Is it necessary to update react15.1 to react16.4,router?

background:
I want to experience the features of the new version of react these days, so I want to update the react of the project to version 16.
problem
react is updated to 16.4, React.PropTypes is discarded, and after the project is run, it is found that only react-router, in node_modules uses React.PropTypes to manually change React.PropTypes to

in the react-router folder.
import PropTypes from "react-types"

PropTypes ? Or to upgrade react-router to 4.X, I tried to upgrade react-router2.X to react-router4.X, yesterday, but my ability was limited, and I haven"t done it for a day and a half, so let"s ask you how to get it done.

Jun.07,2021
MySQL Query : SELECT * FROM `codeshelper`.`v9_news` WHERE status=99 AND catid='6' ORDER BY rand() LIMIT 5
MySQL Error : Disk full (/tmp/#sql-temptable-64f5-1bea5ab-319cd.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1bea5ab-319cd.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
Need Help?