NPX has a bug. When you call, for example, one of this:

npx create-react-app

npx cowsay "I'm a cow!"

npx new-typescript-module

…then you will do it successfully. But NPX will install it to your NPX cache, and NPX will not be watching lifetime of its cache. NPX package will be stored in the cache forever. When NPX-utility was updated, the cache will not be updated. I'll repeat, it's a bug.

If you sometimes use a NPX-utility, you shall store an old version of this package in your cache. And every package update will not be seen by NPX. Cache clearing will solve this trouble.

If you are developing a new NPX-package, you will test it. But you can publish a bugful package, and after a fix and re-publishing you will see same bug. I want you shall not repeat my expirience in bug-finding and source-code-jumping.

npx clear-npx-cache

Expected behavior:

• Take a cache directory from NPM configuration (npm config get cache)
• If in this directory exists _npx
  • Then remove it recursely
  • Otherwise create a new _npx directory