Error: Cannot call .tap() on a plugin that has not yet been defined. Call plugin('html').use(<Plugin>) first.

报错：

Error: Cannot call .tap() on a plugin that has not yet been defined. Call plugin('html').use(<Plugin>) first.

　　

配置

if (isProd) {
      config
        .plugin("html")
        .tap((args) => {
          args[0].cdn = assetsCDN.assets;
          return args;
        });
    }

　　

修改后

const HtmlWebpackPlugin = require("html-webpack-plugin");

 

if (isProd) {
      config
        .plugin("html")
        .use(HtmlWebpackPlugin)
        .tap((args) => {
          args.cdn = assetsCDN.assets;
          return args;
        });
    }

　　

args[0].cdn = assetsCDN.assets; // 报错：TypeError: Cannot set property 'cdn' of undefined