lib/extensions.js
function getBinaryUrl() {
  var site = flags['--sass-binary-site'] ||
             process.env.SASS_BINARY_SITE  ||
             pkg.nodeSassConfig.binarySite;
	return [site, 'v' + pkg.version, sass.binaryName].join('/');
}
function getBinaryUrl() {
  var site = flags['--sass-binary-site'] ||
             process.env.SASS_BINARY_SITE  ||
             pkg.nodeSassConfig.binarySite;
	return [site, 'v' + pkg.version, sass.binaryName].join('/');
}
function getBinaryUrl ( ) { var site = flags [ '--sass-binary-site' ] || process . env . SASS_BINARY_SITE || pkg . nodeSassConfig . binarySite ; return [ site , 'v' + pkg . version , sass . binaryName ] . join ( '/' ) ; }
Determine the URL to fetch binary file from.
By default feth from the node-sass distribution
site on GitHub.

The default URL can be overriden using
the environment variable SASS_BINARY_SITE
or a command line option --sass-binary-site:

node scripts/install.js --sass-binary-site http://example.com/

The URL should to the mirror of the repository
laid out as follows:

SASS_BINARY_SITE/

v3.0.0
v3.0.0/freebsd-x64-14_binding.node
....
v3.0.0
v3.0.0/freebsd-ia32-11_binding.node
v3.0.0/freebsd-x64-42_binding.node
... etc. for all supported versions and platforms

@api private
Determine the URL to fetch binary file from . By default feth from the node - sass distribution site on GitHub .