error: no template named 'remove_cv_t' in namespace 'std'; did you mean 'remove_cv'?

[airwsw]

• Version:v16.0.0
• Platform:Darwin 20.3.0 arm64 (Apple Silicon)

What steps will reproduce the bug?

When building node-sass@5.0.0, the error occurred.

How often does it reproduce? Is there a required condition?

ALWAYS, arm64 (Apple Silicon)

What is the expected behavior?

NO error

What do you see instead?

/Users/***/Library/Caches/node-gyp/16.0.0/include/node/v8-internal.h:452:38: error: no template named 'remove_cv_t' in namespace 'std'; did you mean 'remove_cv'?
            !std::is_same<Data, std::remove_cv_t<T>>::value>::Perform(data);
                                ~~~~~^~~~~~~~~~~
                                     remove_cv
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../include/c++/v1/type_traits:697:50: note: 'remove_cv' declared here
template <class _Tp> struct _LIBCPP_TEMPLATE_VIS remove_cv
                                                 ^
1 error generated.
make: *** [Release/obj.target/binding/src/binding.o] Error 1
gyp ERR! build error 
gyp ERR! stack Error: `make` failed with exit code: 2
gyp ERR! stack     at ChildProcess.onExit (/Users/***/*/node_modules/node-gyp/lib/build.js:194:23)
gyp ERR! stack     at ChildProcess.emit (node:events:365:28)
gyp ERR! stack     at Process.ChildProcess._handle.onexit (node:internal/child_process:290:12)
gyp ERR! System Darwin 20.3.0
gyp ERR! command "/opt/homebrew/Cellar/node/16.0.0/bin/node" "/Users/***/*/node_modules/node-gyp/bin/node-gyp.js" "rebuild" "--verbose" "--libsass_ext=" "--libsass_cflags=" "--libsass_ldflags=" "--libsass_library="
gyp ERR! cwd /Users/***/*/node_modules/node-sass
gyp ERR! node -v v16.0.0

Additional information

Here is the ref link:

node/deps/v8/include/v8-internal.h

Lines 450 to 453 in e46c680

	V8_INLINE void PerformCastCheck(T* data) {
	CastCheck<std::is_base_of<Data, T>::value &&
	!std::is_same<Data, std::remove_cv_t<T>>::value>::Perform(data);
	}

When replacing remove_cv_t with remove_cv, it seems to work well.

[XadillaX]

I think it's a bug of node-sass.

Refs: microsoft/node-pty#441 (comment) and microsoft/node-pty#433

[Ayase-252]

I think Node.js v16 isn't supported by node-sass@5.0.0 from the release note.

There is also an ongoing issue sass/node-sass#3077 in order to support Node.js v16.

If you need to use node-sass now, I'd suggest to revert to the latest Node v14 LTS.

[airwsw]

Thanks!

The latest Node v14 LTS has not supported Apple Silicon natively, while v16 is the best choice for me. Fortunately, I found that sass/node-sass#3091 is trying to upgrade the cpp standard to 14, thereby fixing the macOS building errors.

[Daavidaviid]

I'm downgrading to 15.14 following : https://michael.codes/posts/nodejs_apple_silicon/
Hopefully it will work 🤞

EDIT: it worked, but my macbook air m1 got really hot during the node build (>10mins)

[bryanvaz]

Ok managed to "solve" the issue.
The issue seems to be tied to the cpp compiler specified by the dependency's bindings.gyp when building native addons on Apple Silicon.

TLDR (though may have unexpected consequences)

yarn install -std=c++17

This arises, because remove_cv_t is only supported since C++14 (ref). For whatever reason, Node 16, when paired with cpp on Apple Silicon does not have the ability to properly resolve the incorrect remove_cv_t reference if cpp is given a language flag that is less than -std=c++14 (i.e. -std=c++11 in the case ofnode-sass.)

Obviously the best option would be to submit PRs to bump the cpp flags of dependencies. However for dependencies deep in the tree, this can take sometimes months or years bubble up to the top-level dependency. Brute forcing the cpp flags seems to be the only option until the environment shakes out.

Not sure what the equivalent npm command should be, but if someone who is more familiar with npm can post the correct flag, that would be great.

Thanks to @stevecondylios for the solution, from microsoft/node-pty#441 (comment) for the solution