Zeke Sikelianos recently shared a tweet the describes the tee command which I've never heard of. It can be used to write data to files and continue piping it to something else.
Articles – Page 127
Keep writing, writing, writing ...
In ES6 the static method isNaN was added to the Number prototype. It looks the same behaves slightly different...
I learned how the '--fixup' and '--autosquash' params can improve your git workflow.
I learned about an edge case in 'Array.prototype.indexOf' which is fixed in 'Array.prototype.includes'
I learned how to compare strings in a sane manner using 'String.prototype.localCompare'.