Start script missing error when running npm start

Question

I m receiving this error when trying to debug my node application using the npm start command  Error  npm ERR  Windows NT 6 3 9600 npm ERR  argv  quot C   Program Files  nodejs    node exe quot   quot C   Program Files  nodejs  node modules  npm  bin  npm-cli js quot   quot start quot  npm ERR  node v0 12 7 npm ERR  npm  v2 11 3  npm ERR  missing script  start npm ERR  npm ERR  If you need help  you may report this error at  npm ERR       lt https   github com npm npm issues gt npm ERR  Please include the following file with any support request  npm ERR      C  Users andrmoll NORTHAMERICA Documents GitHub SVIChallenge npm-debug log  From the debug file  Error  missing script  start        at run  C  Program Files nodejs node modules npm lib run-script js 142 19         at C  Program Files nodejs node modules npm lib run-script js 58 5        at C  Program Files nodejs node modules npm node modules read-package-json read-json js 345 5        at checkBinReferences   C  Program Files nodejs node modules npm node modules read-package-json read-json js 309 45         at final  C  Program Files nodejs node modules npm node modules read-package-json read-json js 343 3         at then  C  Program Files nodejs node modules npm node modules read-package-json read-json js 113 5         at C  Program Files nodejs node modules npm node modules read-package-json read-json js 300 12        at evalmachine  lt anonymous gt  334 14        at C  Program Files nodejs node modules npm node modules graceful-fs graceful-fs js 102 5        at FSReqWrap oncomplete  evalmachine  lt anonymous gt  95 15

User · Answer

This error also happens if you added a second  script  key in the package json file  If you just leave one  script  key in the package json the error disappears

User · Answer

should avoid using unstable npm version   I observed one thing that is npm version based issue  npm version 4 6 1 is the stable one but 5 x is unstable because package json will be configured perfectly while creating with default template if it s a stable version and so we manually don t need to add that scripts   I got the below issue on the npm 5 so I downgraded to npm 4 6 1 then its worked for me     ERROR  npm 5 is not supported yet    It looks like you re using npm 5 which was recently released   Create React Native App doesn t work with npm 5 yet  unfortunately  We recommend using npm 4 or yarn until some bugs are resolved   You can follow the known issues with npm 5 at  https   github com npm npm issues 16991    Devas-MacBook-Air SampleTestApp deva  npm start npm ERR  missing script  start

User · Answer

If you are using babelify and watchify  go to   package json  and add this in  scripts     scripts          start    watchify the-path-to-your-source-jsx-file -v -t   babelify --presets   react     -o the-path-to-your-output-js-file      An example would be    scripts          start    watchify src main jsx -v -t   babelify --presets   react     -o public js main js      Thanks to Mark Price from DevSlopes

User · Answer

I just stumbled upon this issue  I reinstalled NPM  created a new React app  so basically a clean install  and still no luck  Finally figured it out  My terminal was NOT in the correct location  I had to changedirectory one level deeper into my app  So my terminal was in my  projects  folder instead of my  my-app  folder Path    Documents projects my-app

User · Answer

check package json file having  scripts  property is there or not  if not update script property like this       name    csvjson      version    1 0 0      description    upload csv to json and insert it into MongoDB for a single colletion      scripts          start    node csvjson js          dependencies          csvjson     4 3 4        fs     0 0 1-security        mongodb     2 2 31          devDependencies          repository          type    git        url    git https   github com giturl git          keywords          csv        json        mongodb        nodejs        collection        import        export          author    karthikeyan a      license    ISC      bugs          url    https   github com homepage issues          homepage    https   github com homepage readme

User · Answer

In my case  it wasn t working because I used  scripts  twice  After combining - it is ok    scripts        test    make test      start    node index js

User · Answer

Try with these steps    npm rm -g create-react-app npm install -g create-react-app npx create-react-app my-app  Definitely this works

User · Answer

Take a look at your client package json  You have to have these scripts   scripts        start    react-scripts start      build    react-scripts build      test    react-scripts test --env jsdom      eject    react-scripts eject

User · Answer

I have solved mine   Its not an NPM Error its related to proxy behavior   If you are behind proxy   MAC  1   Goto System Preference  gears icon on your mac   2   click your network  3   click advanced  4   click proxy  5   check excludes simple hostnames  6   add this line below  Bypass Proxy Settings      localhost  localhost 8080   refer to the npm echo   Project is running at http   localhost 8080    Windows  1   Goto your browser Proxy Settings  google it   2   check Bypass local address  3   add this line below  localhost  localhost 8080

User · Answer

Please use the below line of code in script object which is there in package json   scripts          start    webpack-dev-server --hot      For me it worked perfectly fine

User · Answer

It looks like you might not have defined a start script in your package json file or your project does not contain a server js file      If there is a server js file in the root of your package  then npm will default the start command to node server js    https   docs npmjs com misc scripts default-values  You could either change the name of your application script to server js or add the following to your package json   scripts          start    node your-script js      Or     you could just run node your-script js directly

User · Answer

In my case  if it s a react project  you can try to upgrade npm  and then upgrade react-cli  npm -g install npm version npm install -g create-react-app

User · Answer

Another possible reason  you re using npm when your project is initialized in yarn   I did this myself   So it would be yarn start instead of npm start

User · Answer

Make sure the PORTS ARE ON   var app   express    app set  port    process env PORT    5000      BLAL BLA BLA AND AT THE END YOU HAVE THIS  app listen app get  port    function         console log  Node app is running at localhost     app get  port          Still a newbee in node js but this caused more of this

User · Answer

As per the react documentation https   create-react-app dev docs getting-started  The following commands will resolve the issue  npx create-react-app my-app cd my-app npm start

User · Answer

Installing create-react-app globally is now discouraged  Instead uninstall globally installed create-react-app package by doing  npm uninstall -g create-react-app  you may have to manually delete package folder if this command didn t work for you  Some users have reported they had to delete folders manually   Then you can run npx create-react-app my-app to create react app again   ref  https   github com facebook create-react-app issues 8086

User · Answer

scripts        prestart    npm install      start    http-server -a localhost -p 8000 -c-1      add this code snippet in your package json  depending on your own configuration

User · Answer

I got this error because I wasn t in the right directory in terminal  App with the scripts was in folder B  Folder B was in folder A  I open folder A in vscode and enter  quot npm run start quot  into the built in terminal and got the error  try  quot cd folder B quot   opening folder B in the ide  or organizing your stuff better than I did in the first place

User · Answer

I am getting this error with a ruby on rails app  I don t know what script name to put in my package json file  I tried   quot scripts quot            quot start quot    quot webpack-dev-server --hot quot       But I got this error  remote  App container failed to start         gt  taaalk web container output          gt  taaalk edge 0 1 0 start         gt  webpack-dev-server --hot         usr lib ruby 2 5 0 rubygems core ext kernel require rb 59 in  require   cannot load such file -- bundler setup  LoadError          from  usr lib ruby 2 5 0 rubygems core ext kernel require rb 59 in  require          from  app bin webpack-dev-server 10 in   lt main gt          npm ERR  code 1        npm ERR  path  app        npm ERR  command failed        npm ERR  command sh -c webpack-dev-server --hot        npm ERR  A complete log of this run can be found in         npm ERR       app  npm  logs 2020-11-27T01 01 54 386Z-debug log         gt  taaalk edge 0 1 0 start         gt  webpack-dev-server --hot         usr lib ruby 2 5 0 rubygems core ext kernel require rb 59 in  require   cannot load such file -- bundler setup  LoadError          from  usr lib ruby 2 5 0 rubygems core ext kernel require rb 59 in  require          from  app bin webpack-dev-server 10 in   lt main gt          npm ERR  code 1        npm ERR  path  app        npm ERR  command failed        npm ERR  command sh -c webpack-dev-server --hot        npm ERR  A complete log of this run can be found in         npm ERR       app  npm  logs 2020-11-27T01 01 55 590Z-debug log         gt  taaalk edge 0 1 0 start         gt  webpack-dev-server --hot         usr lib ruby 2 5 0 rubygems core ext kernel require rb 59 in  require   cannot load such file -- bundler setup  LoadError          from  usr lib ruby 2 5 0 rubygems core ext kernel require rb 59 in  require          from  app bin webpack-dev-server 10 in   lt main gt          npm ERR  code 1        npm ERR  path  app        npm ERR  command failed        npm ERR  command sh -c webpack-dev-server --hot        npm ERR  A complete log of this run can be found in         npm ERR       app  npm  logs 2020-11-27T01 01 56 835Z-debug log         gt  taaalk edge 0 1 0 start         gt  webpack-dev-server --hot         usr lib ruby 2 5 0 rubygems core ext kernel require rb 59 in  require   cannot load such file -- bundler setup  LoadError          from  usr lib ruby 2 5 0 rubygems core ext kernel require rb 59 in  require          from  app bin webpack-dev-server 10 in   lt main gt          npm ERR  code 1        npm ERR  path  app        npm ERR  command failed        npm ERR  command sh -c webpack-dev-server --hot        npm ERR  A complete log of this run can be found in         npm ERR       app  npm  logs 2020-11-27T01 01 58 249Z-debug log         gt  taaalk edge 0 1 0 start         gt  webpack-dev-server --hot         usr lib ruby 2 5 0 rubygems core ext kernel require rb 59 in  require   cannot load such file -- bundler setup  LoadError          from  usr lib ruby 2 5 0 rubygems core ext kernel require rb 59 in  require          from  app bin webpack-dev-server 10 in   lt main gt          npm ERR  code 1        npm ERR  path  app        npm ERR  command failed        npm ERR  command sh -c webpack-dev-server --hot        npm ERR  A complete log of this run can be found in         npm ERR       app  npm  logs 2020-11-27T01 02 00 063Z-debug log         gt  taaalk edge 0 1 0 start         gt  webpack-dev-server --hot         usr lib ruby 2 5 0 rubygems core ext kernel require rb 59 in  require   cannot load such file -- bundler setup  LoadError          from  usr lib ruby 2 5 0 rubygems core ext kernel require rb 59 in  require          from  app bin webpack-dev-server 10 in   lt main gt          npm ERR  code 1        npm ERR  path  app        npm ERR  command failed        npm ERR  command sh -c webpack-dev-server --hot        npm ERR  A complete log of this run can be found in         npm ERR       app  npm  logs 2020-11-27T01 02 02 705Z-debug log       gt  end taaalk web container output To taaalk co taaalk     remote rejected  master - gt  master  pre-receive hook declined  error  failed to push some refs to  dokku taaalk co taaalk   I am not very familiar with these sorts of problems so am a bit lost

User · Answer

I had this issue while installing react-js for the first time   These line helped me solve the issue   npm rm -g create-react-app npm install -g create-react-app npx create-react-app my-app   source  https   stackoverflow com a 59260128 11652661

User · Answer

You might have an old  global  installation of npm which causes the issue  As of 12 19  npm does not support global installations   First  uninstall the package using   npm uninstall -g create-react-app  Some osx Linux users may need to also remove the old npm using   rm -rf  usr local bin create-react-app  This is now the only supported method for generating a project   npx create-react-app my-app  Finally you can run   npm start

User · Answer

I have the same issue  I try to write a code in package json file as below       scripts          start     lt your-script-file gt  js        test    echo   Error  no test specified    amp  amp  exit 1

[javascript] Start script missing error when running npm start

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