String to JavaScript JSON/Object

I have string like array and object want to convert it to pure javascript object or JSON.

My string example:

"`{keyOne: valueOne, KeyTow: [10, true, null, 10%], keyThree: {hello: hi}}`"

I found a solution converting string to JSON here https://stackoverflow.com/a/42907123/4578250

the result with above solution is:

{"keyOne": "valueOne", "KeyTow": [10, true, null, "10"%], "keyThree": {"hello": "hi"}}

I want the result like:

{"keyOne": "valueOne", "KeyTow": [10, true, null, "10%"], "keyThree": {"hello": "hi"}}

But I’m not able to convert the string with percentage symbol. any help will be appreciated.

Answer

Just quote all alphanumeric sequences, except for those that are true, false, null, or a number:

let s = "`{keyOne: valueOne, KeyTow: [10, true, null, 10%], keyThree: {hello: hi}}`"

let r = s.replaceAll('`', '').replaceAll(/([w%]+)/g, m =>
  m.match(/^d[d.]*$/) || ['true','false','null'].includes(m) ? m : `"${m}"`)

console.log(JSON.parse(r))