Remove react-day-picker

[tjmw]

What are you doing in this PR?

Remove react-day-picker NPM package and replace with our own implementation. and the method which uses it (it's no longer needed, as it was only ever used for Digipack Gift subs which we no longer support).

Trello Card

Why are you doing this?

The version of react-day-picker we're on is 5 years old, and the interface has changed. The only code paths which use it are no longer needed.

How to test

I took this approach:

1. Make the existing method (which does use react-day-picker) testable, by allowing passing in now
2. Add some tests
3. Update the method, removing react-day-picker and ensure tests still pass

How can we measure success?

Have we considered potential risks?

Accessibility test checklist

• Tested with screen reader
• Navigable with keyboard
• Colour contrast passed
• The change doesn't use only colour to convey meaning

Screenshots

[github-actions]

Deploy build 12797 of support::stripe-patrons-data to CODE

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• Deploy parts of build 12797 to CODE by previewing it first
• What's on CODE right now?

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From guardian/actions-riff-raff.

[github-actions]

Size Change: -53.9 kB (-2.41%)

Total Size: 2.19 MB

Filename	Size	Change
./public/compiled-assets/javascripts/[countryGroupId]/router.js	258 kB	-8.55 kB (-3.21%)
./public/compiled-assets/javascripts/digitalSubscriptionLandingPage.js	227 kB	-9.54 kB (-4.03%)
./public/compiled-assets/javascripts/paperSubscriptionCheckoutPage.js	166 kB	-9.05 kB (-5.17%)	✅
./public/compiled-assets/javascripts/subscriptionsRedemptionPage.js	118 kB	-8.74 kB (-6.89%)	✅
./public/compiled-assets/javascripts/supporterPlusLandingPage.js	299 kB	-9.04 kB (-2.93%)
./public/compiled-assets/javascripts/weeklySubscriptionCheckoutPage.js	163 kB	-8.98 kB (-5.23%)	✅

ℹ️ View Unchanged

Filename	Size
./public/compiled-assets/javascripts/[countryGroupId]/events/router.js	90.1 kB
./public/compiled-assets/javascripts/ausMomentMap.js	108 kB
./public/compiled-assets/javascripts/contributionsRedirectStyles.js	20 B
./public/compiled-assets/javascripts/downForMaintenancePage.js	70.7 kB
./public/compiled-assets/javascripts/error404Page.js	70.7 kB
./public/compiled-assets/javascripts/error500Page.js	70.6 kB
./public/compiled-assets/javascripts/favicons.js	617 B
./public/compiled-assets/javascripts/paperSubscriptionLandingPage.js	87.5 kB
./public/compiled-assets/javascripts/payPalErrorPage.js	69 kB
./public/compiled-assets/javascripts/payPalErrorPageStyles.js	20 B
./public/compiled-assets/javascripts/promotionTerms.js	73.6 kB
./public/compiled-assets/javascripts/subscriptionsLandingPage.js	72.9 kB
./public/compiled-assets/javascripts/unsupportedBrowserStyles.js	20 B
./public/compiled-assets/javascripts/weeklySubscriptionLandingPage.js	87.7 kB
./public/compiled-assets/webpack/136.js	2.17 kB
./public/compiled-assets/webpack/187.js	21.6 kB
./public/compiled-assets/webpack/344.js	2.01 kB
./public/compiled-assets/webpack/643.js	22.4 kB
./public/compiled-assets/webpack/706.js	107 kB

_{compressed-size-action}

[github-actions]

Deploy build 22061 of support:support-workers-mono to CODE

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• Deploy build 22061 of support:support-workers-mono to CODE
• Deploy parts of build 22061 to CODE by previewing it first
• What's on CODE right now?

---

From guardian/actions-riff-raff.

[andrewHEguardian]

Looks good to me!

[rupertbates]

Good idea

[andrewHEguardian]

Even better

[prout-bot]

Seen on PROD (merged by @tjmw 10 minutes and 45 seconds ago)

• Keep an eye out for the post deployment Playwright smoke tests github action
• If the tests have failed, the post deployment test runbook should help troubleshoot.

Sentry Release: support-client-side, support