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Discussion on: How to Escape Callback Hell with JavaScipt Promises

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Simon Aronsson

One thing worth noting regarding the shortform though, is that

fightTheDemogorgon()
  .then(rollForDamage)

actually becomes something along the lines of

fightTheDemogorgon()
   .then(function(result) {
   });

rather than

fightTheDemogorgon()
   .then((result) => ...);

which might come with unintended side effects to function scoping and what this actually points to.