Yarn install fail

[ech01]

After installing yarn (via downloadable msi from the yarn site) and running the install command, an error occurs. Here is the output.

C:\devsites\Dnn.Evoq.LiquidContent.Samples.Public\APIExplorer> yarn install
yarn : The term 'yarn' is not recognized as the name of a cmdlet, function, script file, or
operable program. Check the spelling of the name, or if a path was included, verify that the
path is correct and try again.
At line:1 char:1

• yarn install

•   + CategoryInfo          : ObjectNotFound: (yarn:String) [], CommandNotFoundException
    + FullyQualifiedErrorId : CommandNotFoundException
  
  

Is there more to the yarn installation process?

[ech01]

Exiting powershell and retrying the command works.

However, yarn install fails at

[2/4] Fetching packages...
error An unexpected error occurred: "https://registry.yarnpkg.com/npm/tslint/-/tslint-4.4.2.tgz: Request failed "404 Not Found"".
info If you think this is a bug, please open a bug report with the information provided in "C:\devsites\Dnn.Evoq.LiquidContent.Samples.Public\APIExplorer\yarn-error.log".
info Visit https://yarnpkg.com/en/docs/cli/install for documentation about this command.

[wmorgenweck]

Try running "npm install" instead. That worked for me.

[ech01]

@wmorgenweck Good workaround. Thanks!

[richard-edwards]

yarn install still isn't working with this repo. npm install does but the docs should be fixed or yarn fixed

[jayaramsurya]

Windows PowerShell
Copyright (C) 2013 Microsoft Corporation. All rights reserved.

PS C:\Users> choco install yarn
Chocolatey v0.10.11
Chocolatey detected you are not running from an elevated command shell
(cmd/powershell).

You may experience errors - many functions/packages
require admin rights. Only advanced users should run choco w/out an
elevated shell. When you open the command shell, you should ensure
that you do so with "Run as Administrator" selected. If you are
attempting to use Chocolatey in a non-administrator setting, you
must select a different location other than the default install
location. See
https://chocolatey.org/install#non-administrative-install for details.

Do you want to continue?([Y]es/[N]o): yes

Installing the following packages:
yarn
By installing you accept licenses for the packages.
yarn not installed. An error occurred during installation:
Access to the path 'C:\ProgramData\chocolatey\lib\yarn\tools' is denied.
yarn package files install completed. Performing other installation steps.
The install of yarn was NOT successful.
yarn not installed. An error occurred during installation:
Access to the path 'C:\ProgramData\chocolatey\lib\yarn\tools' is denied.

Chocolatey installed 0/1 packages. 1 packages failed.
See the log for details (C:\ProgramData\chocolatey\logs\chocolatey.log).

Failures

• yarn (exited 1) - yarn not installed. An error occurred during installation:
  Access to the path 'C:\ProgramData\chocolatey\lib\yarn\tools' is denied.
  PS C:\Users>
  PS C:\Users> yarn -version
  yarn : The term 'yarn' is not recognized as the name of a cmdlet, function, script file, or operable program. Check
  the spelling of the name, or if a path was included, verify that the path is correct and try again.
  At line:1 char:1

• yarn -version

•   + CategoryInfo          : ObjectNotFound: (yarn:String) [], CommandNotFoundException
    + FullyQualifiedErrorId : CommandNotFoundException
  
  
  

PS C:> yarn -version
yarn : The term 'yarn' is not recognized as the name of a cmdlet, function, script file, or operable program. Check
the spelling of the name, or if a path was included, verify that the path is correct and try again.
At line:1 char:1

• yarn -version

•   + CategoryInfo          : ObjectNotFound: (yarn:String) [], CommandNotFoundException
    + FullyQualifiedErrorId : CommandNotFoundException
  
  

PS C:> npm install yarn
npm WARN saveError ENOENT: no such file or directory, open 'C:\package.json'
npm WARN saveError EPERM: operation not permitted, open 'C:\package-lock.json.221618176'
npm WARN enoent ENOENT: no such file or directory, open 'C:\package.json'
npm WARN !invalid#1 No description
npm WARN !invalid#1 No repository field.
npm WARN !invalid#1 No README data
npm WARN !invalid#1 No license field.

• [email protected]
  added 1 package and audited 1 package in 4.658s
  found 0 vulnerabilities

[md-quneifdi]

problem solving steps :
1 - run the powerSell as an administrator
2 - open the folder that you want to run Yarn on it in the terminal :

• Example : C:\Users\dell\Desktop\yarntest
  3 - type the following command :
  Set-ExecutionPolicy RemoteSigned
  4 - try to run Yarn again : yarn -v
  Now Everything is working..
  5 - to turn to the defaul just run the following command :
  Set-ExecutionPolicy Restricted
  you can watch this video to more understand :
  https://youtu.be/lq2QBZsyF9A