Module not found: Error: Can't resolve 'util' in webpack

问题

when i run the script it show me this errors Here is error:

BREAKING CHANGE:webpack < 5 used to include polyfills for node.js core modules by default. This is no longer the case. Verify if you need this module and configure a polyfill for it.

If you want to include a polyfill, you need to: add a fallback 'resolve.fallback: { "util": require.resolve("util/") }', install 'util'; If you don't want to include a polyfill, you can use an empty module like this:resolve.fallback: { "util": false } @ ./node_modules/webpack/lib/index.js 74:30-50 77:9-29 @ ./src/googlesheets.js 21:16-34 @ ./src/index.js 1:0-44 2:0-10

回答1:

The main problem is with Webpack 5. It doesn't preload the polyfill of Node.js. I see that this issue can help you. https://github.com/webpack/webpack/issues/11282

To solve it: npm install util, and add it into webpack.config.js:

module.exports = {
  // ...
  resolve: {
      fallback: {
        util: require.resolve("util/")
      }
  }
  // ...
};

回答2:

If your code is multi-target (node & browser), follow the other answers. If your code will only run on nodejs, this suffices:

    module.exports = {
     target: "node", // Or "async-node"
     mode: "production" /* or "development", or "none" */
     /* ... */
    }

回答3:

This helped me:

npm install util and then change webpack config to include:

module.exports = {
    ...
    resolve: {
        alias: {
            util: require.resolve("util/")
        }
    }
};

来源：https://stackoverflow.com/questions/64402821/module-not-found-error-cant-resolve-util-in-webpack

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Webpack