global becomes undefined #13027

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1. TimothyGu commented on May 14, 2017

   

   TimothyGu

   on May 14, 2017

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   No it is not a bug. global mirrors global.global, and when you define global.global to a setter-only property, global cannot be read anymore, and typeof naturally returns 'undefined'.
2. macsmac commented on May 14, 2017

   

   macsmac

   on May 14, 2017

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   Forget to say: defineProperty throws error "defineProperty called on non-object". We will log key.

   Object.keys(global).forEach((k) =>{ console.log(k); Object.defineProperty(global, k, {set:console.log}); });

   It logs

   global
   process
   <error>
   
3. mscdex

   added

   questionIssues asking questions about Node.js.Issues asking questions about Node.js.

   on May 14, 2017
4. macsmac commented on May 14, 2017

   

   macsmac

   on May 14, 2017

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   Actually got it, because first key is global we defineProperty on it without getter and it becomes undefined and next key cannot be defined
5. macsmac

   closed this as completedon May 14, 2017