Use Babel as Watcher in PhpStorm
First, we need to install babel-cli globally
Open terminal and say
npm install -g @babel/core @babel/cli
Then, you will need a preset that babel will follow
for now, we will use preset-env:
npm install -g @babel/preset-env
We will check if / where preset-env is installed
which @babel/preset-env
It may return nothing, but in my OS X, the location was:
/usr/local/lib/node_modules/@babel/preset-env
Make sure that in Program you may have
/usr/local/lib/node_modules/@babel/cli/bin/babel.js
Then in Arguments
$FilePathRelativeToProjectRoot$ --no-babelrc --out-dir dist --source-maps --presets "/usr/local/lib/node_modules/@babel/preset-env"