Replace `any` type annotations with more specific types to improve type safety and null handling. The `any` type disables TypeScript's type checking, including null safety checks, making code prone to runtime errors. Use `unknown` as a safer alternative when the type is truly unknown, as it requires type checking before use. When possible, use specific types like `ReactNode`, interfaces, or union types that accurately describe the expected values. Example progression from unsafe to safe typing: ```typescript // Avoid: Disables all type checking let resolve: (value?: any) => void; // Better: Requires type checking before use let resolve: (value?: unknown) => void; // Best: Use specific types when known let resolve: (value?: void) => void; // For React components, use specific types readonly unstable__transformChildren?: (children: ReactNode) => ReactNode; ``` This approach prevents null reference errors by ensuring TypeScript can properly track nullable and undefined values through the type system.