Reversing an Object.entries conversion

Question

I am using Object.entries in order to get some values out of a nested object and filter it.

obj = Object.entries(obj)
  .filter(([k, v]) => {         


        

Answer 1

For new browsers, use Object.fromEntries:

Object.fromEntries(arr); 

For ES6+, with some spreading it can be a one liner.

arr.reduce((acc,[k,v])=>({...acc,[k]:v}),{}) 

Example:

Object.entries(sampleObject) // Turn object to array
   .reduce((acc,[k,v])=>({...acc,[k]:v}),{}) // Turn it back to object.