It would be nice if the dependencies on js-beautify was optional as it brings quite a few transitive dependencies:
βββ¬ js-beautify@1.13.0
β βββ¬ config-chain@1.1.12
β β βββ ini@1.3.5
β β βββ proto-list@1.2.4
β βββ¬ editorconfig@0.15.3
β β βββ commander@2.20.3
β β βββ¬ lru-cache@4.1.5
β β β βββ pseudomap@1.0.2
β β β βββ yallist@2.1.2
β β βββ semver@5.7.1
β β βββ sigmund@1.0.1
β βββ glob@7.1.6 deduped
β βββ mkdirp@1.0.4
β βββ¬ nopt@5.0.0
β βββ abbrev@1.1.1
and it's not strictly required for producing valid ES module output.