title: vue-cli-service: SyntaxError: Unexpected token '...'. Expected a property name
body: <p>I'm working on putting together a small app using vue, and I specifically need it to run on a device that does not support ES6.  I'm using <code>vue-cli-service build</code> to build, and when trying to open this page on my ES5 device, I'm seeing this error <code>SyntaxError: Unexpected token '...'. Expected a property name.</code></p>
  
  <p>I have installed babel, and added this to my .babelrc: <code>{ "presets": ["@babel/preset-env"] }</code></p>
  
  <p>I'm not really sure what else to try, I haven't been able to find anything that specifically addresses this.  Even the vue-cli-service documentation suggests ways to support polyfill for ES5, but I don't think this is the same thing.</p>