Add event delegation for form tracking

[jethron]

• Global event listeners are now used instead of per-element listeners
• Event listeners now use the capture phase instead of bubble
• Forms added after the initial enableFormTracking call should automatically be tracked without needing additional calls
• Field value transform functions can now return null for all events
• Add unit tests for form tracking
• The new targets parameter allows listening for forms in only a subset of the document tree, or across multiple same-origin documents (e.g. iframes)

PE-5793 PE-6528 #to-review

[bundlemon[bot]]

BundleMon

Files added (6)

Status | Path | Size | Limits :------------: | ------------ | :------------: | :------------: :white_check_mark: | libraries/browser-tracker-core/dist/index.mod
ule.js
| +27.33KB | 28KB / +10% :x: | trackers/javascript-tracker/dist/sp.js
| **+26.32KB** | 25.5KB / +10% :white_check_mark: | trackers/javascript-tracker/dist/sp.lite.js
| +15.45KB | 16KB / +10% :white_check_mark: | trackers/browser-tracker/dist/index.umd.min.j
s
| +15.31KB | 16KB / +10% :white_check_mark: | libraries/tracker-core/dist/index.module.js
| +13.46KB | 15KB / +10% :white_check_mark: | trackers/browser-tracker/dist/index.module.js
| +3.49KB | 5KB / +10%

Total files change +101.35KB 0%

Final result: :x:

View report in BundleMon website ➡️

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Current branch size history