using selfhost.vm.json as MiniJson

static box Main {
  main(args) {
    local json = "{\"kind\":\"Program\",\"statements\":[{\"kind\":\"Print\",\"expression\":{\"kind\":\"Literal\",\"value\":{\"type\":\"int\",\"value\":42}}}]}"
    local k = "\"value\":"
    local p = json.indexOf(k)
    print(new MiniJson().read_digits_from(json, p + k.length()))
    return 0
  }
}