npm audit fix를 하라고 해서 하긴 했는데~
$ npm i -D @types/react-router @types/react-router-dom npm WARN sleact@1.0.0 No description npm WARN sleact@1.0.0 No repository field. npm WARN optional SKIPPING OPTIONAL DEPENDENCY: fsevents@1.2.13 (node_modules\we bpack-dev-server\node_modules\fsevents): npm WARN notsup SKIPPING OPTIONAL DEPENDENCY: Unsupported platform for fsevents@ 1.2.13: wanted {"os":"darwin","arch":"any"} (current: {"os":"win32","arch":"x64" }) npm WARN optional SKIPPING OPTIONAL DEPENDENCY: fsevents@2.3.2 (node_modules\fse vents): npm WARN notsup SKIPPING OPTIONAL DEPENDENCY: Unsupported platform for fsevents@ 2.3.2: wanted {"os":"darwin","arch":"any"} (current: {"os":"win32","arch":"x64"} ) + @types/react-router@5.1.18 + @types/react-router-dom@5.3.3 updated 2 packages and audited 838 packages in 6.837s 63 packages are looking for funding run `npm fund` for details found 8 vulnerabilities (2 low, 5 moderate, 1 high) run `npm audit fix` to fix them, or `npm audit` for details