Best way to process an uploaded JSON file locally (client) using JS

Question

I want to upload a HAR file (which is based on the JSON format) and filter out all the unwanted private data like cookies etc. Basically, I need to create a new JSON file with the data from a selected group of fields and all of this has to happen locally on the client side (browser) before sending it to the server.

What is the best way to go about this using JS?

Answer 1

You can get the file as a string then use JSON.parse() to load it as an object. Upon which you can transform it as you please.

I prefer using:

Object.entries(obj).reduce((acc,curr)=>{
  // do you transform here
},{});