下面是日志文件
0 info it worked if it ends with ok
1 verbose cli [ 'F:\\Install\\web\\nodejsInstall\\node.exe',
1 verbose cli 'F:\\Install\\web\\nodejsInstall\\node_modules\\npm\\bin\\npm-cli.js',
1 verbose cli 'install',
1 verbose cli 'stylus',
1 verbose cli '--save' ]
2 info using npm@6.4.1
3 info using node@v10.12.0
4 verbose npm-session 8d66494b927eb577
5 silly install loadCurrentTree
6 silly install readLocalPackageData
7 silly fetchPackageMetaData error for stylus@latest request to https://registry.npmjs.org/stylus failed, reason: connect ETIMEDOUT 104.16.26.35:443
8 timing stage:rollbackFailedOptional Completed in 1ms
9 timing stage:runTopLevelLifecycles Completed in 150342ms
10 verbose type system
11 verbose stack FetchError: request to https://registry.npmjs.org/stylus failed, reason: connect ETIMEDOUT 104.16.26.35:443
11 verbose stack at ClientRequest.req.on.err (F:\Install\web\nodejsInstall\node_modules\npm\node_modules\node-fetch-npm\src\index.js:68:14)
11 verbose stack at ClientRequest.emit (events.js:182:13)
11 verbose stack at TLSSocket.socketErrorListener (_http_client.js:391:9)
11 verbose stack at TLSSocket.emit (events.js:182:13)
11 verbose stack at emitErrorNT (internal/streams/destroy.js:82:8)
11 verbose stack at emitErrorAndCloseNT (internal/streams/destroy.js:50:3)
11 verbose stack at process._tickCallback (internal/process/next_tick.js:63:19)
12 verbose cwd F:\Install\CompilerWorkspace\WebStorm\travel\travel\travel
13 verbose Windows_NT 10.0.17134
14 verbose argv "F:\\Install\\web\\nodejsInstall\\node.exe" "F:\\Install\\web\\nodejsInstall\\node_modules\\npm\\bin\\npm-cli.js" "install" "stylus" "--save"
15 verbose node v10.12.0
16 verbose npm v6.4.1
17 error code ETIMEDOUT
18 error errno ETIMEDOUT
19 error network request to https://registry.npmjs.org/stylus failed, reason: connect ETIMEDOUT 104.16.26.35:443
20 error network This is a problem related to network connectivity.
20 error network In most cases you are behind a proxy or have bad network settings.
20 error network
20 error network If you are behind a proxy, please make sure that the
20 error network 'proxy' config is set properly. See: 'npm help config'
21 verbose exit [ 1, true ]解决方法：
使用镜像 ，在 .npmrc 加入下面内容
registry = http://registry.cnpmjs.org
.npmrc 一般在 C 盘的 user 文件夹