feat(deps): running npm update and prune before running the command, c…

…loses #75

package.json

@@ -37,7 +37,7 @@
     "is-online": "5.0.0",
     "lazy-ass": "1.1.0",
     "lodash": "3.10.1",
-    "npm-utils": "0.4.0",
+    "npm-utils": "1.0.0",
     "optimist": "0.6.1",
     "q": "2.0.3",
     "quote": "0.4.0",

src/next-update.js

@@ -1,12 +1,11 @@
 var la = require('lazy-ass');
 var check = require('check-more-types');
+var verify = check.verify;
 require('console.json');
 
 var log = require('debug')('next-update');
 var Q = require('q');
 Q.longStackSupport = true;
-var check = require('check-types');
-var verify = check.verify;
 var depsOk = require('deps-ok');
 var _ = require('lodash');
 
@@ -17,6 +16,7 @@ var testVersions = require('./test-module-version').testModulesVersions;
 var runTest = require('./test-module-version').testPromise;
 var getDependenciesToCheck = require('./dependencies');
 var reportAvailable = require('./report-available');
+var npmUtils = require('npm-utils');
 
 var boundConsoleLog = console.log.bind(console);
 
@@ -46,19 +46,26 @@ function checkDependenciesInstalled() {
         if (depsOk(process.cwd())) {
             defer.resolve();
         } else {
-            var msg = 'Current installation is not complete. Please run `npm install` or `bower install` first';
+            var msg = 'Current installation is incomplete. Please run `npm install` or `bower install` first';
             defer.reject(new Error(msg));
         }
     });
     return defer.promise;
 }
 
+function cleanDependencies() {
+    var update = _.partial(npmUtils.test, 'npm update');
+    var prune = _.partial(npmUtils.test, 'npm prune');
+    return update().then(prune);
+}
+
 function checkCurrentInstall(options) {
     options = options || {};
     var log = options.tldr ? _.noop : boundConsoleLog;
     log('checking if the current state works');
 
-    return checkDependenciesInstalled()
+    return cleanDependencies()
+        .then(checkDependenciesInstalled)
         .then(function () {
             return runTest(options, options.testCommand)();
         })