Why is 'wasi' module not displayed?

[Neos21]

I have a small question.
When I use the package, the wasi module was not included in the list.
But the builtin-modules.json is including it.
What is this difference?

[Neos21]

My environment:

• MacBook Pro 16-inch 2019
• Node.js v18.5.0

$ sw_vers
ProductName:    macOS
ProductVersion: 12.4
BuildVersion:   21F79

$ node -v
v18.5.0

$ npm -v
8.12.1

[sindresorhus]

It requires the --experimental-wasi-unstable-preview1 flag per Node.js docs.