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buildpack-sentry-sourcemaps

A Heroku buildpack built to upload sourcemaps to Sentry, as described in the Sentry docs. Designed to work with Node and JS builds during the Heroku build phase.

Usage

Define the following configuration variables within Herkou app. See Heroku Documentaiton for more informaiton.

  • SENTRY_AUTH_TOKEN: the Sentry API authentication token
  • SENTRY_ORG: the Sentry organization the project lives under
  • SENTRY_PROJECT: the Sentry project the source maps belong too

Getting Sentry Auth Token

You can get it on the API page. The token needs the project:write scope to be able to upload. The token value would be saved as the SENTRY_AUTH_TOKEN configuration variables.

Determining your Sentry organziation and project

When viewing your project within Sentry, the organization and project will be found within the URL.

https://sentry.io/<SENTRY_ORG>/<SENTRY_PROJECT>

Make sure you BUILD

When using webpack, babel, or uglifyJS, you need to build the sourcemaps before they will upload. Typically this can be done within your package.json file. Example using babel to create sourcemaps with -s option. The heroku-postbuild step runs after dependencies are downloaded, allowing you to build during the deploy. Read more about Heroku specific build steps.

Babel

// package.json

"scripts": {
  "heroku-postbuild": "mkdir -p dist && babel src -s -D -d dist",
},

Next.js (version 5.1+)

// next.config.js

module.exports = {
  webpack(config, { dev }) {
    config.devtool = 'source-map';
    for (const options of config.plugins) {
      if (options['constructor']['name'] === 'UglifyJsPlugin') {
        options.options.sourceMap = true;
        break;
      }
    }

    return config;
  },
};
// package.json

"scripts": {
  "heroku-postbuild": "next build",
},

Then add this buildpack to your app:

heroku buildpacks:add https://github.com/WebGrind/buildpack-sentry-sourcemaps

And push a new relase.

Defining the Sentry release

The buildpack will use the current git commit number via the environment variable SOURCE_VERSION to mark the Sentry release. If you have trouble setting this in you Heroku config or app, I recommend using the Heroku Buildpack Version before this buildpack.

What Changed

This is a modified version of the great work done by Schnouki found here. Things were changed to be a little more robust, and support more standard configuration variables with Sentry.

  • Envrioment Variables were changed to match the Sentry CLI Configuration variables. This allowed the buildpack to be a drop-in replacement for WebPack configs, Sentry CLI, and other methods.
  • The prefix Enviroment Variable was deprecated and now defaults to using ~ which means the full domain does not need specified. View the sentry documentation for more details on how this work.
  • The original buildpack was great, but would not dig through nested folders. Instead of looking for Source Maps in a single folder, one level deep, it looks through the entire projects directory for source maps. This creates a more universial solution to work across multiple projects. This also means that certain folders are ignored by default, include node_modules and .heroku.

I did not submit a PR for these changes because of the modification of Enviroment Variables. This means this is considered a breaking change, and can not be used as a drop-in replacement for the work Schanouki did.

License

MIT.

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