fs Promises API still marked as experimental for Node 10

[kibertoad]

https://nodejs.org/dist/latest-v10.x/docs/api/fs.html still reports fs-promises API to be experimental, even though it was declared stable in #26581
Shouldn't same apply to Node 10 as well, or some code still needs to be backported first?

[lpinca]

I think the PR has not been backported to v10.x yet.

[BridgeAR]

@lpinca is correct that this is not yet backported. This will likely be the case in later versions.

[billiegoose]

For anyone else running into this via Google, I found a way to distinguish between the two cases. In v12 the promises property is enumerable:

v10 - prints warning

> Object.getOwnPropertyDescriptor(fs, 'promises')
{ get: [Function: get],
  set: undefined,
  enumerable: false,
  configurable: true }

v12 - does not

> Object.getOwnPropertyDescriptor(fs, 'promises')
{
  get: [Function: get],
  set: undefined,
  enumerable: true,
  configurable: true
}