What will the program output when calling the chain of functions?
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Frontend
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What will the two console.log outputs in the example with objects a, b, and c, used as object keys?
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When will the useEffect in the given example run once, and when will the cleanup be executed?
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In which cases should || be used, and in which — ???
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What recent ECMAScript features, methods, or APIs have you used?
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Which command should be used to install dependencies when package-lock.json is present and should this file be committed?
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What irritated you the most during code review? What did you most often argue about in pull requests?
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How to get an equivalent of Promise.resolve(1) without calling the Promise class?
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What is SemVer?
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Why do React component re-renders occur when working with Redux and how does the component learn about state changes?
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Have you had experience working with private NPM packages? Tell us about it.
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What would be roughly in the declaration file for such a library?
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Why are objects used as keys of a regular object converted to the string "[object Object]"? Does string conversion happen for other keys, like numbers 7?
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What dependencies other than dependencies are there in package.json and what do they mean?
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How to make the value of a property of an object declared with const appear as 1 in the console after change?
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Have you ever used Object.freeze in practice and for what purpose?
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How to type a connected JavaScript library if you do not have access to its source code?
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Was your idea rewarded or implemented? Did you follow its further fate?
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Why is the React hook useCallback needed?
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Have you ever encountered currying in practice?
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