/**
 * HTML detection for ADO large-text fields.
 *
 * ADO supports both HTML and Markdown for long-text fields. Sync only
 * works against markdown, so before pulling (or pushing) we auto-detect
 * HTML and either convert it or report it as skipped.
 *
 * This module is intentionally generic — it no longer maintains a fixed
 * list of "additional" custom fields. Callers pass in the refname list
 * they care about (usually derived from the loaded template).
 */
/**
 * Standard ADO large-text fields with native markdown support.
 */
export declare const STANDARD_LARGE_TEXT_FIELDS: readonly ["System.Description", "Microsoft.VSTS.Common.AcceptanceCriteria", "Microsoft.VSTS.TCM.ReproSteps"];
/**
 * Return the list of large-text fields to check for a work item. Combines
 * the standard set with any caller-supplied custom refnames (from the
 * loaded template).
 */
export declare function getAllLargeTextFields(customRefnames?: string[]): string[];
export declare function isHtmlContent(content: string | null | undefined): boolean;
export type FieldFormat = 'markdown' | 'html' | 'not_present';
export interface FieldFormatResult {
    description: 'markdown' | 'html';
    acceptanceCriteria: 'markdown' | 'html';
    reproSteps: 'markdown' | 'html' | 'not_present';
    ready: boolean;
    warnings: string[];
    /** Format for each custom body field, keyed by refname. */
    additionalFields: Record<string, FieldFormat>;
    details: {
        descriptionLength: number;
        acceptanceCriteriaLength: number;
        reproStepsLength: number;
    };
}
export declare function checkFieldFormats(workItem: {
    fields?: {
        'System.Description'?: string;
        'Microsoft.VSTS.Common.AcceptanceCriteria'?: string;
        [key: string]: any;
    };
}, additionalRefnames?: string[]): FieldFormatResult;
export declare function getConversionInstructions(): string;
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