WebEssentials solution options:
It looks like the file name and structure changed in WE 2015 (which makes sense to see how the feature set has changed).
You can create a file WebEssentials2015-Settings.jsonby clicking on the link:
"Web Essentials> Create Solution Parameters" in Visual Studio 2015.


Web compiler configuration:
-, , compilerconfig.json compilerconfig.json.defaults, .
- - .
:
compilerconfig.json
compilerconfig.json , .
, :
[
{
"outputFile": "output/site.css",
"inputFile": "input/site.less",
"minify": {
"enabled": true
},
"includeInProject": true,
"options":{
"sourceMap": false
}
},
{
"outputFile": "output/scss.css",
"inputFile": "input/scss.scss",
"minify": {
"enabled": true
},
"includeInProject": true,
"options":{
"sourceMap": true
}
}
]
compilerconfig.json compilerconfig.json.defaults .
CompileOnBuild:
NuGet "BuildWebCompiler". -
"-p > ..." , , LSS, Sass, JSX CoffeeScript Transpilation, Web Compiler, .

(: , , "CompileOnBuild" , NuGet "BuildWebCompiler" NuGet).