正在安装react路由器，但不更新包。json文件

Question

安装react router dom，向许多人显示警告消息后，它不会更新包。json文件<代码>包。side dependencies对象块dos中的json文件不显示reac路由器dom版本信息。

反应路由器：

npm i react-router-dom
npm WARN saveError ENOENT: no such file or directory, open 'D:\Linux\IDE\All-Workspace\JavaScript-Workspace\package.json'
npm WARN enoent ENOENT: no such file or directory, open 'D:\Linux\IDE\All-Workspace\JavaScript-Workspace\package.json'
npm WARN @webpack-contrib/config-loader@1.2.1 requires a peer of webpack@^4.3.0 but none is installed. You must install peer dependencies yourself.
npm WARN @webpack-contrib/schema-utils@1.0.0-beta.0 requires a peer of webpack@^3.0.0 || ^4.0.0 but none is installed. You must install peer dependencies yourself.
npm WARN react-router@4.3.1 requires a peer of react@>=15 but none is installed. You must install peer dependencies yourself.
tpm WARN uglifyjs-webpack-plugin@1.3.0 requires a peer of webpack@^2.0.0 || ^3.0.0 || ^4.0.0 but none is installed. You must install peer depealled. You must install peer dependencies yourself.
npm WARN uglifyjs-webpack-plugin@1.3.0 requires a peer of webpack@^2.0.0 installed. You must install peer dependencies yourself.
|pm WARN webpack-command@0.4.1 requires a peer of webpack@^4.4.0 but none is installed. You must install peer dependencies yourself.| ^3.0.0 || ^4.0.0 but none is installed. You must install peer dependenc installed. You must install peer dependencies yourself.
ipm WARN JavaScript-Workspace No description
es yourself.
npm WARN webpack-cli@3.1.0 requires a peer of webpack@^4.x.x but none is
ipm WARN JavaScript-Workspace No license field.
nstalled. You must install peer dependencies yourself.                   les\fsevents):
npm WARN webpack-command@0.4.1 requires a peer of webpack@^4.4.0 but noneevents@1.2.4: wanted {"os":"darwin","arch":"any"} (current: {"os":"wiis installed. You must install peer dependencies yourself.
npm WARN react-router-dom@4.3.1 requires a peer of react@>=15 but none isnpm WARN webpack-command@0.4.1 requires a peer of webpack@^4.4.0 but none
 is installed. You must install pe
er dependencies yourself.
npm WARN react-router-dom@4.3.1 requires a peer of react@>=15 but none is
 installed. You must install peer
dependencies yourself.
npm WARN webpack-command@0.4.1 requires a peer of webpack@^4.4.0 but none dep: is installed. You must install peer dependencies yourself.
npm WARN react-router-dom@4.3.1 requires a peer of react@>=15 but none is installed. You must install peer dependencies yourself.
npm WARN JavaScript-Workspace No descriptionnpm WARN JavaScript-Workspace No repository field.
npm WARN JavaScript-Workspace No README data
npm WARN JavaScript-Workspace No license field.
npm WARN optional SKIPPING OPTIONAL DEPENDENCY: fsevents@1.2.4 (node_modules\fsevents):
npm WARN notsup SKIPPING OPTIONAL DEPENDENCY: Unsupported platform for fsevents@1.2.4: wanted {"os":"darwin","arch":"any"} (current: {"os":"win32","arch":"x64"})
+ react-router-dom@4.3.1updated 1 package and audited 11195 packages in 13.378sfound 0 vulnerabilities

Package.json

{
  "name": "lyricfinder_react",
  "version": "0.1.0",
  "private": true,
  "dependencies": {
    "react": "^16.4.2",
    "react-dom": "^16.4.2",
    "react-scripts": "1.1.5"
  },
  "scripts": {
    "start": "react-scripts start",
    "build": "react-scripts build",
    "test": "react-scripts test --env=jsdom",
    "eject": "react-scripts eject"
  }
}

Answer 1

您需要将--sa或-S作为npm安装的选项，如下所示：npm安装-S react-router-dom。然后你告诉npm将其添加到package.json.或者如果你想将其保存为开发依赖项，你可以添加一个-D

编辑

根据这个答案：https://stackoverflow.com/a/44441625/5997891，以及下面的注释，从npm版本5中，npm安装命令默认保存包。