fix: handle the content attribute

[alexander-akait]

This PR contains a:

• bugfix
• new feature
• code refactor
• test update
• typo fix
• metadata update

Motivation / Use-Case

fixes #371

Breaking Changes

No

Additional Info

No

[codecov]

Codecov Report

Merging #372 (b7f1bca) into master (9f2ca5c) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #372   +/-   ##
=======================================
  Coverage   97.81%   97.81%           
=======================================
  Files           7        7           
  Lines         548      548           
  Branches      150      150           
=======================================
  Hits          536      536           
  Misses         12       12           

Impacted Files	Coverage Δ
src/utils.js	97.99% <ø> (ø)

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