Function splitOnce

util/jsonpath-util.js:160–165

(querySpec, token = '=')

}

function splitOnce (querySpec, token = '=') {
  const index = querySpec.indexOf(token)
  const pattern = querySpec.substring(0, index).trim()
  const alias = querySpec.substring(index + 1).trim()
  return { pattern, alias }
}