npxm

npxm (Node Package Version Manager)

It is similar to npx but cached.

Compare with npx

Each use of npx downloads the package from internet while npxm keeps used packages in its cache. So repeated use of the same package is instant.

# this will always download fresh package - take your time
npx gatsby new gatsby-site

# first time download is necesasary
npxm gatsby new gatsby-site

# second time download is omited and task is ran instantly
npxm gatsby new gatsby-second-site

Install and use

Do you want to use multiple versions of mango-cli? Be sure to start with mango-cli uninstalled.

npm i -g npxm

npxm
#> This is npxm@0.1.0

npxm --install mango-cli
#> [npxm] Adding mango-cli
#> [npxm] Downloading mango-cli@3.1.2
#> …

npxm mango-cli --version
#> [npxm] Adding mango-cli
#> [npxm] mango-cli@3.1.2 already installed.
#> [npxm] Running `mango --version` (mango-cli@3.1.2 at /Users/viliamkopecky/www/npxm/installed/mango-cli/3.1.2)
#> 3.1.2

Run at specific version

npxm mango-cli@2 --version
#> [npxm] Adding mango-cli@2
#> [npxm] Downloading mango-cli@2.7.1
#> …
#> [npxm] Running `mango --version` (mango-cli@2.7.1 at /Users/viliamkopecky/www/npxm/installed/mango-cli/2.7.1)
2.7.1

Now you can build older projects with legacy mango-cli version

# In your project directory…

npxm mango-cli@1 install
#> [npxm] Adding mango-cli@1
#> [npxm] Downloading mango-cli@1.8.1

npxm mango-cli@1 build
#> [npxm] Adding mango-cli@1
#> [npxm] mango-cli@1.8.1 already installed.
#> [npxm] Running `mango build` (mango-cli@1.8.1 at /Users/viliamkopecky/www/npxm/installed/mango-cli/1.8.1)
#> mango-cli v1.8.1
#> …

Link specific version as global

Using npm link.

mango --version
#> command not found: mango

# Links a package as global
npxm --link mango-cli@2
#> [npxm] Adding mango-cli@2
#> [npxm] mango-cli@2.7.1 already installed.
#> [npxm] Linking mango-cli@2
#> …

mango --version
#> 2.7.1

Other

# Cleans cache
npxm --cleanup