Latest version cannot create anything without yarn

Version

3.4.0

Environment info

Environment Info:

  System:
    OS: Linux 4.20 Fedora 29 (Workstation Edition) 29 (Workstation Edition)
    CPU: (8) x64 Intel(R) Core(TM) i7-7820HQ CPU @ 2.90GHz
  Binaries:
    Node: 10.14.1 - /usr/bin/node
    Yarn: Not Found
    npm: 6.4.1 - /usr/bin/npm
  Browsers:
    Chrome: 72.0.3626.81
    Firefox: 65.0
  npmGlobalPackages:
    @vue/cli: 3.3.0 (reverted, this one works while latest is broken)

Steps to reproduce

1. use clean machine
2. install node 10 with npm, no yarn
3. npm i -g @vue/cli
4. vue create hello

What is expected?

Wizard starts, asking for options e.g. which package manager to use.

What is actually happening?

Yarn is missing (although not needed), wizard and childprocess crash.

ERROR  Error: spawn yarn ENOENT
Error: spawn yarn ENOENT
    at Process.ChildProcess._handle.onexit (internal/child_process.js:232:19)
    at onErrorNT (internal/child_process.js:407:16)
    at process._tickCallback (internal/process/next_tick.js:63:19)
    at Function.Module.runMain (internal/modules/cjs/loader.js:744:11)
    at startup (internal/bootstrap/node.js:285:19)
    at bootstrapNodeJSCore (internal/bootstrap/node.js:739:3)

---

Any attempts in forcing npm as a packageManager (via .vuerc) were futile, either returning the same error or this one:

ERROR  ~/.vuerc may be outdated. Please delete it and re-run vue-cli in manual mode.

[SamuelEarl]

I ran into a similar issue with a very similar error message, which I could not figure out for a long time. I wanted to record what I discovered in the hope that it could help someone in the future.

When I would create new Vue projects with vue create <project name> it would create a yarn.lock file, even though I was using npm. So I tried uninstalling Yarn and removing all necessary Yarn files to prevent this from happening. After uninstalling Yarn, I got a Error: spawn yarn ENOENT message in my terminal (very similar to the one shown above) and I could not create any Vue projects.

After trying a bunch of things, I reinstalled Yarn and everything worked again. I could see that Vue CLI was clearly creating projects with Yarn, but I didn’t know why. And then I came across this post: https://github.com/vuejs/vue-cli/issues/1300. I also read the documentation that explains the .vuerc file here: https://cli.vuejs.org/guide/creating-a-project.html#vue-create. That solved everything. I opened the ~/.vuerc file and set the package manager to npm and all is well now.

[davidmeirlevy]

had the same issue. i removed ~/.vuerc file, and now it works.