hack to test with vue3 and vue2

Problem is that if we say "2 || 3-beta" for vue, yarn always prefers 2 because
it's stable. So we have 3-beta in package.json only (and then it installs fine)
and force vue2 manually.

Author: weaverryan

package.json

@@ -93,8 +93,8 @@
     "ts-loader": "^5.3.0",
     "typescript": ">=2.9",
     "url-loader": "^4.0.0",
-    "vue": "^2.3.4 || ^3.0.0beta.9",
-    "vue-loader": "^15.0.11 || ^16.0.0-alpha.1",
+    "vue": "^3.0.0beta.9",
+    "vue-loader": "^16.0.0-alpha.1",
     "vue-template-compiler": "^2.3.4",
     "webpack-notifier": "^1.6.0",
     "zombie": "^6.1.4"

scripts/force-lowest-dependencies.js

@@ -12,6 +12,9 @@
 const fs = require('fs');
 const childProcess = require('child_process');
 
+const vueLowVersion = '^2.3.4';
+const vueLoaderLowVersion = '^15.0.11';
+
 function getLowestVersion(dependency, range) {
     return new Promise((resolve, reject) => {
         childProcess.exec(
@@ -108,6 +111,11 @@ fs.readFile('package.json', (error, data) => {
                 resolve();
             });
         }))
+        .then(() => {
+            console.log('Manually forcing Vue to version 2');
+            packageInfo.devDependencies.vue = vueLowVersion;
+            packageInfo.devDependencies['vue-loader'] = vueLoaderLowVersion;
+        })
         .then(() => {
             console.log('Updated package.json file with lowest dependency versions: ');