command line - npm install multiple package names

Question

What does it do when I run this command:

npm install --save-dev package1 package2

It is definitely not installing multiple packages, but it looks to be essential. (For example https://www.browsersync.io/docs/gulp)

For me it throws following ERRs:

C:1HLAVNILukasWebdesignlukasradek>npm install --save-dev gulp-babel gulp-add-src

> [email protected] install C:1HLAVNILukasWebdesignlukasradek
ode_modulesufferutil
> node-gyp rebuild


C:1HLAVNILukasWebdesignlukasradek
ode_modulesufferutil>if not defined npm_config_node_gyp (node "C:Program Files
odejs
ode_modules
pmin
ode-gyp-bin\....
ode_modules
ode-gypin
ode-gyp.js" rebuild )  else (node "" rebuild )
gyp ERR! configure error
gyp ERR! stack Error: Can't find Python executable "python", you can set the PYTHON env variable.
gyp ERR! stack     at failNoPython (C:Program Files
odejs
ode_modules
pm
ode_modules
ode-gyplibconfigure.js:401:14)
gyp ERR! stack     at C:Program Files
odejs
ode_modules
pm
ode_modules
ode-gyplibconfigure.js:356:11
gyp ERR! stack     at FSReqWrap.oncomplete (fs.js:123:15)
gyp ERR! System Windows_NT 10.0.10586
gyp ERR! command "C:\Program Files\nodejs\node.exe" "C:\Program Files\nodejs\node_modules\npm\node_modules\node-gyp\bin\node-gyp.js" "rebuild"
gyp ERR! cwd C:1HLAVNILukasWebdesignlukasradek
ode_modulesufferutil
gyp ERR! node -v v6.3.1
gyp ERR! node-gyp -v v3.3.1
gyp ERR! not ok
npm WARN install:[email protected] [email protected] install: `node-gyp rebuild`
npm WARN install:[email protected] Exit status 1

> [email protected] install C:1HLAVNILukasWebdesignlukasradek
ode_modulesutf-8-validate
> node-gyp rebuild


C:1HLAVNILukasWebdesignlukasradek
ode_modulesutf-8-validate>if not defined npm_config_node_gyp (node "C:Program Files
odejs
ode_modules
pmin
ode-gyp-bin\....
ode_modules
ode-gypin
ode-gyp.js" rebuild )  else (node "" rebuild )
gyp ERR! configure error
gyp ERR! stack Error: Can't find Python executable "python", you can set the PYTHON env variable.
gyp ERR! stack     at failNoPython (C:Program Files
odejs
ode_modules
pm
ode_modules
ode-gyplibconfigure.js:401:14)
gyp ERR! stack     at C:Program Files
odejs
ode_modules
pm
ode_modules
ode-gyplibconfigure.js:356:11
gyp ERR! stack     at FSReqWrap.oncomplete (fs.js:123:15)
gyp ERR! System Windows_NT 10.0.10586
gyp ERR! command "C:\Program Files\nodejs\node.exe" "C:\Program Files\nodejs\node_modules\npm\node_modules\node-gyp\bin\node-gyp.js" "rebuild"
gyp ERR! cwd C:1HLAVNILukasWebdesignlukasradek
ode_modulesutf-8-validate
gyp ERR! node -v v6.3.1
gyp ERR! node-gyp -v v3.3.1
gyp ERR! not ok
npm WARN install:[email protected] [email protected] install: `node-gyp rebuild`
npm WARN install:[email protected] Exit status 1
[email protected] C:1HLAVNILukasWebdesignlukasradek
+-- [email protected]
| +-- [email protected]
| | `-- [email protected]
| +-- [email protected]
| | `-- [email protected]
| `-- [email protected]
|   +-- [email protected]
|   `-- [email protected]
|     `-- [email protected]
`-- [email protected]
  +-- [email protected]
  | +-- [email protected]
  | | `-- [email protected]
  | +-- [email protected]
  | | +-- [email protected]
  | | | `-- [email protected]
  | | `-- [email protected]
  | +-- [email protected]
  | +-- [email protected]
  | +-- [email protected]
  | | +-- [email protected]
  | | +-- [email protected]
  | | +-- [email protected]
  | | +-- [email protected]
  | | `-- [email protected]
  | |   `-- [email protected]
  | +-- [email protected]
  | | `-- [email protected]
  | +-- [email protected]
  | | `-- [email protected]
  | +-- [email protected]
  | | +-- [email protected]
  | | +-- [email protected]
  | | | `-- [email protected]
  | | |   `-- [email protected]
  | | `-- [email protected]
  | +-- [email protected]
  | | +-- [email protected]
  | | `-- [email protected]
  | +-- [email protected]
  | +-- [email protected]
  | +-- [email protected]
  | +-- [email protected]
  | +-- [email protected]
  | +-- [email protected]
  | +-- [email protected]
  | `-- [email protected]
  `-- [email protected]

npm WARN optional Skipping failed optional dependency /chokidar/fsevents:
npm WARN notsup Not compatible with your operating system or architecture: [email protected]
npm WARN [email protected] No repository field.

question from:https://stackoverflow.com/questions/38817571/npm-install-multiple-package-names

Answer 1

It is definitely not installing multiple packages

Why? You're installing package1 and package2 and marking them as devDependencies with --save-dev.

As stated in the documentation, you may combine multiple arguments, and even multiple types of arguments. In your case, you're combining 2 package names published on the registry.