import { FeatureName } from './feature-registry';
/**
 * Register a feature prop name as a recognised `FeatureProps` key. Called by
 * built-in pre-registration (this module's bottom) and by third-party feature
 * secondary entries that augment `FeatureConfig`.
 *
 * @internal Plugin API
 */
export declare function registerFeaturePropKey(name: FeatureName): void;
/**
 * Snapshot of all currently-registered feature prop keys, in registration
 * order. Returned as a frozen array so callers cannot mutate the registry by
 * reference. The snapshot is cached and only rebuilt when the registry
 * changes — `<DataGrid>` calls this during render, so per-call allocation
 * is avoided.
 *
 * @internal `<DataGrid>` extract/sync use only.
 */
export declare function getFeaturePropKeys(): readonly FeatureName[];
/**
 * Test-only: clear all registered keys. Lets specs assert pre-registration
 * behaviour in isolation. Production code never calls this.
 *
 * @internal
 */
export declare function clearFeaturePropKeys(): void;
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