Page 9 - React

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E2E vs. Component Testing in React: Choosing the Right Strategy

Maxim Mironjuk - October 03, 2025

Teams regularly face the question of how much to invest in full end-to-end tests versus isolated component tests. Both approaches check different layers of the application, and anyone who picks only one buys blind spots that sooner or later come back as production bugs.

React Testing/E2E

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React Snapshot Testing: Pitfalls and Better Alternatives

Maxim Mironjuk - September 22, 2025

Snapshot testing promises to automatically catch every unintended change to a component. In practice, huge, unreadable snapshots are often blindly updated with a keystroke instead of being investigated for real regressions. This article shows where snapshot testing genuinely helps and where targeted assertions and small inline snapshots bring far more confidence.

React TypeScript

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React Hook Form with Zod or Yup: A Schema Validation Comparison

Maxim Mironjuk - September 20, 2025

Anyone building forms in React 19 with React Hook Form will eventually need a schema validation library. Zod and Yup solve the same problem with different priorities: TypeScript-first versus an established JavaScript API. This article compares both across type inference, syntax, nested structures, and migration effort.

React Web Performance

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Edge Runtime vs Node Runtime in Next.js: When to Use What

Maxim Mironjuk - September 17, 2025

The edge runtime promises minimal cold start times and global distribution, but gives up central Node APIs in exchange. The Node runtime offers full compatibility, but costs latency for globally distributed users. Deciding deliberately per route gets the best out of both models.

React GraphQl

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REST vs. GraphQL vs. tRPC in React Apps: Choosing the Right Data Layer

Maxim Mironjuk - September 13, 2025

The choice of data layer decides type safety, caching behavior and how fast a React team ships new features. REST remains the pragmatic standard, GraphQL brings flexible queries for complex data models, and tRPC delivers end to end type safety without a schema language, provided backend and frontend live in the same TypeScript monorepo.

JavaScript React

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Next.js Middleware Patterns Explained: Routing, Auth, and Rewrites

Maxim Mironjuk - September 11, 2025

Next.js middleware runs before a route is even rendered, deciding on redirects, rewrites, and headers before Server Components or Client Components become active. Once you understand matcher rules, auth checks, and the limits of the edge runtime, you can build routing logic that stays fast and still behaves robustly.

Magento React

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Syncing React Cart State with the Magento Backend

Maxim Mironjuk - September 09, 2025

The React cart is the component customers watch most closely for inconsistencies. Optimistic updates let the UI respond instantly, while the actual synchronization with the Magento backend runs in the background, including clean conflict resolution and multi-tab reconciliation.

Magento React

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React Checkout Flow: Best Practices for Magento

Maxim Mironjuk - September 05, 2025

A React checkout flow decides in a few seconds whether a customer completes the purchase or abandons it. Clear step structure, instant form validation and robust error handling with payment providers make the difference between a checkout that converts and one that gives away revenue.

React

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useActionState: Structured Error Handling for Server Actions

Maxim Mironjuk - September 05, 2025

Return per-field validation errors, track pending state, and still stay declarative: useActionState bundles the result of a server action into a single, predictable state instead of scattered useState calls.

React

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forwardRef and Forwarding Refs in Reusable Components

Maxim Mironjuk - September 04, 2025

A ref on a custom-written component does not work by default, because React does not automatically forward refs across component boundaries. forwardRef and useImperativeHandle solve this deliberately, without giving up the component's encapsulation.