feat: add ability to specify custom build output directory

[jzxhuang]

Adds the ability to specify a custom build output directory.

Notes:

• Thanks for your great work on this! Looking to make this change to make it usuable in a Nx monorepo I work with, where the app is built to a path that looks like dist/apps/... (per Nx recommendations)
• Tests are passing, but didn't add any new tests — I think this would require creating a completely new fixture with a different package.json. If you'd like, I can add a new test suite
• Could probably pull BUILD_OUTPUT_DIRECTORY into a file named utils.js or something 🤷

[hashicorp-cla]

All committers have signed the CLA.

[jzxhuang]

cc @jescalan thanks for creating this! Added a small PR here to support non-standard build directory.

and if you're reading this, I also [opened an issue]("license": "GPL-2.0",) to add a LICENSE file to the repo root. Cheers 😄

[jescalan]

Hey sorry for the slow response here -- if you could add a test for this, that would be really wonderful 🙏

[jzxhuang]

@jescalan no worries, added a test! I had to rejig the fixtures setup to do so, making each "fixture" its own folder and updated the test script to iterate through them accordingly.

The new fixture custom-output-directory is a copy of the existing fixture, except that we output the next build to /dist in next.config.js and specify this accordingly in nextBundleAnalysis of package.json

[jescalan]

@jzxhuang this looks really great, thank you so much for this huge contribution!

@brkalow would you be able to take a quick look at this, maybe run the tests locally and merge? I lost access since I don't work at hashicorp anymore 😭

[brkalow]

So sorry we missed this, thanks for adding this it looks great!

[jzxhuang]

thanks @brkalow! Would you also be able to:

• publish this version
• Consider adding a LICENSE.md file (add (open source) license #15)

ty 😇

[brkalow]

Published, thanks for your patience! https://github.com/hashicorp/nextjs-bundle-analysis/releases/tag/0.4.0