Allow for git cloning the repo if set

_util/download-module.js

@@ -1,17 +1,60 @@
+const cp = require('child_process');
 const getConfig = require('./get-config');
 const fse = require('fs-extra');
 const request = require('request');
 const tar = require('tar');
 const zlib = require('zlib');
 const getUrl = require('./get-module-download-url');
+const getTag = require('./get-tag-info');
 const moduleParentPath = require('./module-parent-path');
 
 module.exports = function downloadModule() {
-  return getUrl()
-    .then(download);
+  const useGitClone = getConfig('use_git_clone');
+
+  if (!useGitClone) {
+    return getUrl()
+      .then(downloadTarball);
+  }
+
+  return gitCloneRepo();
 };
 
-function download(url) {
+function gitCloneRepo() {
+  const token = getConfig('gh_token');
+  const module = getConfig('module');
+
+  if (!token) {
+    return Promise.reject(new Error("The `gh_token` config isn't set. You're Gonna Have A Bad Time."));
+  }
+
+  if (!module) {
+    return Promise.reject(new Error("The `module` config isn't set. You're Gonna Have A Bad Time."));
+  }
+
+  return getTag()
+    .then(({moduleVersion}) => {
+      const url = `https://${token}@github.com/${module}`;
+      const cwd = moduleParentPath();
+
+
+      fse.removeSync(cwd);
+      fse.ensureDirSync(cwd);
+
+      return new Promise((resolve, reject) => {
+        cp.exec(`git clone ${url} --branch ${moduleVersion} --depth=1`, {cwd}, (error, stderr, stdout) => {
+          if (error) {
+            console.log(`Could not clone. Error code: ${error}`);
+            console.log(stderr);
+            return reject(error);
+          }
+
+          resolve();
+        });
+      });
+    })
+}
+
+function downloadTarball(url) {
   console.log(`${new Date().toString()} downloading module from ${url}`)
   const opts = {
     headers: {