/** A segment showing a calendar-date field of the reference, IEEE style. */
export declare function calendarDateField(field: string, role: TSegmentRole): TSegmentInstructionSegment;
/**
 * The year segment: the `year` field as a calendar date, or "(n.d.)" in the
 * same place when the source is undated, as IEEE's Reference Guide asks.
 */
export declare function yearOrUndated(): TSegmentInstructionConditional;
/** A segment showing fixed text. */
export declare function literal(text: string, role: TSegmentRole): TSegmentInstructionSegment;
/** The list of authors that opens most references. */
export declare function authorsLead(field?: string): TSegmentInstructionSegment;
/** A single person that opens a reference, in the authors position. */
export declare function singleAuthorLead(field: string): TSegmentInstructionSegment;
/**
 * Emits `then` only when `field` is present (and, with `checkLength`, is a
 * non-empty array); `otherwise` is emitted exactly when `then` is not.
 */
export declare function whenPresent(field: string, then: TSegmentInstruction[], options?: {
    checkLength?: boolean;
    otherwise?: TSegmentInstruction[];
}): TSegmentInstructionConditional;
/** The optional authors list, followed by `trailing` when present. */
export declare function optionalAuthorsLead(trailing: string): TSegmentInstructionConditional;
/** "[Online]. Available: " followed by the url as a link. */
export declare function onlineAvailable(): TSegmentInstruction[];
/** "Accessed: " followed by the access date. */
export declare function accessedOn(): TSegmentInstruction[];
/** ", doi: " and the DOI, when the reference has one. */
export declare function doiIfPresent(): TSegmentInstructionConditional;
/** ", " and the edition followed by " ed.", when the reference has one. */
export declare function editionIfPresent(): TSegmentInstructionConditional;
/** `lead` and the ISBN, when the reference has one. */
export declare function isbnIfPresent(lead: string): TSegmentInstructionConditional;
/** ", pp. " and the page range, when the reference has one. */
export declare function pagesIfPresent(): TSegmentInstructionConditional;
/** The optional volume, issue and page range of a periodical article. */
export declare function volumeIssuePagesIfPresent(): TSegmentInstructionConditional[];
/** ", ver. " and the version, when the reference has one. */
export declare function versionIfPresent(): TSegmentInstructionConditional;
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