/**
 * Warn once per unique message, in development only. Use it for degenerate-data
 * misuse the kit otherwise resolves silently (an empty series, a value outside
 * the supported range). It is a no-op when `condition` is false or in production,
 * and it repeats a given message at most once.
 *
 * @param condition Whether the misuse is present; the warning fires only when true.
 * @param message   The console text, formatted `[canvas] <Component />: <problem and effect>`.
 */
export declare function devWarn(condition: boolean, message: string): void;
/**
 * Clear the once-per-message cache. Intended for tests: the dedup is process-wide,
 * so a warning already fired by one test (or one test file) is otherwise swallowed
 * when a later test asserts that the same message fires. Call it before each such
 * assertion to make the once-per-message contract deterministic.
 */
export declare function resetDevWarnings(): void;
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