Since I 'vote' with my code - this migration page has been helpful today - and I hope it will help others: https://yarnpkg.com/lang/en/docs/migrating-from-npm/
It took me ~5 mins to migrate all of my code from npm to yarn. But I don't have complex CI tasks either.
I use ncu to check updates every couple of days, sometimes more frequently. To further distance myself from npm, can anyone comment on the pros/cons of github repo paths instead of package names in package.json?
[0] https://www.theregister.co.uk/2016/03/23/npm_left_pad_chaos
[1] https://github.com/npm/registry/issues/255
*edit: formatting