Avoid null error of package

[shogohida]

Closes: #11491

[medikoo]

@shogohida thanks for giving that a spin, Note that CI failed

[shogohida]

@medikoo
I thought adding ? is a way to avoid an error so I don't know how I should fix test failures (they are based on the change I made in this PR)....

[medikoo]

@shogohida you've used syntax that's not supported in Node.js v12, which we need to support.

[shogohida]

@medikoo
Oh, understood. How about this change?

3445cad

[codecov]

Codecov Report

Base: 85.65% // Head: 85.66% // Increases project coverage by +0.00% 🎉

Coverage data is based on head (3445cad) compared to base (a501918).
Patch coverage: 100.00% of modified lines in pull request are covered.

❗ Current head 3445cad differs from pull request most recent head b6ca394. Consider uploading reports for the commit b6ca394 to get more accurate results

Additional details and impacted files

@@           Coverage Diff           @@
##             main   #11506   +/-   ##
=======================================
  Coverage   85.65%   85.66%           
=======================================
  Files         314      314           
  Lines       13120    13125    +5     
=======================================
+ Hits        11238    11243    +5     
  Misses       1882     1882           

Impacted Files	Coverage Δ
lib/plugins/package/package.js	95.83% <100.00%> (ø)
...ns/aws/package/compile/events/api-gateway/index.js	100.00% <0.00%> (ø)
lib/plugins/aws/package/compile/events/kafka.js	98.73% <0.00%> (+0.08%)	⬆️

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[medikoo]

@shogohida that looks better. Still CI continues to fail. This time issue is that proposed change doesn't match Prettier formatting

[shogohida]

@medikoo
Sorry for not running prettier and lint locally. I fixed the code again by running them so please check the change I made

b6ca394

[medikoo]

Thank you @shogohida 👍

[shogohida]

Thanks for your quick review! Hope to contribute more!