Use region specific prebid bundles

[emma-imber]

What does this change?

Uses region specific bundles of Prebid to reduce the amount of javascript that we ship to the user.

Draft for testing

Why?

Before

Prebid chunk loaded in UK before:

After

Prebid chunk loaded in UK after:

[changeset-bot]

🦋 Changeset detected

Latest commit: bc6b9de

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 1 package

Name	Type
@guardian/commercial	Minor

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Click here if you're a maintainer who wants to add another changeset to this PR

[github-actions]

Ad load time test results

For consented, top-above-nav took on average 5030ms to load.
For consentless, top-above-nav took on average 3274ms to load.

Test conditions:

• 5mbps download speed
• 1.5mbps upload speed
• 150ms latency

[github-actions]

🚀 0.0.0-beta-20241119173822 published to npm as a beta release

To install the beta version, run one of the following commands in your project directory:

npm install @guardian/commercial@0.0.0-beta-20241119173822
pnpm add @guardian/commercial@0.0.0-beta-20241119173822
yarn add @guardian/commercial@0.0.0-beta-20241119173822

[github-actions]

🚀 0.0.0-beta-20241125125616 published to npm as a beta release

To install the beta version, run one of the following commands in your project directory:

npm install @guardian/commercial@0.0.0-beta-20241125125616
pnpm add @guardian/commercial@0.0.0-beta-20241125125616
yarn add @guardian/commercial@0.0.0-beta-20241125125616

[github-actions]

🚀 0.0.0-beta-20241205151903 published to npm as a beta release

To install the beta version, run one of the following commands in your project directory:

npm install @guardian/commercial@0.0.0-beta-20241205151903
pnpm add @guardian/commercial@0.0.0-beta-20241205151903
yarn add @guardian/commercial@0.0.0-beta-20241205151903

Not ready for review yet - still a draft!

[dskamiotis]

apologies for confusion, have tested locally just out of interest, with the pnpm run build:prod, and in my bundle-analyzer-report still getting the original size of 427kb, might I be missing a step?

[emma-imber]

apologies for confusion, have tested locally just out of interest, with the pnpm run build:prod, and in my bundle-analyzer-report still getting the original size of 427kb, might I be missing a step?

Hey Demetrios - this PR is still a draft, and not ready for review yet.

In reply to your question about the prebid size - that's because the import is behind an AB test, so the build just contains the current version of prebid. If you were to run this locally, opt in to the test, use a VPN, and then check the version of prebid getting loaded in the network tab, you would see a smaller version being imported.

[arelra]

🎉

[mchv]

@emma-imber 💎 Great job on this, looking forward for the outcome