I’ve answered this question several times in different places. Here is an expanded version ;-)

Hey, it's me again with almost the same question.

So now I'm considering moving to Berlin and I would like to find a job there as a frontend developer, I'm afraid to send CV to big companies like MS, Amazon, Here etc because I don't feel I'm good enough, but I definitely find at a job there, so what would be your advice, where to start? could you please share how you found the job in Berlin?

Hi Artem,

I am doing a POC on UTC automation for one of the projects and I am running into some issues and was hoping if you could please take out some time to help me with the same.

I am planning on using this in my office project. We have not decided yet on what to use with Jest. But I am doing a POC and writing these test cases. But with all cases I am running in to a timeout issue

"Timeout - Async callback was not invoked within the 5000ms timeout specified by jest.setTimeout."

I have created gists for as small component

Component
https://gist.github.com/bishwenduk029/a64aef3ac60b240039760697144c9851

Test Case:
https://gist.github.com/bishwenduk029/2d317e0482bab9d952697111e64572b1

If possible can you please have a look at it, and let me know If I am doing something wrong. Any suggestions would be great.

Hi how are you?
I’m trying to build an Auth with React & Redux, but I’m stuck.
Could you help me to resolve this?
Link to my GitHub: https://github.com/martindiiorio/react-auth
Thanks in advanced!

Hi, I like your article. But i'm not find your rss entry.

Is there rss subscription offered?

Thx.

Hi!

Our company is about to expand to Europe, and will open a new office in Berlin. What do you think of the tech scene in Berlin? I read on some blogs that there aren't a lot of tech startups, but that the number of interesting startups / scaleups is growing. Do you agree? How do you get in touch with other software developers outside of works?

Vernon

My first try to answer this question. I’ve realized that it’s not really for beginners and have written another answer.

Hey Artem,
As the maintainer of cypress-axe, do you have a definitive list of the accessibility checks that get completed when cy.checkA11y() is triggered?

I would like to compare the A11y checks covered in cypress-axe to the checks that are covered in Accessibility Insights for Web to see if any are duplicated when completing A11y testing.

tia

Hey, Artem!

Do you have a list of books which you'd recommend to read?

Hi, I'm a just-start frontend developer.
Struggling on how should I test my code, I found your article about modern react testing, and I found it quite helpful. So I think it would be helpful too, to translate it and make more developers could read it.

if you have any opinion, notice me :)

I’m rebuilding my homepage again, and removing this page. Here will be its new home.

Hi, Artem @sapegin !
First of all thank you for react-styleguidist. It was a real pleasure using it in our development.

I know that you're a great photographer :)
I've seen your photos on Unsplash and they are really amazing.

I'm a fan of landscape/street/architecture photography, so I learned a bit about shutter speed, ISO, aperture and bought my first DSLR camera. But I feel I am lacking in knowledge and skills to start.

Could you share some advices/books/resources that helped you at the beginning ?
What resources/books do you recommend to read about photo post-processing ?

Thanks in advance!

books, courses, apps, methods ...?

Hi, Artem!

Currently, I'm creating websites on php + js (both frontend and backend). But I want to switch to frontend development with a bit of UX/UI design.

Can you give advice for mastering UX/UI design?

Coffee with milk? Latte? Espresso? :)

I have an email from Alexey where he asks advice for developers who are just starting their career.

Hi Artem @sapegin, glad I can ask you. I'm following you for a couple of years on twitter, but I missed your moving to Germany, I know a lot of people are moving there, but could you please share your experience? Maybe you can compare living in Russia (Moscow) with Germany.
Why you decided to move?

Thanks in advance!

Hi there! I came here from your blog post on Jest and React testing library https://blog.sapegin.me/all/react-testing-3-jest-and-react-testing-library/

Towards the end you mentioned jest and nock to mock modules. More importantly, I noticed that you mocked the responses on a per-test basis.

This is what I was doing for a while too (similar to mocking fetch), however I started to notice problems with mocking resolved value of API responses on a per-test basis. It works perfectly when you are working with the component that makes the request directly. However, let's say you have a super generic component like App which renders a lot of different components.

When testing App you wouldn't know what requests are going to be made and what to mock unless you trace through the entire component hierarchy and mock things out one by one. You may have all kinds of Child components that make network requests on mount.

A solution might be to use shallow rendering, or adopt the mockist style of TDD by mocking/spying those components but obviously there's a reason why react testing library doesn't encourage this style of TDD.

React testing library seems to follow the classical style of TDD where our units actually exercise their collaborators instead of mocking them out. Therefore, a more appropriate solution seems to be using nock or Mock service worker and defining global handlers for them.

This seems to be a good solution, however, I also faced the problem where sometimes it feels like you are having to reimplement your entire backend.

Any thoughts on this?

Hi Artem,
I was just reading your excellent article on modern react testing.
I'm struggling with the code coverage reports coming out of Jest. Obviously way more complicated than what I can understand, but all I have to do is render one component and check a header and I get 80% coverage on that file and 40% coverage on most of the other components in other TSX files in that library even if not referenced in the the file I'm testing. Not sure if it is because of Typescript, Functional Components, Nrwl Nx, or just the nature of render in React Testing Library. On our Java server code, we look at that coverage closely to see if we've written proper tests.

So my questions to you is if you see same result? Do you care? Have you seen any good articles on this you could pass along? If not, maybe you could do one.

Thanks in advance.

Hey Artem, I recently read your blog https://dev.to/sapegin/why-i-quit-open-source-1n2e and could not help but wonder why are not there tools that can help maintainers automatically classify spam contributions, do auto PR reviews based on the guidelines of the repo, etc. especially now AI can very well do a lot of these tasks to a decent accuracy. Would love to hear your thoughts on AI for solving some of the problems in OSS ecosystem.

Hi, I can see the node target values in the browser console, and I can send some output to the terminal with
cy.task('log','message')
But, I'd like to output the target values from the nodes for each violation. That way I can find the location when running Cypress headless. Could you possibly share an example?

Thanks!

Is it necessary for frontend developer to know backend stuff (databases, servers, e.t.c)? Do you read articles or watch videos on technical themes beyond the frontend?