src: condense experimental warning message

[Trott]

Before:

$ node --watch fhqwhgads
(node:26196) ExperimentalWarning: Watch mode is an experimental feature. This feature could change at any time
(Use `node --trace-warnings ...` to show where the warning was created)

After:

$ ./node --watch fhqwhgads
(node:78033) ExperimentalWarning: Watch mode is an experimental feature and might change at any time
(Use `node --trace-warnings ...` to show where the warning was created)

[nodejs-github-bot]

CI: https://ci.nodejs.org/job/node-test-pull-request/47854/

[Trott]

Hmmm...that didn't work...guess the punctuation gets pulled out later on.....

[Trott]

Ideally, I think, this would be just one sentence (which it is now) and might omit the period if it is being followed by a stack trace but include a period if it isn't.

[Trott]

Leaving the period off when it's a single sentence isn't as weird and noticeable as when it's multiple sentences so I think I'll leave it like that.

[Trott]

Honestly, I wonder if the message would be better as just " is an experimental feature" and that's it. That would probably get these messages under 80 chars for the most part and probably not reduce their effectiveness. "Might change at any time" is kind of weird anyway. It's not going to change at any time. It's going to change when there's a new release and the user updates. I'd think "experimental" is plenty scary enough and we don't need to explicitly warn people that the feature might change.

[nodejs-github-bot]

CI: https://ci.nodejs.org/job/node-test-pull-request/47855/

[aduh95]

There are test failures to address.

"Might change at any time" is kind of weird anyway. It's not going to change at any time. It's going to change when there's a new release and the user updates.

I guess it's there to communicate that semver rules don't apply for experimental features.

[nodejs-github-bot]

CI: https://ci.nodejs.org/job/node-test-pull-request/47893/

[nodejs-github-bot]

Landed in 1255db7