vue init webpack error · [README.md] Missing helper: "if_or"

[memoryleakyu]

vue init webpack my-project

? Project name ***
? Project description ***
? Author ***
? Vue build standalone
? Install vue-router? No
? Use ESLint to lint your code? No
? Setup unit tests with Karma + Mocha? No
? Setup e2e tests with Nightwatch? No
vue-cli · [README.md] Missing helper: "if_or"

I tried several times and the error seems to be randomly reported. like this
vue-cli · [package.json] Missing helper: "if_or"

my node version is 8.5.0

a lot appreciate if you could solve this problem

[posva]

Could you give more information about your OS? I'm unable to reproduce it on OS X

[memoryleakyu]

Sorry I forgot to mention it. I'm using it on windows 10 . I also tired it with node v8.9.0. It reported the same error vue-cli · [package.json] Missing helper: "if_or".
I have used vue-cli 2.8.2 before successfully with the same computer and os. Dont know what happened when I updated the vue-cli to 2.9.1

[cocoastorm]

Hey, are you using yarn or npm?
I encountered a similar issue but it was complaining about Missing helper: "if_eq" ...

[1MoreBuild]

I got the exactly same error on my OS X.

[memoryleakyu]

my problem was solved. try not to name the project.
just use vue init webpack then everything goes well. don't know what's the trick behind it

[LinusBorg]

OPs problem was solved, reproductions where not provided, issue has been inactive for 7 days.

=> Closing.

[adrienthiery]

Hey there @LinusBorg ,

Got that error today on MacOSX 10.12.6.

Installing vue-cli with yarn globally threw that error.

$ yarn global add vue-cli                                 ✓  22:09
yarn global v1.3.2
[1/4] 🔍  Resolving packages...
warning vue-cli > coffee-script@1.12.7: CoffeeScript on NPM has moved to "coffeescript" (no hyphen)
warning vue-cli > metalsmith > gray-matter > coffee-script@1.12.7: CoffeeScript on NPM has moved to "coffeescript" (no hyphen)
[2/4] 🚚  Fetching packages...
[3/4] 🔗  Linking dependencies...
[4/4] 📃  Building fresh packages...
success Installed "vue-cli@2.9.2" with binaries:
      - vue
      - vue-init
      - vue-list
✨  Done in 10.69s.

$ vue-init webpack news                                   ✓  22:10

? Project name news
? Project description Show dogshed events
? Author Adrien Thiery
? Vue build standalone
? Install vue-router? No
? Use ESLint to lint your code? Yes
? Pick an ESLint preset Airbnb
? Set up unit tests No
? Setup e2e tests with Nightwatch? No
   vue-cli · [.babelrc] Missing helper: 'if_or'

$ yarn global remove vue-cli                            1 ↵  22:16
yarn global v1.3.2
[1/2] Removing module vue-cli...
[2/2] Regenerating lockfile and installing missing dependencies...
success Uninstalled packages.
✨  Done in 16.09s.

$ npm i -g vue-cli                                        ✓  22:16
npm WARN deprecated coffee-script@1.12.7: CoffeeScript on NPM has moved to "coffeescript" (no hyphen)
/Users/osedea/.nvm/versions/node/v8.9.0/bin/vue -> /Users/osedea/.nvm/versions/node/v8.9.0/lib/node_modules/vue-cli/bin/vue
/Users/osedea/.nvm/versions/node/v8.9.0/bin/vue-init -> /Users/osedea/.nvm/versions/node/v8.9.0/lib/node_modules/vue-cli/bin/vue-init
/Users/osedea/.nvm/versions/node/v8.9.0/bin/vue-list -> /Users/osedea/.nvm/versions/node/v8.9.0/lib/node_modules/vue-cli/bin/vue-list
+ vue-cli@2.9.2
added 264 packages in 12.443s

$ vue init webpack news                                   ✓  22:17

? Project name news
? Project description Show dogshed events
? Author Adrien Thiery
? Vue build standalone
? Install vue-router? No
? Use ESLint to lint your code? Yes
? Pick an ESLint preset Airbnb
? Set up unit tests No
? Setup e2e tests with Nightwatch? No

   vue-cli · Generated "news".

   To get started:

     cd news
     npm install
     npm run dev

   Documentation can be found at https://vuejs-templates.github.io/webpack

Uninstalling it and reinstalling it with npm i -g vue-cli solved the problem.

Hopefully it helps.

P.S. Hi @posva ;)

[drazisil]

@adrienthiery Do you have any idea why that is? Seems like a strange edge case.

I assume it's related to https://github.com/vuejs-templates/webpack/blob/develop/template/.babelrc#L11 but the only reference I can find to if_or is that only if_eq is registered here https://github.com/vuejs/vue-cli/blob/master/lib/generate.js#L14

That said, I'm at a loss as to why npm install works and yarn doesn't.

[Drudwyn]

Reproduced this bug, on Windows 10, installing using npm.

npm uninstall -g vue-cli
removed 264 packages in 3.876s

C:\Users\my.user\Documents\js>npm i -g vue-cli
npm WARN deprecated coffee-script@1.12.7: CoffeeScript on NPM has moved to "coffeescript" (no hyphen)
C:\Users\my.user\AppData\Roaming\npm\vue-list -> C:\Users\my.user\AppData\Roaming\npm\node_modules\vue-cli\bin\vue-list
C:\Users\my.user\AppData\Roaming\npm\vue -> C:\Users\my.user\AppData\Roaming\npm\node_modules\vue-cli\bin\vue
C:\Users\my.user\AppData\Roaming\npm\vue-init -> C:\Users\my.user\AppData\Roaming\npm\node_modules\vue-cli\bin\vue-init
+ vue-cli@2.9.2
added 264 packages in 17.433s

C:\Users\my.user\Documents\js> vue init webpack --offline
> Use cached template at ~\.vue-templates\webpack

? Generate project in current directory? Yes
? name js
? author Me <me@work.co.uk>
   vue-cli · [.babelrc] Missing helper: "if_or"

Had to git clone the webpack repo down, and move the vue-templates down to the .vue-templates/webpack/template dir:

C:\Users\my.user\.vue-templates\webpack\template