Activate Object Spread in Templates of a Vue CLI v3 Project

vue.config.js

// Store this as vue.config.js in your project root
// to enable object spread in templates.
// Note that you'll need to provide an Object.assign()
// polyfill for legacy browsers.

module.exports = {
  chainWebpack: config => {
    config.module
      .rule('vue')
      .use('vue-loader')
        .loader('vue-loader')
        .tap(options => {
          return {
            ...options,
            transpileOptions: {
              ...(options.transpileOptions || {}),
              objectAssign: 'Object.assign'
            }
          }
        })
  }
}