What is the --save option for npm install

Question

I saw some tutorial where the command was   npm install --save   What does the --save option mean   Not able to find the answer on Google

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npm v6 x update     now you can be using one of npm i or npm i -S or npm i -P to install and save module as a dependency    npm i is the alias of npm install  npm i is equal to npm install  means default save module as a dependency  npm i -S is equal to npm install --save  npm v5-  npm i -P is equal to npm install --save-prod  npm v5    check your npm version   npm -v 6 14 4  get npm help      npm -h  Usage  npm  lt command gt   where  lt command gt  is one of      access  adduser  audit  bin  bugs  c  cache  ci  cit      clean-install  clean-install-test  completion  config      create  ddp  dedupe  deprecate  dist-tag  docs  doctor      edit  explore  fund  get  help  help-search  hook  i  init      install  install-ci-test  install-test  it  link  list  ln      login  logout  ls  org  outdated  owner  pack  ping  prefix      profile  prune  publish  rb  rebuild  repo  restart  root      run  run-script  s  se  search  set  shrinkwrap  star      stars  start  stop  t  team  test  token  tst  un      uninstall  unpublish  unstar  up  update  v  version  view      whoami  npm  lt command gt  -h  quick help on  lt command gt  npm -l            display full usage info npm help  lt term gt    search for help on  lt term gt  npm help npm      involved overview  Specify configs in the ini-formatted file       Users xgqfrms-mbp  npmrc or on the command line via  npm  lt command gt  --key value Config info can be viewed via  npm help config  npm 6 14 4  Users xgqfrms-mbp  nvm versions node v12 18 0 lib node modules npm  get npm install help  npm -h i   npm help install    npm -h i    npm install  with no args  in package dir  npm install   lt  scope gt    lt pkg gt  npm install   lt  scope gt    lt pkg gt   lt tag gt  npm install   lt  scope gt    lt pkg gt   lt version gt  npm install   lt  scope gt    lt pkg gt   lt version range gt  npm install  lt alias gt  npm  lt name gt  npm install  lt folder gt  npm install  lt tarball file gt  npm install  lt tarball url gt  npm install  lt git    url gt  npm install  lt github username gt   lt github project gt   aliases  i  isntall  add common options   --save-prod --save-dev --save-optional   --save-exact   --no-save          refs https   docs npmjs com cli install

User · Answer

npm install --save or -S  When the following command is used with npm install this will save all your installed core packages into the dependency section in the package json file  Core dependencies are those packages without which your application will not give the desired results  But as mentioned earlier  it is an unnecessary feature in the npm 5 0 0 version onwards  npm install --save

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according to NPM Doc    So it seems that by running npm install package name  the package dependency should be automatically added to package json right

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The easier  and more awesome  way to add dependencies to your package json is to do so from the command line  flagging the npm install command with either --save or --save-dev  depending on how you d like to use that dependency

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You can also use -S  -D or -P which are equivalent of saving the package to an app dependency  a dev dependency or prod dependency  See more NPM shortcuts below   -v  --version -h  -   --help  -H  --usage -s  --silent  --loglevel silent -q  --quiet  --loglevel warn -d  --loglevel info -dd  --verbose  --loglevel verbose -ddd  --loglevel silly -g  --global -C  --prefix -l  --long -m  --message -p  --porcelain  --parseable -reg  --registry -f  --force -desc  --description -S  --save -P  --save-prod -D  --save-dev -O  --save-optional -B  --save-bundle -E  --save-exact -y  --yes -n  --yes false ll and la commands  ls --long   This list of shortcuts can be obtained by running the following command     npm help 7 config

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Update npm 5   As of npm 5 0 0  installed modules are added as a dependency by default  so the --save option is no longer needed  The other save options still exist and are listed in the documentation for npm install   Original answer   Before version 5  NPM simply installed a package under node modules by default  When you were trying to install dependencies for your app module  you would need to first install them  and then add them  along with the appropriate version number  to the dependencies section of your package json   The --save option instructed NPM to include the package inside of the dependencies section of your package json automatically  thus saving you an additional step   In addition  there are the complementary options --save-dev and --save-optional which save the package under devDependencies and optionalDependencies  respectively  This is useful when installing development-only packages  like grunt or your testing library

User · Answer

Update as of npm 5  As of npm 5 0 0  installed modules are added as a dependency by default  so the --save option is no longer needed  The other save options still exist and are listed in the documentation for npm install   Original answer  It won t do anything if you don t have a package json file   Start by running npm init to create one   Then calls to npm install --save or npm install --save-dev or npm install --save-optional will update the package json to list your dependencies

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Update as of npm 5  As of npm 5 0 0  installed modules are added as a dependency by default  so the --save option is no longer needed  The other save options still exist and are listed in the documentation for npm install   Original Answer  To add package in dependencies  npm install my dep --save  or npm install my dep -S  or npm i my dep -S  To add package in devDependencies npm install my test framework --save-dev  or npm install my test framework -D  or npm i my test framework -D  package json

User · Answer

npm install --save or npm install --save-dev why we choose 1 options between this two while installing package in our project    things is clear from the above answers that npm install --save will add entry in the dependency field in pacakage json file and other one in dev-dependency   So question arises why we need entry of our installing module in pacakge json file because whenever we check-in code in git or giving our code to some one we always give it or check it without node-modules because it is very large in size and also available at common place so to avoid this we do that   so then how other person will get all the modules that is specifically or needed for that project so answers is from the package json file that have the entry of all the required packages for running or developing that project   so after getting the code we simply need to run the npm install command it will read the package json file and install the necessary required packages

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npm install package x --save  The given package  package x  will be saved in package json inside dependencies  if you add   npm install  lt  lt package x gt  gt  --save-dev  then it will be saved inside devDependencies

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As of npm 5  it is more favorable to use --save-prod  or -P  than --save but doing the same thing  as is stated in npm install  So far  --save still works if provided

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npm i  Package name  --save   Simplily  using above command we ll not need to write package name in your package json file it ll auto add its name and dependency with version that you ll need at time when you go for production or setup another time   npm help install   Above command ll help find out more option and correct def shown in pic

User · Answer

As of npm 5  npm  will now save by default  In case if you would like npm to work in a similar old fashion  no autosave  to how it was working in previous versions  you can update the config option to enable autosave as below   npm config set save false   To get the current setting  you can execute the following command   npm config get save   Source https   blog pusher com what-you-need-know-npm-5

[node.js] What is the --save option for npm install?

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