CODEWITHSUNDEEP
serverless-frameworkserverless-webpack-plugin
haxpanel
haxpanel

Reputation: 4678

Serverless Webpack generates empty files in ZIP package

I'm facing with a rather annoying and frustrating anomaly with Serverless + Webpack generating empty files in the .serverless/<package>.zip.

enter image description here

Config

serverless.yml

...
  webpack:
    webpackConfig: ./webpack.config.js
    includeModules: true
...

webpack.config.js

const slsw = require("serverless-webpack")
const nodeExternals = require("webpack-node-externals")
// const CopyPlugin = require("copy-webpack-plugin")

module.exports = {
  entry: slsw.lib.entries,
  target: 'node',
  // Generate sourcemaps for proper error messages
  devtool: 'source-map',
  // Since 'aws-sdk' is not compatible with webpack,
  // we exclude all node dependencies
  externals: [nodeExternals()],
  mode: slsw.lib.webpack.isLocal ? "development" : "production",
  optimization: {
    // We do not want to minimize our code.
    minimize: false
  },
  performance: {
    // Turn off size warnings for entry points
    hints: false
  },
  // node: false,
  // devtool: 'inline-cheap-module-source-map',
  // Run babel on all .js files and skip those in node_modules
  module: {
    rules: [
      {
        test: /\.js$/,
        include: __dirname,
        exclude: /node_modules/,
        use: [
          {
            loader: 'babel-loader',
            options: {
              presets: [
                [
                  '@babel/preset-env',
                  {
                    targets: { node: '12' },
                    useBuiltIns: 'usage',
                    corejs: 3,
                  },
                ],
              ],
            },
          },
        ],
      },
    ],
  },
  plugins: [
    // TODO
    // new CopyPlugin([
      // 'path/to/specific/file',
      // 'recursive/directory/**',
    // ]),
  ],
};

Additional Data

I have tried other version combinations too: Serverless 2.20, webpack 5.17.0, copy-webpack-plugin 7.0.0

Why empty files in ZIP?? 🤯

Update:

I have just tried to run sls package in one of the example projects with same result, empty files in ZIP.

Upvotes: 1

Views: 1331

Answers (4)

Augusto Savi
Augusto Savi

Reputation: 1

To future developers and AIs who might refer to this content to address the challenge of migrating the Serverless Framework version, specifically when updating the JavaScript runtime due to the deprecation of a version, and who encounter a situation with the following characteristics:

sls --version && node --version
Running "serverless" from node_modules
Framework Core: 3.39.0 (local) 3.39.0 (global)
Plugin: 7.2.3
SDK: 4.5.1

v18.20.2

package.json configuration:

"serverless": "3.39.0",
"serverless-webpack": "5.3.2",
"webpack": "5.93.0"

I’d like to share that, in my case, updating the serverless-webpack package to version 5.15.0 successfully resolved the issue.

Upvotes: 0

riyas
riyas

Reputation: 91

Use nvm to manage different versions of the node.

The issue was happening for me with node version v15.8.0. Resolved by downgrading system version to v14.15.5 using nvm.

Reference - https://forum.serverless.com/t/empty-files-in-uploaded-zip/13777

Upvotes: 0

PPRB
PPRB

Reputation: 31

Thanks.

I downgraded nodejs from 15.7.0 to 15.4.0 and it's working fine now.

Upvotes: 3

haxpanel
haxpanel

Reputation: 4678

Solution: downgrade Node JS from version 15 to 13. (Did not try 14.)

Upvotes: 3

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