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Discussion on: 5 Uses for the Spread Operator

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Replies for: What is the way you always use to prevent error when data is null or undefined? For my case, I always face this when 'initVar' is null or undefined...

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Lukáš Doležal • • Edited

Maybe you could actually use the spread to start with default values and override with initVar:

const { aaa: { bbb, ccc } } = {
  aaa: { 
    bbb: "default bbb", 
    ccc: "default ccc", 
    ...(initVar && initVar.aaa) 
  }
}

But not sure if that is really useful in maybe more complex deconstructions? :D