trying to convert array of list to object?-CodePudding

i am trying to convert array key/value pair to an object using map and formEntries function i am getting an error message:'Object.fromEntries is not a function' any idea about the fix

main.js

  const data = {}
  const channelsMap = new Map(details.channels);
    const channels = Object.fromEntries(channelsMap);
  data = channels;

expected output

data : {
 channels: {
   "EM": true,
   "SMS": false
}
}

data

  { details: {
       "channels": [
          {
            "channelType": "EM",
            "isActive": "true"
          },
          {
            "channelType": "SMS",
            "isActive": "false"
          }]
    }

CodePudding user response：

You need to reduce the details.channels array into an object where the channelType is the key and the isActive is the value.

const original = {
  details: {
    channels: [
      { channelType: "EM"  , isActive: true  },
      { channelType: "SMS" , isActive: false },
    ]
  }
};

const transformed = {
  data: {
    channels: original.details.channels
      .reduce((acc, { channelType, isActive }) =>
        ({ ...acc, [channelType]: isActive }), {})
  }
};

console.log(transformed);

.as-console-wrapper { top: 0; max-height: 100% !important; }

CodePudding user response：

Upgrading your Node version to something above v12.0.0 should do it. This method isn't included in your current Node version. Documentation here.

CodePudding user response：

first is not allowed to use const when you want to change the value , second this is the code to expected output :

let data = {channels:details.channels.map(channel => ({[channel.channelType] : JSON.parse(channel.isActive) }))};

CodePudding user response：

try this

 var data={data:{channels: Object.assign(...olddata.details.channels.map(
          obj=> ({[obj.channelType]: JSON.parse(obj.isActive)})))}};

data

{
    "data": {
        "channels": {
            "EM": true,
            "SMS": false
        }
    }
}