Fails to compile arithmetic on result of map-get

[akiellor]

• NPM version: 3.10.10
• Node version: v6.10.0
• Node Process:

{ http_parser: '2.7.0',
  node: '6.10.0',
  v8: '5.1.281.93',
  uv: '1.9.1',
  zlib: '1.2.8',
  ares: '1.10.1-DEV',
  icu: '58.2',
  modules: '48',
  openssl: '1.0.2k' }

• Node Platform: linux
• Node architecture: x64
• node-sass version:

node-sass	4.5.2	(Wrapper)	[JavaScript]
libsass  	3.5.0.beta.2	(Sass Compiler)	[C/C++]

• npm node-sass versions (npm ls node-sass): 4.5.2

When encountering a syntax, or compilation issue:

• Open an issue on LibSass. You
  may link it back here, but any change will be required there, not here

If you delete this text without following it, your issue will be closed.

Minimal reproducible scenario:

root@f55809ebd5c9:/usr/src/app# node-sass <<EOS
\$map-spaces: (
  xs: 3rem / 16
);
\$var: map-get(\$map-spaces, 'xs') * 5;

.size {
  height: \$var;
}
EOS
{
  "status": 1,
  "file": "stdin",
  "line": 4,
  "column": 7,
  "message": "Undefined operation: \"3rem/16 times 5\".",
  "formatted": "Error: Undefined operation: \"3rem/16 times 5\".\n        on line 4 of stdin\n>> $var: map-get($map-spaces, 'xs') * 5;\n   ------^\n"
}

This example works fine in https://www.sassmeister.com/ and outputs the following:

.size {
  height: 0.9375rem;
}

[nschonni]

Can you file an issue with https://github.com/sass/libsass/issues and link it back here, thanks!

[xzyfer]

This is already fixed on LibSass master and will be in node-sass on the next bump.

[gauthierm]

What's the ETA for this fix? libsass 3.5.0.beta.3 was released in February and node-sass is still using 3.5.0.beta.2 containing the bug.

[gauthierm]

sass/libsass#2309 is the fixed issue in libsass.

[gauthierm]

#1935 is a duplicate of this issue.

[nschonni]

Duplicate of #1935