configure the chrome debugger react

1{
2  "version": "0.2.0",
3  "configurations": [
4    {
5      "type": "chrome",
6      "request": "launch",
7      "name": "Launch Chrome against localhost",
8      "url": "http://localhost:3000",
9      "webRoot": "${workspaceFolder}"
10    }
11  ]
12}