Serverless-webpack: Terser Error when importing mongoose

Created on 6 Aug 2019 · 3Comments · Source: serverless-heaven/serverless-webpack

This is a (Bug Report / Feature Proposal)

Bug Report

Description

Steps to reproduce:

create new ts sls project: serverless create --template aws-nodejs-typescript && npm install
install mongoose
import mongoose and use it somewhere in your code

For bug reports:

What went wrong?
Can not bundle the serverless functions with webpack. It turns out that mongoose is most probably the problem, as soon as I import it, an error happens during bundling. The error is undefined, so not very helpful for debugging.
What did you expect should have happened?
Bundle everything without an error
What was the config you used?

const path = require("path");
const slsw = require("serverless-webpack");

module.exports = {
  mode: slsw.lib.webpack.isLocal ? "development" : "production",
  entry: slsw.lib.entries,
  devtool: "source-map",
  resolve: {
    extensions: [".js", ".jsx", ".json", ".ts", ".tsx"],
    alias: {
      "~": path.resolve(__dirname, "src")
    }
  },
  output: {
    libraryTarget: "commonjs",
    path: path.join(__dirname, ".webpack"),
    filename: "[name].js"
  },
  target: "node",
  module: {
    rules: [
      // all files with a `.ts` or `.tsx` extension will be handled by `ts-loader`
      { test: /\.tsx?$/, loader: "ts-loader" }
    ]
  }
};

What stacktrace or error message from your provider did you see?

WARNING in ./node_modules/express/lib/view.js 81:13-25
Critical dependency: the request of a dependency is an expression
 @ ./node_modules/express/lib/application.js
 @ ./node_modules/express/lib/express.js
 @ ./node_modules/express/index.js
 @ ./src/index.ts

WARNING in ./node_modules/mongoose/lib/index.js 11:28-64
Critical dependency: the request of a dependency is an expression
 @ ./node_modules/mongoose/index.js
 @ ./src/rest/routes/index.ts
 @ ./src/index.ts

WARNING in ./node_modules/require_optional/index.js 82:18-42
Critical dependency: the request of a dependency is an expression
 @ ./node_modules/mongodb-core/index.js
 @ ./node_modules/mongoose/lib/connection.js
 @ ./node_modules/mongoose/lib sync ^.*\/connection$
 @ ./node_modules/mongoose/lib/index.js
 @ ./node_modules/mongoose/index.js
 @ ./src/rest/routes/index.ts
 @ ./src/index.ts

WARNING in ./node_modules/require_optional/index.js 90:20-44
Critical dependency: the request of a dependency is an expression
 @ ./node_modules/mongodb-core/index.js
 @ ./node_modules/mongoose/lib/connection.js
 @ ./node_modules/mongoose/lib sync ^.*\/connection$
 @ ./node_modules/mongoose/lib/index.js
 @ ./node_modules/mongoose/index.js
 @ ./src/rest/routes/index.ts
 @ ./src/index.ts

WARNING in ./node_modules/require_optional/index.js 97:35-67
Critical dependency: the request of a dependency is an expression
 @ ./node_modules/mongodb-core/index.js
 @ ./node_modules/mongoose/lib/connection.js
 @ ./node_modules/mongoose/lib sync ^.*\/connection$
 @ ./node_modules/mongoose/lib/index.js
 @ ./node_modules/mongoose/index.js
 @ ./src/rest/routes/index.ts
 @ ./src/index.ts

ERROR in src/index.js from Terser
undefined

  Error --------------------------------------------------

  Webpack compilation error, see above

     For debugging logs, run again after setting the "SLS_DEBUG=*" environment variable.

  Stack Trace --------------------------------------------

Error: Webpack compilation error, see above
    at _.forEach.compileStats (/home/timo/dev/mms/mss_serverlessbackend/node_modules/serverless-webpack/lib/compile.js:38:19)
    at arrayEach (/home/timo/dev/mms/mss_serverlessbackend/node_modules/lodash/lodash.js:516:11)
    at Function.forEach (/home/timo/dev/mms/mss_serverlessbackend/node_modules/lodash/lodash.js:9342:14)
    at BbPromise.fromCallback.then.stats (/home/timo/dev/mms/mss_serverlessbackend/node_modules/serverless-webpack/lib/compile.js:31:11)
    at finalCallback (/home/timo/dev/mms/mss_serverlessbackend/node_modules/webpack/lib/Compiler.js:257:39)
    at hooks.done.callAsync.err (/home/timo/dev/mms/mss_serverlessbackend/node_modules/webpack/lib/Compiler.js:273:13)
    at AsyncSeriesHook.eval [as callAsync] (eval at create (/home/timo/dev/mms/mss_serverlessbackend/node_modules/tapable/lib/HookCodeFactory.js:33:10), <anonymous>:6:1)
    at AsyncSeriesHook.lazyCompileHook (/home/timo/dev/mms/mss_serverlessbackend/node_modules/tapable/lib/Hook.js:154:20)
    at onCompiled (/home/timo/dev/mms/mss_serverlessbackend/node_modules/webpack/lib/Compiler.js:271:21)
    at hooks.afterCompile.callAsync.err (/home/timo/dev/mms/mss_serverlessbackend/node_modules/webpack/lib/Compiler.js:671:15)
    at _err0 (eval at create (/home/timo/dev/mms/mss_serverlessbackend/node_modules/tapable/lib/HookCodeFactory.js:33:10), <anonymous>:11:1)
    at /home/timo/dev/mms/mss_serverlessbackend/node_modules/ts-loader/dist/after-compile.js:28:9
    at AsyncSeriesHook.eval [as callAsync] (eval at create (/home/timo/dev/mms/mss_serverlessbackend/node_modules/tapable/lib/HookCodeFactory.js:33:10), <anonymous>:7:1)
    at AsyncSeriesHook.lazyCompileHook (/home/timo/dev/mms/mss_serverlessbackend/node_modules/tapable/lib/Hook.js:154:20)
    at compilation.seal.err (/home/timo/dev/mms/mss_serverlessbackend/node_modules/webpack/lib/Compiler.js:668:31)
    at AsyncSeriesHook.eval [as callAsync] (eval at create (/home/timo/dev/mms/mss_serverlessbackend/node_modules/tapable/lib/HookCodeFactory.js:33:10), <anonymous>:6:1)
    at AsyncSeriesHook.lazyCompileHook (/home/timo/dev/mms/mss_serverlessbackend/node_modules/tapable/lib/Hook.js:154:20)
    at hooks.optimizeAssets.callAsync.err (/home/timo/dev/mms/mss_serverlessbackend/node_modules/webpack/lib/Compilation.js:1385:35)
    at AsyncSeriesHook.eval [as callAsync] (eval at create (/home/timo/dev/mms/mss_serverlessbackend/node_modules/tapable/lib/HookCodeFactory.js:33:10), <anonymous>:6:1)
    at AsyncSeriesHook.lazyCompileHook (/home/timo/dev/mms/mss_serverlessbackend/node_modules/tapable/lib/Hook.js:154:20)
    at hooks.optimizeChunkAssets.callAsync.err (/home/timo/dev/mms/mss_serverlessbackend/node_modules/webpack/lib/Compilation.js:1376:32)
    at _err0 (eval at create (/home/timo/dev/mms/mss_serverlessbackend/node_modules/tapable/lib/HookCodeFactory.js:33:10), <anonymous>:11:1)
    at taskRunner.run (/home/timo/dev/mms/mss_serverlessbackend/node_modules/terser-webpack-plugin/dist/index.js:321:9)
    at step (/home/timo/dev/mms/mss_serverlessbackend/node_modules/terser-webpack-plugin/dist/TaskRunner.js:87:9)
    at done (/home/timo/dev/mms/mss_serverlessbackend/node_modules/terser-webpack-plugin/dist/TaskRunner.js:98:30)
    at boundWorkers (/home/timo/dev/mms/mss_serverlessbackend/node_modules/terser-webpack-plugin/dist/TaskRunner.js:103:13)
    at /home/timo/dev/mms/mss_serverlessbackend/node_modules/worker-farm/lib/farm.js:199:19
    at process._tickCallback (internal/process/next_tick.js:61:11)
From previous event:
    at PluginManager.invoke (/usr/lib/node_modules/serverless/lib/classes/PluginManager.js:446:22)
    at PluginManager.spawn (/usr/lib/node_modules/serverless/lib/classes/PluginManager.js:464:17)
    at ServerlessWebpack.BbPromise.bind.then.then (/home/timo/dev/mms/mss_serverlessbackend/node_modules/serverless-webpack/index.js:101:51)
    at runCallback (timers.js:705:18)
    at tryOnImmediate (timers.js:676:5)
    at processImmediate (timers.js:658:5)
    at process.topLevelDomainCallback (domain.js:126:23)

For feature proposals:

What is the use case that should be solved. The more detail you describe this in the easier it is to understand for us.
If there is additional config how would it look

Similar or dependent issue(s):

#12345

Additional Data

Serverless-Webpack Version you're using: 5.2.0
Webpack version you're using: 4.29.0
Serverless Framework Version you're using: 1.45.1
Operating System: Ubuntu 18.04
Stack Trace (if available):

Source

timoangerer

Most helpful comment

A workaround for the error is to add the following to your webpack.config.js

optimization: {
    minimize: false
}

This will prevent Terser from trying to minify your code

timoangerer on 6 Aug 2019

🎉2 👍2

All 3 comments

A workaround for the error is to add the following to your webpack.config.js

optimization: {
    minimize: false
}

This will prevent Terser from trying to minify your code

timoangerer on 6 Aug 2019

🎉2 👍2

I'm getting a similar issue when deploying with serverless in our bitbucket pipeline using docker image node:10.15.3. I also have mongoose installed. Although it previously had not been an issue, and we have not changed any package versions.

```+ serverless deploy -s $STAGE_NAME