npm package "exports" adoption continues to grow! Node.js v10 is the last version of Node without support, but its end-of-life date is approaching (4/30/2021)
Interesting thread showing how flexible this new standard is, for better and for worse:
All JS bundlers + runtimes now support Package Exports.
As you add the "exports" field to your npm module, please remember: modules referenced via "exports" can include modern syntax.
Adding exports is a semver-major change. It's a great opportunity to publish modern code too.