fix(ios): Resolve getNewScreenTimeToDisplay Promise with number not array#6438
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…rray `getTimeToDisplay:` typed its block as `RCTResponseSenderBlock` (the callback convention that wraps results in an `NSArray`), but it is only invoked via the Promise-based `getNewScreenTimeToDisplay` bridge method, whose `RCTPromiseResolveBlock` expects a raw value. The Promise therefore resolved with a single-element array instead of a timestamp number. The array survived the duration arithmetic via coercion but was assigned directly as the TTID span's `timestamp`, producing a spurious `deadline_exceeded` status and an inflated duration. Retype the block to `RCTPromiseResolveBlock` and resolve with the raw timestamp (and `nil` on non-iOS instead of an empty array). Adds a native regression test asserting the resolve value is a scalar `NSNumber`. Fixes #6433 Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
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antonis
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Jul 10, 2026
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iOS (legacy) Performance metrics 🚀
|
| Revision | Plain | With Sentry | Diff |
|---|---|---|---|
| b9bebee+dirty | 3850.15 ms | 1227.51 ms | -2622.64 ms |
| 3d377b5+dirty | 1218.48 ms | 1219.51 ms | 1.03 ms |
| 1a2e7e0+dirty | 3842.49 ms | 1220.04 ms | -2622.45 ms |
| e5bb5f6+dirty | 3826.14 ms | 1212.24 ms | -2613.90 ms |
| 6acdf1d+dirty | 3844.33 ms | 1212.96 ms | -2631.38 ms |
| 41d6254+dirty | 3845.71 ms | 1224.51 ms | -2621.20 ms |
| 9210ae6+dirty | 3815.93 ms | 1214.14 ms | -2601.79 ms |
| c004dae+dirty | 3850.32 ms | 1227.79 ms | -2622.53 ms |
| 4e0b819+dirty | 3839.05 ms | 1210.75 ms | -2628.30 ms |
| 0b5120f+dirty | 3838.39 ms | 1232.91 ms | -2605.48 ms |
App size
| Revision | Plain | With Sentry | Diff |
|---|---|---|---|
| b9bebee+dirty | 5.15 MiB | 6.68 MiB | 1.53 MiB |
| 3d377b5+dirty | 3.38 MiB | 4.76 MiB | 1.38 MiB |
| 1a2e7e0+dirty | 4.98 MiB | 6.46 MiB | 1.49 MiB |
| e5bb5f6+dirty | 4.98 MiB | 6.51 MiB | 1.53 MiB |
| 6acdf1d+dirty | 4.98 MiB | 6.51 MiB | 1.53 MiB |
| 41d6254+dirty | 5.15 MiB | 6.70 MiB | 1.54 MiB |
| 9210ae6+dirty | 5.15 MiB | 6.68 MiB | 1.53 MiB |
| c004dae+dirty | 5.15 MiB | 6.67 MiB | 1.51 MiB |
| 4e0b819+dirty | 4.98 MiB | 6.46 MiB | 1.49 MiB |
| 0b5120f+dirty | 5.15 MiB | 6.68 MiB | 1.53 MiB |
Contributor
iOS (new) Performance metrics 🚀
|
| Revision | Plain | With Sentry | Diff |
|---|---|---|---|
| b0d3373+dirty | 3842.49 ms | 1218.49 ms | -2624.00 ms |
| ef27341+dirty | 3835.20 ms | 1212.23 ms | -2622.97 ms |
| e5bb5f6+dirty | 3825.74 ms | 1217.30 ms | -2608.43 ms |
| 44c8b3f+dirty | 3849.24 ms | 1209.94 ms | -2639.31 ms |
| 68672fc+dirty | 3832.22 ms | 1228.29 ms | -2603.93 ms |
| 5748023+dirty | 3844.74 ms | 1225.49 ms | -2619.26 ms |
| 6acdf1d+dirty | 3835.35 ms | 1218.30 ms | -2617.06 ms |
| 2c735cc+dirty | 1223.33 ms | 1224.38 ms | 1.04 ms |
| 100ce80+dirty | 3843.57 ms | 1226.46 ms | -2617.12 ms |
| 9210ae6+dirty | 3834.11 ms | 1216.64 ms | -2617.47 ms |
App size
| Revision | Plain | With Sentry | Diff |
|---|---|---|---|
| b0d3373+dirty | 5.15 MiB | 6.68 MiB | 1.53 MiB |
| ef27341+dirty | 5.15 MiB | 6.68 MiB | 1.53 MiB |
| e5bb5f6+dirty | 4.98 MiB | 6.51 MiB | 1.53 MiB |
| 44c8b3f+dirty | 5.15 MiB | 6.66 MiB | 1.51 MiB |
| 68672fc+dirty | 5.15 MiB | 6.71 MiB | 1.55 MiB |
| 5748023+dirty | 5.15 MiB | 6.68 MiB | 1.53 MiB |
| 6acdf1d+dirty | 4.98 MiB | 6.51 MiB | 1.53 MiB |
| 2c735cc+dirty | 3.38 MiB | 4.74 MiB | 1.35 MiB |
| 100ce80+dirty | 5.15 MiB | 6.67 MiB | 1.51 MiB |
| 9210ae6+dirty | 5.15 MiB | 6.68 MiB | 1.53 MiB |
antonis
marked this pull request as ready for review
July 10, 2026 10:58
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📢 Type of change
📜 Description
.h+.msignature + ivar) toRCTPromiseResolveBlock.@(currentTime)instead of@[ @(currentTime) ].nilinstead of an empty array@[]on the non-iOS (#else) branch.NSNumber, never an array.💡 Motivation and Context
Fixes #6433
💚 How did you test it?
testGetTimeToDisplayResolvesWithNumberNotArraytoRNSentryTimeToDisplayTests.swift. Verified it fails against the previous array-resolving behavior and passes with the fix.RNSentryTimeToDisplayTestssuite (4/4 pass).sentryeventemitterfallback,reactnavigation.ttid,timeToDisplayintegration) — 32/32 pass. No JS changes were required; consumers already expect a scalar per the declaredPromise<number | undefined | null>type.📝 Checklist
sendDefaultPIIis enabled.🔮 Next steps