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    I've released this solution as a npm package: npmjs.com/package/throwable
    – JoWie
    Commented Jun 30, 2015 at 22:06
  • 1
    Incredibly elegant solution, thanks for sharing! One variation : new MyErr (arg1, arg2, new Error()) and in MyErr constructor we use Object.assign to assign the last arg's properties to this Commented Jul 24, 2016 at 15:50
  • I like this. You bypass a limitation by using encapsulation instead of inheritance. Commented Mar 4, 2020 at 10:27