feat: push replay and person data to intercom and crisp chat

[pauldambra]

replaces #1980

easier to recreate than fangle the merge

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if you've got intercom or crisp chat on your site, you might want to auto-link session replay to user interactions

you can do this manually but it might be nice to make it easy for folk

crisp

intercom

[vercel]

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Name	Status	Preview	Updated (UTC)
posthog-js	✅ Ready (Inspect)	Visit Preview	Jun 25, 2025 11:50am

[greptile-apps]

PR Summary

Adds integration support for Intercom and Crisp Chat to automatically link PostHog session replays and person data with chat conversations.

• New external integration system in packages/browser/src/extensions/external-integration.ts manages dynamic loading and lifecycle of chat integrations
• Security concerns in packages/browser/playground/nextjs/pages/external_chat.tsx with hardcoded API keys/IDs and script loading approach
• Extended type system in packages/browser/src/types.ts with new ExternalIntegrationKind and config options for integration management
• Implementation in packages/browser/src/entrypoints/intercom-integration.ts and crisp-chat-integration.ts tracks session IDs to prevent duplicate updates
• CSP updates in packages/browser/playground/nextjs/pages/_app.tsx to allow connections to third-party chat services

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[github-actions]

Download bundle size visualization

[github-actions]

Size Change: +10.7 kB (+0.3%)

Total Size: 3.58 MB

Filename	Size	Change
packages/browser/dist/array.full.es5.js	308 kB	+1.9 kB (+0.62%)
packages/browser/dist/array.full.js	372 kB	+971 B (+0.26%)
packages/browser/dist/array.full.no-external.js	389 kB	+989 B (+0.25%)
packages/browser/dist/array.js	171 kB	+963 B (+0.56%)
packages/browser/dist/array.no-external.js	186 kB	+983 B (+0.53%)
packages/browser/dist/main.js	173 kB	+963 B (+0.56%)
packages/browser/dist/module.full.js	372 kB	+971 B (+0.26%)
packages/browser/dist/module.full.no-external.js	389 kB	+989 B (+0.25%)
packages/browser/dist/module.js	172 kB	+963 B (+0.56%)
packages/browser/dist/module.no-external.js	187 kB	+983 B (+0.53%)

ℹ️ View Unchanged

Filename	Size
packages/browser/dist/all-external-dependencies.js	220 kB
packages/browser/dist/crisp-chat-integration.js	1.97 kB
packages/browser/dist/customizations.full.js	15.9 kB
packages/browser/dist/dead-clicks-autocapture.js	12.6 kB
packages/browser/dist/exception-autocapture.js	9.55 kB
packages/browser/dist/external-scripts-loader.js	2.57 kB
packages/browser/dist/intercom-integration.js	2.02 kB
packages/browser/dist/posthog-recorder.js	207 kB
packages/browser/dist/recorder-v2.js	113 kB
packages/browser/dist/recorder.js	113 kB
packages/browser/dist/surveys-preview.js	70.7 kB
packages/browser/dist/surveys.js	78.8 kB
packages/browser/dist/tracing-headers.js	1.63 kB
packages/browser/dist/web-vitals.js	10.4 kB

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