Gatsby build fails on netlify but can't reproduce locally - more examples of wepback config customization?

[renschler]

Description

I have a simple gatsby-starter-hello-world repo that builds fine locally but fails to build with Netlify during the static HTML build stage.

The fail is related to the paper module which I installed with NPM. Interestingly, the bug first surfaced when I pushed a more complex gatsby site to netlify, and the import statement was within a client-only-route. This was confusing to me because I didn't think client-only-routes were touched during the static html build stage.

I found this paperjs issue & solution https://github.com/paperjs/paper.js/issues/1483#issuecomment-429673360 and I think if I can successfully change the webpack config settings like they did in that solution, I will be able to get things to build (maybe... I'm still not sure why things are fine locally but don't work in netlify).

I created a basic example repo (without client only routes) to isolate the issue, and then started going through this help documentation on debugging html builds.

I tried various things with gatsby-node.js, but every time I went to build locally it failed..

exports.onCreateWebpackConfig = ({ stage, loaders, actions }) => { if (stage === "build-html") { actions.setWebpackConfig({ module: { rules: [ { test: /bad-module/, use: loaders.null(), }, ], }, }) } }

I am new to webpack config, so it wasn't clear what I needed to replace the/bad-module/ regex with. I tried a few things, but the build kept failing locally with my changes.

Are there more webpack config customization examples?

Also, I've reviewed existing netlify build issues and it does not seem to be related to those: https://github.com/gatsbyjs/gatsby/issues/13194 https://github.com/gatsbyjs/gatsby/issues/10362 https://github.com/gatsbyjs/gatsby/issues/4989 https://github.com/gatsbyjs/gatsby/issues/6138

Steps to reproduce

Clone repo above, when you push it to netlify the build will fail (same node version). Gatsby build & serve works fine locally.

Expected result

The build should not fail in Netlify. It's not clear why it fails there and not locally.

System: OS: macOS Sierra 10.12.6 CPU: (4) x64 Intel(R) Core(TM) i7-4578U CPU @ 3.00GHz Shell: 3.2.57 - /bin/bash Binaries: Node: 10.13.0 - /usr/local/bin/node Yarn: 1.13.0 - /usr/local/bin/yarn npm: 6.9.0 - /usr/local/bin/npm Languages: Python: 2.7.13 - /Users/Patrick/anaconda2/bin/python Browsers: Chrome: 73.0.3683.86 Firefox: 64.0.2 Safari: 12.0.3 npmPackages: gatsby: ^2.3.5 => 2.3.5 npmGlobalPackages: gatsby-cli: 2.4.14 gatsby: 2.2.11

[renschler]

I ended up adding /node_modules\/paper/ to the rule test above, and things built successfully on netlify!

Still confused though about why it would work locally but not on netlify (also why it wouldn't work on netlify even within a client only route component), so if anyone has any thoughts on that would love to hear them.

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[emmaqbrown]

@renschler Hey! I'm having this issue and I'm a little confused how you fixed it. Where did you put /node_modules\/paper/?

[cyruskorn]

Hey @emmaqbrown, adding the following code to gatsby-node.js should fix the issue:

exports.onCreateWebpackConfig = ({ stage, loaders, actions }) => {
  if (stage === "build-html") {
    actions.setWebpackConfig({
      module: { rules: [{ test: /node_modules\/paper/, use: loaders.null() }] },
    })
  }
}

[blimpmason]

I'm having the same issue locally when running gatsby develop despite including the webpack config snippet in my gatsby-node.js:

exports.onCreateWebpackConfig = ({ stage, loaders, actions }) => {
  if (stage === "build-html") {
    actions.setWebpackConfig({
      module: { rules: [{ test: /node_modules\/paper/, use: loaders.null() }] },
    })
  }
}

[davidgodzsak]

I am having the same issue as @blimpmason did you find a way to get around it?

[blimpmason]

I am having the same issue as @blimpmason did you find a way to get around it?

@davidgodzsak no sorry I never found a workaround!