core-js/modules/es6（以下略）が見つかりません。の場合

$ npm run serve
$ vue-cli-service serve

These dependencies were not found:

core-js/modules/es6.array.iterator
core-js/modules/es6.function.name
core-js/modules/es6.number.constructor
core-js/modules/es6.object.assign
core-js/modules/es6.object.to-string
core-js/modules/es6.promise
core-js/modules/es6.regexp.match
core-js/modules/es6.regexp.replace
core-js/modules/es6.regexp.split
core-js/modules/es6.regexp.to-string
core-js/modules/es6.string.includes
core-js/modules/es6.string.iterator
core-js/modules/es6.typed.uint8-array
core-js/modules/es7.array.includes
core-js/modules/es7.promise.finally
core-js/modules/web.dom.iterable

$ npm install --save core-js

module.exports = {
  presets: [
    '@vue/app'
  ]
}

module.exports = {
  presets: [
    [
      "@vue/app", { useBuiltIns: "entry" } //entry または false
    ]
  ]
}