merge from arlac77/npm-package-template-esm-only

[arlac77]

package.json

• chore(scripts): cover@#overwrite c8 -x 'tests/**/*.mjs' --temp-directory build/tmp ava && c8 report -r lcov -o build/coverage --temp-directory build/tmp
• chore(engines): node@>=12.11.1

[codecov]

Codecov Report

Merging #375 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #375   +/-   ##
=======================================
  Coverage   90.19%   90.19%           
=======================================
  Files          13       13           
  Lines        2274     2274           
  Branches      239      239           
=======================================
  Hits         2051     2051           
  Misses        223      223

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[arlac77]

🎉 This PR is included in version 4.0.7 🎉

The release is available on:

• npm package (@latest dist-tag)
• GitHub release

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