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

报错：

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

　　

配置

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

　　

修改后

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

 

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

　　

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