npx not found

[kevinwolfcr]

Describe the bug

Hello! I am running auto in an environment where I don't have npx installed (only Node and Yarn). And I am getting the following error when running auto shipit:

/bin/sh: npx: not found

    at ChildProcess.<anonymous> (/srv/workspace/node_modules/@auto-it/core/src/utils/exec-promise.ts:76:23)
    at ChildProcess.emit (events.js:315:20)
    at ChildProcess.EventEmitter.emit (domain.js:467:12)
    at Process.ChildProcess._handle.onexit (internal/child_process.js:277:12)Error: 
    at Object.execPromise (/srv/workspace/node_modules/@auto-it/core/src/utils/exec-promise.ts:17:20)
    at /srv/workspace/node_modules/@auto-it/npm/src/index.ts:691:17
    at _next0 (eval at create (/srv/workspace/node_modules/tapable/lib/HookCodeFactory.js:75:10), <anonymous>:18:1)
    at eval (eval at create (/srv/workspace/node_modules/tapable/lib/HookCodeFactory.js:75:10), <anonymous>:34:1)

To Reproduce

• Run auto shipit in an environment which lacks of npm and npx

Expected behavior

To be able to run auto shipit on environments that doesn't have npx. This could be solved by checking if a yarn.lock exists (and run yarn lerna), elsewere, default to npx.

Screenshots

N/A

Environment information:

Environment Information:

"auto" version: v10.28.0
"git"  version: v2.30.2
"node" version: v14.16.1

Project Information:

✔ Repository:      elkevinwolf/devtools (​https://github.com/elkevinwolf/devtools​)
✔ Author Name:     Kevin Wolf
✔ Author Email:    hi@kevinwolf.dev
✖ Current Version: v
✔ Latest Release:  @elkevinwolf/prettier-config@1.0.0 (​https://github.com/elkevinwolf/devtools/releases/tag/%40elkevinwolf/prettier-config%401.0.0​)

✔ Labels configured on GitHub project 

GitHub Token Information:

✔ Token:            [Token starting with ghp_]
✔ Repo Permission:  admin
✔ User:             elkevinwolf
✔ API:              undefined (​undefined​)
✔ Enabled Scopes:   admin:enterprise, admin:gpg_key, admin:org, admin:org_hook, admin:public_key, admin:repo_hook, delete:packages, delete_repo, gist, notifications, repo, user, workflow, write:discussion, write:packages
✔ Rate Limit:       4985/5000

Additional context

N/A

[zephraph]

Thanks for the report @elkevinwolf. It's a good callout. We actually changed it to be this way in #1936 😄. Obviously we should be more defensive in checking to ensure a particular sub-tool exists before relying on it.