src/processResult.js
function processResult(loaderContext, resultPromise) {
  const { callback } = loaderContext;

  resultPromise
    .then(
      ({ css, map, imports }) => {
        imports.forEach(loaderContext.addDependency, loaderContext);
        return {
          // Removing the sourceMappingURL comment.
          // See removeSourceMappingUrl.js for the reasoning behind this.
          css: removeSourceMappingUrl(css),
          map: typeof map === 'string' ? JSON.parse(map) : map,
        };
      },
      (lessError) => {
        if (lessError.filename) {
          loaderContext.addDependency(lessError.filename);
        }
        throw formatLessError(lessError);
      }
    )
    .then(({ css, map }) => {
      callback(null, css, map);
    }, callback);
}
function processResult(loaderContext, resultPromise) {
  const { callback } = loaderContext;

  resultPromise
    .then(
      ({ css, map, imports }) => {
        imports.forEach(loaderContext.addDependency, loaderContext);
        return {
          // Removing the sourceMappingURL comment.
          // See removeSourceMappingUrl.js for the reasoning behind this.
          css: removeSourceMappingUrl(css),
          map: typeof map === 'string' ? JSON.parse(map) : map,
        };
      },
      (lessError) => {
        if (lessError.filename) {
          loaderContext.addDependency(lessError.filename);
        }
        throw formatLessError(lessError);
      }
    )
    .then(({ css, map }) => {
      callback(null, css, map);
    }, callback);
}
function processResult ( loaderContext , resultPromise ) { const { callback } = loaderContext ; resultPromise . then ( ( { css , map , imports } ) => { imports . forEach ( loaderContext . addDependency , loaderContext ) ; return { // Removing the sourceMappingURL comment. // See removeSourceMappingUrl.js for the reasoning behind this. css : removeSourceMappingUrl ( css ) , map : typeof map === 'string' ? JSON . parse ( map ) : map , } ; } , ( lessError ) => { if ( lessError . filename ) { loaderContext . addDependency ( lessError . filename ) ; } throw formatLessError ( lessError ) ; } ) . then ( ( { css , map } ) => { callback ( null , css , map ) ; } , callback ) ; }
Removes the sourceMappingURL from the generated CSS, parses the source map and calls the next loader.

@param {loaderContext} loaderContext
@param {Promise<LessResult>} resultPromise
Removes the sourceMappingURL from the generated CSS parses the source map and calls the next loader .