Helper _objectSpread is not imported when using transform runtime with helpers

[csvn]

Bug Report

Current Behavior
A __objectSpread function is created locally, and not imported, with @babel/plugin-transform-runtime and helpers: true.

import _defineProperty from "@babel/runtime/helpers/esm/defineProperty";

function ownKeys(object, enumerableOnly) { var keys = Object.keys(object); if (Object.getOwnPropertySymbols) { var symbols = Object.getOwnPropertySymbols(object); if (enumerableOnly) symbols = symbols.filter(function (sym) { return Object.getOwnPropertyDescriptor(object, sym).enumerable; }); keys.push.apply(keys, symbols); } return keys; }

function _objectSpread(target) { for (var i = 1; i < arguments.length; i++) { var source = arguments[i] != null ? arguments[i] : {}; if (i % 2) { ownKeys(source, true).forEach(function (key) { _defineProperty(target, key, source[key]); }); } else if (Object.getOwnPropertyDescriptors) { Object.defineProperties(target, Object.getOwnPropertyDescriptors(source)); } else { ownKeys(source).forEach(function (key) { Object.defineProperty(target, key, Object.getOwnPropertyDescriptor(source, key)); }); } } return target; }

var a = {
  foo: '1'
};

var b = _objectSpread({}, a, {
  bar: '2'
});

console.log(b);

Input Code

• REPL or Repo link if applicable:
  https://github.com/csvn/object-spread-helper-issue-reproduction

const a = { foo: '1' };
const b = { ...a, bar: '2' };
console.log(b);

Expected behavior/code
__objectSpread should be imported when using @babel/plugin-transform-runtime and helpers: true.

import _objectSpread from "@babel/runtime/helpers/esm/objectSpread";

var a = {
  foo: '1'
};

var b = _objectSpread({}, a, {
  bar: '2'
});

console.log(b);

Babel Configuration (.babelrc, package.json, cli command)

// babel.config.js
module.exports = {
  presets: [
    ['@babel/preset-env', {
      targets: 'IE 11',
      modules: false
    }]
  ],
  plugins: [
    ['@babel/plugin-transform-runtime', {
      helpers: true,
      useESModules: true
    }]
  ]
};

{
  "scripts": {
    "start": "babel src --out-dir dist"
  },
  "private": true,
  "license": "UNLICENSED",
  "dependencies": {
    "@babel/runtime": "^7.5.5"
  },
  "devDependencies": {
    "@babel/cli": "^7.5.5",
    "@babel/core": "^7.5.5",
    "@babel/plugin-transform-runtime": "^7.5.5",
    "@babel/preset-env": "^7.5.5"
  }
}

npm run start
# or
npx babel src--out-dir dist

Environment

• Babel version(s): 7.5.5
• Node/npm version: 12.3.1 / 6.9.0
• OS: Windows 10
• Monorepo: no
• How you are using Babel: cli

Possible Solution

Additional context/Screenshots
The reproduction is a trimmed down version of our project, that is using Webpack. I noticed when creating a minimal reproduction project that the issue can be seen by simply using the @babel/cli.

[babel-bot]

Hey @csvn! We really appreciate you taking the time to report an issue. The collaborators on this project attempt to help as many people as possible, but we're a limited number of volunteers, so it's possible this won't be addressed swiftly.

If you need any help, or just have general Babel or JavaScript questions, we have a vibrant Slack community that typically always has someone willing to help. You can sign-up here for an invite.

[csvn]

Wow, sorry! I found #10261 just after I created this issue. I couldn't find it when I searched earlier on google, so I missed it.