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When context is used in the webpack config, handlers arent found #418

jdbevan opened this issue Jun 28, 2018 · 1 comment

When context is used in the webpack config, handlers arent found #418

jdbevan opened this issue Jun 28, 2018 · 1 comment


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@jdbevan jdbevan commented Jun 28, 2018

This is a Bug Report


For bug reports:

  • What went wrong?
    I had a context path defined in my webpack config. serverless-webpack therefore didn't find the relevant files for the handlers because it uses the serverless.config.servicePath

  • What did you expect should have happened?
    It should have found my files, or told me where it was looking for them

  • What was the config you used?

service: jons-service

  name: aws
  runtime: nodejs4.3
  memorySize: 128
  timeout: 60
  stage: dev
  region: us-west-2

  - serverless-webpack

    packager: yarn
        - aws-sdk

    handler: modules/foo-bar.doSomething


const webpack = require('webpack');
const UglifyJsPlugin = require('uglifyjs-webpack-plugin');
const slsw = require('serverless-webpack');

const entry = Object.keys(slsw.lib.entries).reduce((acc, path) => {
    return {
        [path]: ['babel-polyfill'].concat(acc[path])
}, slsw.lib.entries);

const config = {
    context: __dirname + "/app"
    target: "node",
    mode: 'production',
    externals: ['aws-sdk'],
    module: {
        rules: [
                test: /\.js$/,
                exclude: /node_modules/,
                use: [{
                    loader: 'babel-loader',
                    options: {
                        presets: [["env", {
                            "targets": {
                                "node": "4.3"

    optimization: {
        minimizer: [
            new UglifyJsPlugin({
                parallel: true,
                uglifyOptions: {
                    mangle: false

    plugins: [
        new webpack.NoEmitOnErrorsPlugin(),
        new webpack.DefinePlugin({
            'process.env.NODE_ENV': 'production'

module.exports = config;
  • What stacktrace or error message from your provider did you see?
    No matching handler found for 'modules/foo-bar'. Check your service definition.

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):

Additional Data

  • Serverless-Webpack Version you're using: 5.1.5
  • Webpack version you're using: 4.12.1
  • Serverless Framework Version you're using: 1.27.3
  • Operating System: macOS Sierra 10.12.6
  • Stack Trace (if available):
@HyperBrain HyperBrain added this to the 5.2.0 milestone Jun 28, 2018
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@HyperBrain HyperBrain commented Jun 28, 2018

Hi @jdbevan , good catch 👍

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