another interesting way to understand JS classes is to look at the transpiled Babel output of a class definition and extension [like this](https://babeljs.io/r

another interesting way to understand JS classes is to look at the transpiled Babel output of a class definition and extension [like this](https://babeljs.io/repl/#?babili=false&browsers=&build=&builtIns=false&code_lz=MYGwhgzhAEBiD29oG8BQBIY8B2EAuATgK7B7wEAUAlCqtPdOngBYCWEAdGNALzQDkYfnQYBfESPQBbAJ4AzItmDVaDRgQCmeIgWwDZCpcLXjxqUJBgAhMAWgaAHng3YAJjARJkooA&debug=false&forceAllTransforms=false&shippedProposals=false&circleciRepo=&evaluate=true&fileSize=false&lineWrap=false&presets=es2015%2Ces2016%2Ces2017%2Clatest%2Creact%2Cstage-0%2Cstage-1%2Cstage-2%2Cstage-3%2Ces2015-loose&prettier=false&targets=&version=6.26.0&envVersion= https://babeljs.io/repl/#?babili=false&browsers=&build=&buil...)