How to solve npm install throwing fsevents warning on non-MAC OS

Question

Following warning is being thrown on npm install command -  npm WARN optional SKIPPING OPTIONAL DEPENDENCY  fsevents 1 1 2  node modules rea ct-scripts node modules fsevents   npm WARN notsup SKIPPING OPTIONAL DEPENDENCY  Unsupported platform for fsevents  1 1 2  wanted   os   darwin   arch   any    current    os   win32   arch   x64     npm WARN optional SKIPPING OPTIONAL DEPENDENCY  fsevents  1 0 0  node modules ch okidar node modules fsevents   npm WARN notsup SKIPPING OPTIONAL DEPENDENCY  Unsupported platform for fsevents  1 1 2  wanted   os   darwin   arch   any    current    os   win32   arch   x64       The warning is apparently causing our Jenkins Job to mark failed  so we are just trying to get rid of the same    I already checked this https   stackoverflow com a 42938398 351903 But  unlike what is mentioned there  I do not have any  node modules fserrors in my setup  Also  my package json does not contain fserrors  Following is my package json -        name    mvc-panel      version    0 1 0      private   true     dependencies          bootstrap     3 3 7        jquery     3 2 1        material-ui     0 18 3        qs     6 4 0        react     15 5 4        react-alert     2 1 2        react-bootstrap-table     3 4 1        react-dom     15 5 4        react-loader     2 4 2        react-router-dom     4 1 1        react-tap-event-plugin     2 0 1        serve     6 0 0          devDependencies          datatables net     1 10 15        jquery     3 2 1        react-scripts     1 0 7          scripts          start    react-scripts start        build    react-scripts build        test    react-scripts test --env jsdom        eject    react-scripts eject          I can see fsevents in the package json of react-scripts  which is defined under devDependencies of my package json  in node modules react-scripts package json -         args                            raw    react-scripts  1 0 7            scope   null           escapedName    react-scripts            name    react-scripts            rawSpec     1 0 7            spec     gt  1 0 7  lt 2 0 0            type    range                  D   Sandeepan  Payu MVC  backend codebase  MVC2 0  panel  mvc-panel                 from    react-scripts  gt  1 0 7  lt 2 0 0       id    react-scripts 1 0 14       inCache   true      location     react-scripts       nodeVersion    8 5 0       npmOperationalInternal          host    s3   npm-registry-packages        tmp    tmp react-scripts-1 0 14 tgz 1506471610836 0 5613740666303784           npmUser          name    timer        email    timer150 gmail com           npmVersion    5 3 0       phantomChildren          asap    2 0 6        escape-string-regexp    1 0 5        graceful-fs    4 1 11        has-ansi    2 0 0        universalify    0 1 1           requested          raw    react-scripts  1 0 7        scope   null       escapedName    react-scripts        name    react-scripts        rawSpec     1 0 7        spec     gt  1 0 7  lt 2 0 0        type    range           requiredBy           DEV             resolved    https   registry npmjs org react-scripts - react-scripts-1 0 14 tgz       shasum    70fe76c9beb67b136b953e875bdfe4ad78d410d1       shrinkwrap   null      spec    react-scripts  1 0 7       where    D   Sandeepan  Payu MVC  backend codebase  MVC2 0  panel  mvc-panel      bin          react-scripts      bin react-scripts js          bugs          url    https   github com facebookincubator create-react-app issues          dependencies          autoprefixer    7 1 2        babel-core    6 25 0        babel-eslint    7 2 3        babel-jest    20 0 3        babel-loader    7 1 1        babel-preset-react-app     3 0 3        babel-runtime    6 26 0        case-sensitive-paths-webpack-plugin    2 1 1        chalk    1 1 3        css-loader    0 28 4        dotenv    4 0 0        eslint    4 4 1        eslint-config-react-app     2 0 1        eslint-loader    1 9 0        eslint-plugin-flowtype    2 35 0        eslint-plugin-import    2 7 0        eslint-plugin-jsx-a11y    5 1 1        eslint-plugin-react    7 1 0        extract-text-webpack-plugin    3 0 0        file-loader    0 11 2        fs-extra    3 0 1        fsevents    1 1 2        html-webpack-plugin    2 29 0        jest    20 0 4        object-assign    4 1 1        postcss-flexbugs-fixes    3 2 0        postcss-loader    2 0 6        promise    8 0 1        react-dev-utils     4 1 0        style-loader    0 18 2        sw-precache-webpack-plugin    0 11 4        url-loader    0 5 9        webpack    3 5 1        webpack-dev-server    2 8 2        webpack-manifest-plugin    1 2 1        whatwg-fetch    2 0 3          description    Configuration and scripts for Create React App       devDependencies          react     15 5 4        react-dom     15 5 4          directories          dist          integrity    sha512- p0q2N2WW7L4WW6uObqN7fYwSQZ9fBI0StpMYl1Ukoz lCbemf yW6b8refyhTsGy62GAqxlpyEfVcTE3hJAxg          shasum    70fe76c9beb67b136b953e875bdfe4ad78d410d1        tarball    https   registry npmjs org react-scripts - react-scripts-1 0 14 tgz          engines          node     gt  6          files          bin        config        scripts        template        utils          homepage    https   github com facebookincubator create-react-app readme      license    MIT      maintainers                  name    timer          email    timer150 gmail com                      name    fb          email    opensource npm fb com                      name    gaearon          email    dan abramov gmail com                name    react-scripts      optionalDependencies          fsevents    1 1 2          readme    ERROR  No README data found       repository          type    git        url    git https   github com facebookincubator create-react-app git          version    1 0 14      Update  I tried running the npm install command and getting the exit status of the earlier command  It showed 0 meaning success  despite the warnings  So  it does not look like Jenkins job should be stuck due to this  However  we are still trying to find a way to get rid of this warning because it is not relevant to our OS

User · Answer

I had got this error  Linux system Ubuntu  and This might happen when you run       npm install   1  If the project is not present in your localdisk computer  copy it to your computer and try again  So you get the permission to access folder  Just make sure you have access permission    2  If you still get some warnings or errors  run      npm audit fix    This will solve vulnerabilities in your dependencies and can help you fix a vulnerability by providing simple-to-run npm commands and recommendations for further troubleshooting   Hope it helps

User · Answer

I m using  Angular CLI  8 1 2  Node  12 14 1  OS  win32 x64  Strangely  this helped me  npm cache clean --force npm uninstall  angular cli npm install  angular cli 8 1 2

User · Answer

Instead of using --no-optional every single time  we can just add it to npm or yarn config  For Yarn  there is a default no-optional config  so we can just edit that  yarn config set ignore-optional true  For npm  there is no default config set  so we can create one  npm config set ignore-optional true

User · Answer

If anyone get this error for ionic cordova install   just use this code npm install --no-optional in your cmd  And then run this code npm install -g ionic latest cordova

User · Answer

npm i -f   I d like to repost some comments from this thread  where you can read up on the issue and the issue was solved      This is exactly Angular s issue  Current package json requires fsevent   as not optionalDependencies but devDependencies  This may be a problem   for non-OSX users    Sometimes     Even if you remove it from package json npm i still fails because   another module has it as a peer dep    So     if npm-shrinkwrap json is still there  please remove it or try npm i   -f

User · Answer

I got the same error  In my case  I was using a mapped drive to edit code off of a second computer  that computer was running linux  Not sure exactly why gulp-watch relies on operating system compatibility prior to install  I would assume it has to do with security purposes   Essentially the error is checking against your operating system and the operating system calling the node module  in my case the two operating systems were not the same so it threw it error  Which from the looks of your error is the same as mine    The Error  Unsupported platform for fsevents 1 1 3  wanted   os   darwin   arch   any    current    os   win32   arch   x64      How I fixed it   I logged into the linux computer directly and ran   npm install --save-dev  lt module-name gt    Then went back into my coding environment and everything was fine after that   Hope that helps

User · Answer

Use sudo npm install -g appium

User · Answer

fsevents is dealt differently in mac and other linux system  Linux system ignores fsevents whereas mac install it  As the above error message states that fsevents is optional and it is skipped in installation process    You can run npm install --no-optional command in linux system to avoid above warning     Further information   https   github com npm npm issues 14185  https   github com npm npm issues 5095

User · Answer

package json counts with a optionalDependencies key  NPM on Optional Dependencies   You can add fsevents to this object and if you find yourself installing packages in a different platform than MacOS  fsevents will be skipped by either yarn or npm    optionalDependencies        fsevents    2 1 2       You will find a message like the following in the installation log   info fsevents 1 2 11  The platform  linux  is incompatible with this module  info  fsevents 1 2 11  is an optional dependency and failed compatibility check  Excluding it from installation  info fsevents 2 1 2  The platform  linux  is incompatible with this module  info  fsevents 2 1 2  is an optional dependency and failed compatibility check  Excluding it from installation    Hope it helps

User · Answer

If you want to hide this warn  you just need to install fsevents as a optional dependency  Just execute   npm i fsevents latest -f --save-optional     And the warn will no longer be a bother

User · Answer

Switch to PNPM  https   pnpm js org  The fsevents warnings are gone  on Linux   Even the latest yarn  2 x  shows the warnings

User · Answer

I found the same problem and i tried all the solution mentioned above and in github  Some works only in local repository  when i push my PR in remote repositories with travic-CI or Pipelines give me the same error back  Finally i fixed it by using the npm command below   npm audit fix --force

User · Answer

Do this   npm install --no-optional   For more info on this go through  https   github com npm npm issues 11632

User · Answer

Yes  it works when with the command npm install --no-optional Using environment    iTerm2 macos login to my vm ubuntu16 LTS

User · Answer

I also had the same issue though am using MacOS  The issue is kind of bug  I solved this issue by repeatedly running the commands    sudo npm cache clean --force  sudo npm uninstall  sudo npm install   One time it did not work but when I repeatedly cleaned the cache and after uninstalling npm  reinstalling npm  the error went off  I am using Angular 8 and this issue is common

[node.js] How to solve npm install throwing fsevents warning on non-MAC OS?

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