/usr/bin/env: ‘node\r’: No such file or directory error Command failed with exit code 127.

[amjedomar]

Bug description

I created a npm package called atco then I used it in project called atco-simple-example

This is atco-simple-example's package.json

{
  "name": "atco-simple-example",
  "scripts": {
    "heroku-postbuild": "atco"
  },
  "devDependencies": {
    "atco": "^1.0.11",
    "typescript": "^3.8.3"
  },
  "private": true
}

Now when I run yarn heroku-postbuild in my local machine (windows platform) it works successfully without any errors.

However when I deployed atco-simple-example,

Heroku returned this error when executed yarn heroku-postbuild

/usr/bin/env: ‘node\r’: No such file or directory
error Command failed with exit code 127.

Here is the full log

-----> Node.js app detected
       
-----> Creating runtime environment
       
       NPM_CONFIG_LOGLEVEL=error
       NODE_ENV=production
       NODE_MODULES_CACHE=true
       NODE_VERBOSE=false
       
-----> Installing binaries
       engines.node (package.json):  12.16.3
       engines.npm (package.json):   unspecified (use default)
       engines.yarn (package.json):  1.22.4
       
       Resolving node version 12.16.3...
       Downloading and installing node 12.16.3...
       Using default npm version: 6.14.4
       Resolving yarn version 1.22.4...
       Downloading and installing yarn (1.22.4)...
       Installed yarn 1.22.4
       
-----> Installing dependencies
       Installing node modules (yarn.lock)
       yarn install v1.22.4
       [1/4] Resolving packages...
       [2/4] Fetching packages...
       info [email protected]: The platform "linux" is incompatible with this module.
       info "[email protected]" is an optional dependency and failed compatibility check. Excluding it from installation.
       [3/4] Linking dependencies...
       [4/4] Building fresh packages...
       Done in 3.53s.
       
-----> Build
       Running heroku-postbuild (yarn)
       yarn run v1.22.4
       $ atco
/usr/bin/env: ‘node\r’: No such file or directory
error Command failed with exit code 127.
       info Visit https://yarnpkg.com/en/docs/cli/run for documentation about this command.
-----> Build failed
       
       We're sorry this build is failing! You can troubleshoot common issues here:
       https://devcenter.heroku.com/articles/troubleshooting-node-deploys
       
       If you're stuck, please submit a ticket so we can help:
       https://help.heroku.com/
       
       Love,
       Heroku
       
 !     Push rejected, failed to compile Node.js app.
 !     Push failed

However the above error doesn't happen when I told Heroku to use npm rather then yarn

-----> Node.js app detected
       
-----> Creating runtime environment
       
       NPM_CONFIG_LOGLEVEL=error
       NODE_ENV=production
       NODE_MODULES_CACHE=true
       NODE_VERBOSE=false
       
-----> Installing binaries
       engines.node (package.json):  12.16.3
       engines.npm (package.json):   6.14.5
       
       Resolving node version 12.16.3...
       Downloading and installing node 12.16.3...
       Bootstrapping npm 6.14.5 (replacing 6.14.4)...
       npm 6.14.5 installed
       
-----> Installing dependencies
       Installing node modules (package.json + package-lock)
       added 90 packages from 144 contributors and audited 179 packages in 4.715s
       
       3 packages are looking for funding
         run `npm fund` for details
       
       found 0 vulnerabilities
       
       
-----> Build
       Running heroku-postbuild
       
       > [email protected] heroku-postbuild /tmp/build_9b98840a15e22a87b9cd7e3c1a002ab1
       > atco
       
       Running...
       
       Done Successfully
       
-----> Caching build
       - node_modules
       
-----> Pruning devDependencies
       removed 40 packages and audited 126 packages in 1.118s
       found 0 vulnerabilities
       
       
-----> Build succeeded!
-----> Discovering process types
       Procfile declares types -> web
-----> Compressing...
       Done: 22.6M
-----> Launching...
       Released v3
       https://atco-simple-example.herokuapp.com/ deployed to Heroku

What is the current behavior?

Throw the following error rather then execute bin file ./src/index.js (in atco package)

/usr/bin/env: ‘node\r’: No such file or directory
error Command failed with exit code 127.

What is the expected behavior?

Execute bin file ./src/index.js (in atco package)

Steps to Reproduce

Deploy atco-simple-example to Heroku (instructions in repository's README)

Environment

• Node Version: 12.16.3
• Yarn v1 Version: 1.22.4
• OS and version: Heroku

[ObserverOfTime]

Convert src/index.js to use Unix line endings (LF) either via your editor or the dos2unix command.

[amjedomar]

Convert src/index.js to use Unix line endings (LF) either via your editor or the dos2unix command.

Yes, your solution solved the problem

Thank you very much @ObserverOfTime