npm install safe-trim

import safeTrim from 'safe-trim'
safeTrim('    a      b  ')

let str = '  "a":1    a \r\n\r\t  ᠎             　b       '
let ret = safeTrim(str)
expect(ret).toEqual('"a":1    a\n\nb')

a\r\n\r\nb  => 'a\n\nb'
a\r\rb => 'a\n\nb'
a\r\r\nb => 'a\n\nb'

JSON.parse('{"a":1}') // ❗️Error because BOM

JSON.parse(safeTrim('{"a":1}')) // ✅