parseQueryString
Parse a query string into an object of key-value pairs.
string(required): query string (with or without leading?)
bash
echo '{"qs": "name=Alice&age=30&city=Amsterdam"}' | utlx -e 'parseQueryString($input.qs)'
# {"name": "Alice", "age": "30", "city": "Amsterdam"}utlx
let params = parseQueryString($input.queryString)
{
userName: params.name
}