feat: hog site functions

[mariusandra]

Changes

Companion for PostHog/posthog#26169

• Always send $elements_chain as a property (there's just 1 client who's still receiving $elements)
• Send events to the function only once an app has loaded. This also sends events that would've been missed while the app is loading.
• Works with existing site apps
• Works with new site functions/destinations/etc

TODO, can be in followup PRs:

• Consent opt in/out
• Test CSS selectors and elements_chain_href type fields

Checklist

• Tests for new code (see advice on the tests we use)
• Accounted for the impact of any changes across different browsers
• Accounted for backwards compatibility of any changes (no breaking changes in posthog-js!)

[vercel]

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Name	Status	Preview	Updated (UTC)
posthog-js	✅ Ready (Inspect)	Visit Preview	Nov 26, 2024 11:27am

[github-actions]

Size Change: +19.7 kB (+0.63%)

Total Size: 3.16 MB

Filename	Size	Change
dist/all-external-dependencies.js	206 kB	+3 B (0%)
dist/array.full.es5.js	257 kB	+2.16 kB (+0.85%)
dist/array.full.js	360 kB	+1.95 kB (+0.55%)
dist/array.full.no-external.js	359 kB	+1.95 kB (+0.55%)
dist/array.js	174 kB	+1.95 kB (+1.13%)
dist/array.no-external.js	173 kB	+1.95 kB (+1.14%)
dist/dead-clicks-autocapture.js	14.3 kB	+3 B (+0.02%)
dist/main.js	175 kB	+1.95 kB (+1.13%)
dist/module.full.js	360 kB	+1.95 kB (+0.55%)
dist/module.full.no-external.js	359 kB	+1.95 kB (+0.55%)
dist/module.js	175 kB	+1.96 kB (+1.14%)
dist/module.no-external.js	173 kB	+1.95 kB (+1.14%)

ℹ️ View Unchanged

Filename	Size
dist/exception-autocapture.js	9.37 kB
dist/external-scripts-loader.js	2.29 kB
dist/recorder-v2.js	115 kB
dist/recorder.js	115 kB
dist/surveys-preview.js	57.6 kB
dist/surveys.js	63.2 kB
dist/tracing-headers.js	1.75 kB
dist/web-vitals.js	10.3 kB

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