Don't deploy homedir, downloads or desktop

This closes #99

bin/now-deploy.js

@@ -23,6 +23,7 @@ import promptOptions from '../lib/utils/prompt-options'
 import {handleError, error} from '../lib/error'
 import {fromGit, isRepoPath, gitPathParts} from '../lib/git'
 import readMetaData from '../lib/read-metadata'
+import checkPath from '../lib/utils/check-path'
 
 const argv = minimist(process.argv.slice(2), {
   string: [
@@ -250,6 +251,9 @@ async function sync(token) {
     }
   }
 
+  // Make sure that directory is not too big
+  await checkPath(path)
+
   if (!quiet) {
     if (gitRepo.main) {
       const gitRef = gitRepo.ref ? ` at "${chalk.bold(gitRepo.ref)}" ` : ''

lib/utils/check-path.js

@@ -0,0 +1,47 @@
+// Native
+import os from 'os'
+import path from 'path'
+
+// Ours
+import {error} from '../error'
+
+export default async dir => {
+  if (!dir) {
+    return
+  }
+
+  const home = os.homedir()
+  let location
+
+  const paths = {
+    home,
+    desktop: path.join(home, 'Desktop'),
+    downloads: path.join(home, 'Downloads')
+  }
+
+  for (const locationPath in paths) {
+    if (!{}.hasOwnProperty.call(paths, locationPath)) {
+      continue
+    }
+
+    if (dir === paths[locationPath]) {
+      location = locationPath
+    }
+  }
+
+  let locationName
+
+  switch (location) {
+    case 'home':
+      locationName = 'user directory'
+      break
+    case 'downloads':
+      locationName = 'downloads directory'
+      break
+    default:
+      locationName = location
+  }
+
+  error(`You're trying to deploy your ${locationName}.`)
+  process.exit(1)
+}