Frontend

If you consider optimization in terms of a Vue component, what would you pay attention to and what tools would you use?

Tell me about the event loop in JavaScript.

We see that SSR does not respond for 2 seconds. What options are there to improve this?

What will happen when two types intersect if a field with the same name has type string in one and number in the other?

JavaScript: what is the difference between `prototype` and `__proto__`?

Case: it is necessary to implement smooth animation of a car on the map. Telemetry (latitude, longitude, angle) comes twice a second, the car jumps between coordinates. How would you implement this?

Describe a complex trade-off you have faced.

What new hooks appeared in React 18?

Tell us about the lifecycle of rendering in React 18. Concurrent mode, startTransition, Suspense, useDeferredValue.

You mentioned UI-kit. What component was the most complex or interesting to implement, and which posed the biggest challenge?

Tell me more about the migration from Angular 10 to 16 — how did you do it, what stages were involved?

Have you worked with Kafka or similar message brokers?

If `Proxy` is so good, why does Vue 3 still have `ref`?

How often do you have daily and other regular team meetings (grooming, retro, sprint planning)?

// It is necessary to move the re-render logic to a separate external hook, // which allows working with the timer from outside (for example, stopping it after 10 seconds). // Create a new RandOnce component based on the Rand component, // which when used in App // will not update the random number every 3 seconds, but will output a random number only once.

Tell me about the Event Loop: how does it work, what are microtasks and macrotasks?

Middle+

IT One

What is the reduction in server load when using CSR compared to SSR?

How to determine the shortest distance from the user's geolocation to a given point?

Tell me about the rendering modes in Next.js: SSR, SSG, ISR — what are their differences?

How does Fiber work and how is prioritization (scheduler) structured in React?