php - symfony/encore @babel/preset-env 设置 corejs 的正确方法

Question

@babel/preset-env更新到版本后7.4.2出现错误：

WARNING: We noticed you're using the `useBuiltIns` option without declaring a core-js version. Currently, we assume version 2.x when no version is passed. Since this default version will likely change in future versions of Babel, we recommend explicitly setting the core-js version you are using via the `corejs` option.

You should also be sure that the version you pass to the `corejs` option matches the version specified in your `package.json`'s `dependencies` section. If it doesn't, you need to run one of the following commands:

npm install --save core-js@2 npm install --save core-js@3
yarn add core-js@2 yarn add core-js@3

我发现的唯一可行的解​​决方案是在我的weback.config.js

Encore.configureBabel(function(babelConfig) {
    babelConfig.presets[0][1].corejs = 2;
}, {});

但我不喜欢设置[0][1]为预设环境数组添加新属性。也许有更多建议如何以正确的方式做？

标签： phpsymfonybabeljswebpack-encore