/**
 * TS check-sync delegates the comparison to `pie card check-sync`,
 * because the comparator must read both sides and TS code is forbidden
 * from reading `{python: …}` envelopes. The pie side orchestrates:
 *   - reads its own `{python}` data via `build_card_metadata`
 *   - spawns `pieui card dump-metadata`, unwraps `{typescript: …}`,
 *     and runs `compare_metadata` on both.
 *
 * On TS side we just relay stdout/stderr and exit code.
 */
export declare const cardCheckSyncCommand: (componentName: string) => Promise<number>;
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