/**
 * `y_range=` on a `<gen type="pattern">` — the value axis, and required.
 *
 * A drawing carries no units of its own. The same curve leaves one tool running
 * 0..100, another 0..480, a third 0..10002345345, and none of those numbers mean
 * anything until somebody says what the axis is. `y_range` is that statement:
 * the picture's floor is its minimum, the picture's top is its maximum, and
 * nothing leaves the range whatever coordinates were drawn in.
 *
 * It used to be optional, and the alternative was worse than a missing value: a
 * drawing with no declared axis was measured against its own INK, so a line
 * across the middle of a canvas came out as the floor — nothing but zeros — and
 * a ripple of ten units was indistinguishable from a mountain across the whole
 * picture. Both are drawings whose author knew exactly what they meant.
 *
 * The generator refuses without it, but a refusal at run time is not enough: a
 * config that passes `check` and then dies is the exact defect this validator
 * exists to close.
 */
import { type Diagnostic } from '../errors/index.js';
import type { OpenCloseElementContext, SelfClosingElementContext } from '../generated/TDCParser.js';
export declare function checkGenPattern(gen: OpenCloseElementContext | SelfClosingElementContext, diagnostics: Diagnostic[]): void;
//# sourceMappingURL=pattern.d.ts.map