TypeScript Integration in JavaScript
From the Axios cheat sheet · Advanced Patterns · verified Jul 2026
TypeScript Integration
Type-safe API calls with TypeScript generics
typescript
// Define response types
interface User {
id: number;
name: string;
email: string;
}
interface ApiResponse<T> {
data: T;
message: string;
status: number;
}
// Type-safe request
const response = await axios.get<User[]>('/api/users');
const users: User[] = response.data;
// Custom API client
const api = axios.create({
baseURL: 'https://api.example.com'
});
async function getUsers(): Promise<User[]> {
const { data } = await api.get<User[]>('/users');
return data;
}✅ Use generics to type response.data for full type safety
💡 Create wrapper class to encapsulate API logic and types
🔍 axios.isAxiosError<T> provides type-safe error handling
⚡ Define response interfaces once, reuse across all endpoints
typescripttypesgenericstype-safety