chore: add new question index to id map

[lucasheriques]

Changes

add a new map from question index to its ID to help build queries from just the survey event, without relying on hardcoded ids

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!)

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Name	Status	Preview	Updated (UTC)
posthog-js	✅ Ready (Inspect)	Visit Preview	Mar 13, 2025 4:50am

[greptile-apps]

PR Summary

Added functionality to map survey question indices to their IDs in survey events, enabling query building without hardcoded IDs while maintaining backwards compatibility.

• Added getSurveyIndexToIdMap function in /src/extensions/surveys/surveys-utils.tsx to create index-to-ID mappings
• Integrated new $survey_question_index_to_id property in survey event payloads
• Added comprehensive tests in /playwright/surveys/response-capture.spec.ts and /playwright/surveys/question-types.spec.ts covering various survey types
• Implemented skip handling for questions without IDs in the mapping logic

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[github-actions]

Size Change: +259 B (+0.01%)

Total Size: 3.57 MB

Filename	Size	Change
dist/all-external-dependencies.js	220 kB	+33 B (+0.02%)
dist/array.full.es5.js	274 kB	+28 B (+0.01%)
dist/array.full.js	377 kB	+33 B (+0.01%)
dist/array.full.no-external.js	376 kB	+33 B (+0.01%)
dist/module.full.js	377 kB	+33 B (+0.01%)
dist/module.full.no-external.js	376 kB	+33 B (+0.01%)
dist/surveys-preview.js	71.3 kB	+33 B (+0.05%)
dist/surveys.js	76 kB	+33 B (+0.04%)

ℹ️ View Unchanged

Filename	Size
dist/array.js	185 kB
dist/array.no-external.js	184 kB
dist/customizations.full.js	14 kB
dist/dead-clicks-autocapture.js	14.5 kB
dist/exception-autocapture.js	9.94 kB
dist/external-scripts-loader.js	2.75 kB
dist/main.js	186 kB
dist/module.js	185 kB
dist/module.no-external.js	184 kB
dist/posthog-recorder.js	212 kB
dist/recorder-v2.js	115 kB
dist/recorder.js	115 kB
dist/tracing-headers.js	1.76 kB
dist/web-vitals.js	10.4 kB

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[lucasheriques]

@marandaneto @ioannisj confirmed with product analytics team, $survey_questions should be safe to change, so using it now to storing the questions. works fine with shuffle questions too