Update: Replace async dependency with now-and-later (closes #23)

lib/helpers.js

@@ -4,9 +4,9 @@ var path = require('path');
 
 var fs = require('graceful-fs');
 var File = require('vinyl');
-var async = require('async');
 var convert = require('convert-source-map');
 var fileNormalize = require('file-normalize');
+var nal = require('now-and-later');
 
 var stripBom = fileNormalize.stripBOM;
 var appendBuffer = fileNormalize.appendBuffer;
@@ -76,7 +76,7 @@ function fixImportedSourceMap(file, state, callback) {
 
   state.map.sourcesContent = state.map.sourcesContent || [];
 
-  async.eachOf(state.map.sources, normalizeSourcesAndContent, callback);
+  nal.map(state.map.sources, normalizeSourcesAndContent, callback);
 
   function assignSourcesContent(sourceContent, idx) {
     state.map.sourcesContent[idx] = sourceContent;
@@ -152,7 +152,11 @@ function addSourceMaps(file, state, callback) {
     mapsLoaded,
   ];
 
-  async.applyEachSeries(tasks, file, state, done);
+  function apply(fn, key, cb) {
+    fn(file, state, cb);
+  }
+
+  nal.mapSeries(tasks, apply, done);
 
   function done(err) {
     if (err) {

package.json

@@ -26,10 +26,10 @@
     "coveralls": "npm run cover && istanbul-coveralls"
   },
   "dependencies": {
-    "async": "^2.1.4",
     "convert-source-map": "^1.5.0",
     "file-normalize": "^1.1.0",
     "graceful-fs": "^4.1.6",
+    "now-and-later": "^2.0.0",
     "object.defaults": "^1.0.0",
     "vinyl": "^2.0.0"
   },