How to use the @microsoft/web-library-build.sass function in @microsoft/web-library-build

'use strict';

let gulp = require('gulp');
let build = require('@microsoft/web-library-build');

build.task('sass', build.sass);
build.task('karma', build.karma);

// initialize tasks.
build.initialize(gulp);

// Always fail on test failures.
build.karma.setConfig({
  failBuildOnErrors: true
});

// Use css modules.
build.sass.setConfig({
  useCSSModules: true,
  moduleExportName: ''
});

'use strict';

let build = require('@microsoft/web-library-build');
let gulp = require('gulp');
let buildConfig = build.getConfig();
let distFolder = buildConfig.distFolder;
let path = require('path');
let packageFolder = buildConfig.packageFolder || '';
let isProduction = process.argv.indexOf('--production') >= 0;
let isNuke = process.argv.indexOf('nuke') >= 0;

// Use css modules and use export =
build.sass.setConfig({
  useCSSModules: true,
  moduleExportName: ''
});

// Configure custom lint overrides.
let rules = Object.assign(
  {},
  require('./node_modules/@microsoft/gulp-core-build-typescript/lib/defaultTslint.json').rules,
  require('./node_modules/office-ui-fabric-react-tslint/tslint.json').rules,
  require('./tslint.json').rules
);

// Configure TypeScript.
build.TypeScriptConfiguration.setTypescriptCompiler(require('typescript'));
// Use css modules.
build.sass.setConfig({

]
  }
});

// Produce AMD bits in lib-amd on production builds.
if (isProduction || isNuke) {
  build.setConfig({
    libAMDFolder: path.join(packageFolder, 'lib-amd')
  });
}

// Short aliases for subtasks.
build.task('webpack', build.webpack);
build.task('tslint', build.tslint);
build.task('ts', build.typescript);
build.task('sass', build.sass);

// initialize tasks.
build.initialize(gulp);

//       .pipe(casperJs(
//         {
//           screenshots: 'visualtests/baseline',
//           comparisonResultRoot: 'visualtests/results'
//         })).on('end', done);
//   }
// });


// Always fail on test failures.
build.karma.setConfig({
  failBuildOnErrors: true
});

// Use css modules.
build.sass.setConfig({
  useCSSModules: true,
  moduleExportName: ''
});

// Copy fabric-core to dist to be published with fabric-react.
build.preCopy.setConfig({
  shouldFlatten: false,
  copyTo: {
    [path.join(distFolder, 'sass')]: [
      'node_modules/office-ui-fabric-core/dist/sass/**/*.*'
    ],
    [path.join(distFolder, 'css')]: [
      'node_modules/office-ui-fabric-core/dist/css/**/*.*'
    ]
  }
});

'use strict';

let build = require('@microsoft/web-library-build');
let serial = build.serial;

build.tslint.isEnabled = () => false;
build.karma.isEnabled = () => false;

// Configure TypeScript.
build.TypeScriptConfiguration.setTypescriptCompiler(require('typescript'));

// Use css modules.
build.sass.setConfig({
  useCSSModules: true,
  moduleExportName: ''
});

// Set up a "rushBuild" subTask that will spawn rush build
let fs = require('fs');
let spawn = require('child_process').spawn;
let rawStdout = new fs.SyncWriteStream(1, { autoClose: false });

let rushBuild = build.subTask('rushbuild', (gulp, options, done) => {
  let child = spawn(
    'rush',
    ['build', '--to', 'todo-app']
  );

  child.stdout.on('data', data => rawStdout.write(data));

build.webpack.isEnabled = () => false;

// Configure custom lint overrides.
let rules = Object.assign(
  {},
  require('./node_modules/@microsoft/gulp-core-build-typescript/lib/defaultTslint.json').rules,
  require('./node_modules/office-ui-fabric-react-tslint/tslint.json').rules,
  require('./tslint.json').rules
);
build.tslint.setConfig({
  lintConfig: { rules },
  displayAsWarning: false
});

// Use css modules.
build.sass.setConfig({
  useCSSModules: true,
  moduleExportName: ''
});

// Custom build steps.
build.task('tslint', build.tslint);

build.initialize(gulp);

'use strict';

let gulp = require('gulp');
let build = require('@microsoft/web-library-build');

build.task('tslint', build.tslint);
build.task('sass', build.sass);
build.task('karma', build.karma);
build.task('webpack', build.webpack);

// initialize tasks.
build.initialize(gulp);

// Always fail on test failures.
build.karma.setConfig({
  failBuildOnErrors: true
});

build.task('webpack', build.webpack);
build.task('sass', build.sass);
build.task('karma', build.karma);
build.task('ts', build.typescript);
build.task('tslist', build.tslint);

// initialize tasks.
build.initialize(gulp);

// Always fail on test failures.
build.karma.setConfig({
  failBuildOnErrors: true
});

// Use css modules.
build.sass.setConfig({
  useCSSModules: true,
  moduleExportName: ''
});

'use strict';

let path = require('path');
let build = require('@microsoft/web-library-build');

build.sass.setConfig({ useCSSModules: true });
build.webpack.setConfig({ configPath: null });

build.setConfig({
  libAMDFolder: path.join(build.getConfig().packageFolder, 'lib-amd'),
  libES6Folder: path.join(build.getConfig().packageFolder, 'lib-es6')
});

build.preCopy.cleanMatch = ['src/preCopyTest.ts'];

build.initialize(require('gulp'));