使用webpage的HardSourceWebpackPlugin插件后出现此错误。

见：

• Could not freeze ...: Cannot read property 'hash' of undefined 解决办法
• Could not freeze .file name..: Cannot read property 'hash' of undefined
• TypeError: Cannot read property 'hash' of undefined

我也遇到了这个问题， 使用了以下方案解决了 ：

// vue.config.js
new HardSourceWebpackPlugin.ExcludeModulePlugin([
    {
        // HardSource works with mini-css-extract-plugin but due to how
        // mini-css emits assets, assets are not emitted on repeated builds with
        // mini-css and hard-source together. Ignoring the mini-css loader
        // modules, but not the other css loader modules, excludes the modules
        // that mini-css needs rebuilt to output assets every time.
        test: /mini-css-extract-plugin[\\/]dist[\\/]loader/
    }
]),