/**
 * Validation for `<gen type="stat">` — one number for the whole run.
 *
 * The same two things `running` needs, for the same two reasons: it has to say
 * WHAT to summarise (`of=`) and HOW (`op=`), and the column it reads has to be
 * declared ABOVE it, because the statistic is built in declaration order out of
 * a column that already exists.
 *
 * The declaration-order complaint is TDC240, shared with `running` on purpose —
 * it is the same rule with the same fix, and a second code for it would only
 * make the error reference longer without telling a reader anything new.
 */
import type { Diagnostic } from '../errors/index.js';
import type { OpenCloseElementContext, SelfClosingElementContext } from '../generated/TDCParser.js';
/** Every attribute a statistic cannot do without, and the ones it can only have one way. */
export declare function checkGenStat(gen: OpenCloseElementContext | SelfClosingElementContext, declaredAbove: readonly string[], diagnostics: Diagnostic[]): void;
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