docs: add minimum nodejs version in docs

[inigomarquinez]

The purpose of this PR is to update the documentation to indicate the minimum nodejs version required for each express version, as required here.

I have added this information:

• in the FAQ section
• referenced the FAQ section in the installation guide
• in the express 4.x API
• in the express 5.x API

Warning

Please note that I have only made the change for the English version, as I don't know how translations of content into other languages are handled.

[UlisesGascon]

LGTM! BTW this is related to expressjs/express#5595

[crandmck]

Thanks for taking this on @inigomarquinez ! This is long overdue IMO... It will also close #1478.

However, I would ask that you make some changes. Rather than put the information in an FAQ, it should be stated right up front in "Installing".... So instead of

Check the minimum required Node.js for each Express version [here]

Just put the text you have in the FAQ now into "Installing". This is more direct, since the reader doesn't have to click the link, and the Node version is really a prerequisite so the reader needs to know it right up front.

Since this has been missing from the docs for so long, you can leave the FAQ for now. Otherwise, I would say it wouldn't be needed if you put it "Installing".

I have a couple other specific comments, as well, which I'll put inline.

[crandmck]

"Express 5.0 requires..."

Since 5.x is available now (in beta) it should be present tense.

[inigomarquinez]

Thanks @crandmck !

Change added here

[crandmck]

"What version of Node.js does Express require?"

Elsewhere you use "require" instead of "support", which is preferable IMO.

[inigomarquinez]

Thanks @crandmck ! I'm not a native English speaker, so I welcome these language suggestions.

Change added here.

[inigomarquinez]

Thanks for taking this on @inigomarquinez ! This is long overdue IMO... It will also close #1478.

However, I would ask that you make some changes. Rather than put the information in an FAQ, it should be stated right up front in "Installing".... So instead of

Check the minimum required Node.js for each Express version [here]

Just put the text you have in the FAQ now into "Installing". This is more direct, since the reader doesn't have to click the link, and the Node version is really a prerequisite so the reader needs to know it right up front.

Since this has been missing from the docs for so long, you can leave the FAQ for now. Otherwise, I would say it wouldn't be needed if you put it "Installing".

I have a couple other specific comments, as well, which I'll put inline.

Thanks @crandmck !

I've pushed some new commits with your suggestions!

It now looks this way

[crandmck]

Thanks @inigomarquinez !!