/**
 * @internal
 */
export declare function _WarnImport(name: string, warnOnce?: boolean): string | undefined;
/**
 * Enables or disables console warnings when generated side-effect stubs are called.
 * Warnings are disabled by default because internal code may probe optional augmented APIs.
 * @param enabled - Whether missing side-effect stub calls should emit one-time warnings.
 */
export declare function SetMissingSideEffectWarningsEnabled(enabled: boolean): void;
/**
 * Runs a callback while missing side-effect stub warnings are suppressed.
 * @param callback - The callback to run with warnings suppressed.
 * @returns The callback result.
 */
export declare function SuppressMissingSideEffectWarnings<T>(callback: () => T): T;
/**
 * Interface for functions that are side-effect stubs.
 * Used to type-safely check if a method is a stub without using `any`.
 * @internal
 */
export interface ISideEffectStub {
    /** Marker property indicating this is a side-effect stub */
    __isSideEffectStub: true;
}
/**
 * Returns a stub function that acts as a placeholder for augmented methods that
 * require a side-effect import. The stub is tagged with `__isSideEffectStub` so
 * that feature-detection code can check `_IsSideEffectImplemented()` before calling.
 *
 * The stub does NOT warn by default because internal engine code frequently calls
 * augmented methods as feature checks (e.g., `getBoundingBoxRenderer?.()` in the
 * render loop). Warnings would fire every frame for features the user never requested.
 *
 * If the user actually tries to use the returned value (which is undefined), they
 * will get a clear TypeError at the point of use.
 *
 * @param className - The class name (for diagnostic purposes)
 * @param methodName - The method name (for diagnostic purposes)
 * @param warn - If true, emit a one-time console warning when the stub is called.
 *              Use this only for methods that are never called internally as feature checks.
 * @internal
 */
export declare function _MissingSideEffect(className: string, methodName: string, warn?: boolean): (...args: unknown[]) => void;
/**
 * Checks whether a value is a side-effect stub (i.e., a placeholder function
 * generated by _MissingSideEffect). Use this instead of truthiness checks when
 * doing feature detection on methods that may be stubbed for tree-shaking.
 * @param fn The function/method to check
 * @returns true if the function is a real implementation (not a stub or undefined/null)
 * @internal
 */
export declare function _IsSideEffectImplemented(fn: unknown): boolean;
/**
 * Returns a property descriptor that acts as a placeholder for augmented properties
 * that require a side-effect import. The getter returns undefined (allowing pure code
 * to feature-detect by checking truthiness), and the setter replaces the stub with a
 * real data property on the instance.
 * @internal
 */
export declare function _MissingSideEffectProperty(className: string, propName: string): PropertyDescriptor;