use globby

lib/command/common/run-with-cover.js

@@ -150,7 +150,9 @@ function run(args, commandName, enableHooks, callback) {
         excludes.push(path.relative(process.cwd(), path.join(reportingDir, '**', '*')));
         matcherFor({
             root: config.instrumentation.root() || process.cwd(),
-            includes: opts.i || config.instrumentation.extensions(),
+            includes: opts.i || config.instrumentation.extensions().map(function(ext) {
+                return "**/*" + ext;
+            }),
             excludes: excludes
         },
             function (err, matchFn) {

lib/command/instrument.js

@@ -210,7 +210,9 @@ Command.mix(InstrumentCommand, {
             includes = ['**/*'];
         }
         else {
-            includes = iOpts.extensions();
+            includes = iOpts.extensions().map(function(ext) {
+                return "**/*" + ext;
+            });
         }
 
         instrumenter = new Instrumenter({

lib/util/file-matcher.js

@@ -4,7 +4,7 @@
  */
 
 var async = require('async'),
-    glob = require('glob'),
+    globby = require('globby'),
     fs = require('fs'),
     path = require('path'),
     seq = 0;
@@ -26,12 +26,11 @@ function filesFor(options, callback) {
     root = root || process.cwd();
     includes = includes && Array.isArray(includes) ? includes : [ '**/*.js' ];
     excludes = excludes && Array.isArray(excludes) ? excludes : [ '**/node_modules/**' ];
-    includes = includes.length > 1 ? "**/*@(" + includes.join('|') + ")" : includes[0];
 
     opts = { cwd: root, nodir: true, ignore: excludes };
     seq += 1;
     opts['x' + seq + new Date().getTime()] = true; //cache buster for minimatch cache bug
-    glob(includes, opts, function (err, files) {
+    globby(includes, opts, function (err, files) {
         if (err) { return callback(err); }
         if (relative) { return callback(err, files); }
 

package.json

@@ -105,6 +105,7 @@
     "escodegen": "1.8.x",
     "esprima": "2.7.x",
     "glob": "^5.0.15",
+    "globby": "^6.1.0",
     "handlebars": "^4.0.1",
     "js-yaml": "3.x",
     "mkdirp": "0.5.x",