Do not produce and check npm requirements multiple times

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 98.30%. Comparing base (0cc8d48) to head (a8fb477). Report is 1 commits behind head on 0.4.x.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## 0.4.x #2136 +/- ## ======================================= Coverage 98.30% 98.30% ======================================= Files 358 358 Lines 22702 22705 +3 Branches 1055 1056 +1 ======================================= + Hits 22317 22320 +3 Misses 241 241 Partials 144 144 ```

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