This will be accepted value which should be as an array :
Input:

const x = [    
    "name_new",
    "name_test_new",
    "xyz_new",
    "xyz_abc_rest_edit",
]

This is the putout of input, I’m expecting,
Output:

const y = {
    "name":{
      "new":true,
       },
       "name_test":{
      "new":true,
        },
       "xyz":{
    "new":true,
       },
      "xyz_abc_rest":{
    "edit":true,
      },
}

Here Input could be anything similar to a provided array, and the array value should have underscore "_" with data/string input.
and output should be in object format with the provided result.

>Solution :

const x = [
  "name_new",
  "name_test_new",
  "xyz_new",
  "xyz_abc_rest_edit",
]

const obj = {}
for (let item of x) {
  const split = item.split('_');
  let key = "";
  for (let i = 0; i < split.length - 1; i++) {
    key += `${split[i]}_`
  }
  obj[key.substring(0, key.length - 1)] = {
    [split[split.length - 1]]: true
  }
}

console.log(obj)