How to fix Type 'X' is not exported from type definition file in TypeScript

# Look at the declaration file in node_modules
cat node_modules/library-name/index.d.ts

# Or check @types package if applicable
cat node_modules/@types/library-name/index.d.ts

import { someFunction, someValue } from 'library-name';

// Infer return type
type MyType = ReturnType<typeof someFunction>;

// Infer parameter type
type ParamType = Parameters<typeof someFunction>[0];

// Infer type from a value
type ValueType = typeof someValue;

// types/custom.d.ts
export interface MyCustomType {
  // Mirror the structure from the library's source
  id: string;
  name: string;
  // ... other properties
}

{
  "compilerOptions": {
    // Change from Node16/NodeNext to bundler or node
    "moduleResolution": "bundler",
    // Or use the classic node resolution
    "moduleResolution": "node"
  }
}

// Instead of importing from the main entry
// import { InternalType } from 'library-name';

// Try importing from specific subpaths
import { InternalType } from 'library-name/types';
import { InternalType } from 'library-name/dist/types';

## Request: Export [TypeName] type

**Use case:** Describe why you need this type exported

**Current workaround:** Explain how you're working around it

**Impact:** How this affects type safety in your application