correcting error display and TRAVIS_TAG logic

Author: samuelcolvin

build/build.js

@@ -11,7 +11,8 @@ let webpackConfig = require('./webpack.prod.conf')
 
 console.log('building for production...')
 
-rm('-r', config.build.build_dir)
+// remove the entire ./dist directory to avoid confusion
+rm('-r', path.resolve(__dirname, '../dist'))
 
 webpack(webpackConfig, function (err, stats) {
   if (err) throw err

config.js

@@ -1,7 +1,11 @@
 var path = require('path')
 
-if (process.env['TRAVIS_TAG'] !== undefined) {
-  console.log('detected TRAVIS_TAG')
+if (process.env['TRAVIS_TAG']) {
+  console.log(`detected TRAVIS_TAG "${process.env['TRAVIS_TAG']}", building for release deploy.`)
+  if (process.env['TRAVIS_TAG'] !== process.env.npm_package_version) {
+    throw `travis tag does not match npm_pckage_version: \
+${process.env['TRAVIS_TAG']} vs ${process.env.npm_package_version}`
+  }
   var prod_build_dir = path.resolve(__dirname, 'dist', process.env.npm_package_version)
   var prod_public_path = 'https://cdn.tutorcruncher.com/socket/' + process.env.npm_package_version + '/'
 } else {

src/app.vue

@@ -1,11 +1,11 @@
 <template>
   <div id="tcs-app">
-    <div v-if="$root.errors" class="tcs-errors">
+    <div v-if="$root.error" class="tcs-errors">
       <h2>Error</h2>
       <p>
         An error occurred with TutorCruncher socket:
       </p>
-      <p class="tcs-error-content">{{ $root.errors }}</p>
+      <p class="tcs-error-content">{{ $root.error }}</p>
       <p>
       <dl>
         <dt>If you're visiting this site:</dt>