metamask-extension add 'asset picker opened' and 'asset selected' tracking for bridge events

Description

Changelog

CHANGELOG entry:

Related issues

Fixes:

Manual testing steps

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Screenshots/Recordings

Before

After

Pre-merge author checklist

[ ] I've followed MetaMask Contributor Docs and MetaMask Extension Coding Standards.
[ ] I've completed the PR template to the best of my ability
[ ] I’ve included tests if applicable
[ ] I’ve documented my code using JSDoc format if applicable
[ ] I’ve applied the right labels on the PR (see labeling guidelines). Not required for external contributors.

Pre-merge reviewer checklist

[ ] I've manually tested the PR (e.g. pull and build branch, run the app, test code being changed).
[ ] I confirm that this PR addresses all acceptance criteria described in the ticket it closes and includes the necessary testing evidence such as recordings and or screenshots.

Dec 10 '25 02:12 ghgoodreau

CLA Signature Action: All authors have signed the CLA. You may need to manually re-run the blocking PR check if it doesn't pass in a few minutes.

Dec 10 '25 02:12 github-actions[bot]

✨ Files requiring CODEOWNER review ✨

🔄 @MetaMask/swaps-engineers (2 files, +91 -23)

📁 ui/
- 📁 pages/
  - 📁 bridge/
    - 📁 prepare/
      - 📄 bridge-input-group.tsx +29 -23
      - 📄 prepare-bridge-page.tsx +62 -0

Dec 10 '25 03:12 metamaskbot

Builds ready [74c7b31]

builds: chrome, firefox
builds (beta): chrome, firefox
builds (flask): chrome, firefox
builds (test): chrome, firefox
builds (test-flask): chrome, firefox
bundle size: Bundle Size Stats
user-actions-benchmark: User Actions Stats
storybook: Storybook
typescript migration: Dashboard
all artifacts
bundle viz:
- background: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9
- common: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15
- ui: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18
- content-script: 0
- offscreen: 0

UI Startup Metrics (1231 ± 106 ms)

Platform	BuildType	Page	Metric	Mean (ms)	Min (ms)	Max (ms)	Std Dev (ms)	P 75 (ms)	P 95 (ms)
Chrome	Browserify	Standard Home	uiStartup	1231	1013	1548	106	1303	1399
			load	1009	843	1241	85	1052	1170
			domContentLoaded	1004	837	1237	85	1048	1163
			domInteractive	26	15	135	22	21	88
			firstPaint	542	93	1178	395	1007	1148
			backgroundConnect	210	190	256	10	213	230
			firstReactRender	39	30	71	8	41	60
			getState	38	17	150	22	40	89
			initialActions	1	0	2	1	1	1
			loadScripts	800	640	984	81	844	954
			setupStore	10	7	24	3	11	18
			numNetworkReqs	13	6	86	20	6	71
	Browserify	Power User Home	uiStartup	1893	1587	2573	167	1965	2147
			load	1057	870	1547	132	1153	1271
			domContentLoaded	1048	865	1536	131	1147	1263
			domInteractive	31	16	206	30	24	96
			firstPaint	584	93	1555	428	1019	1258
			backgroundConnect	243	191	667	94	227	569
			firstReactRender	46	38	64	4	48	56
			getState	193	146	691	75	193	231
			initialActions	1	0	3	1	1	2
			loadScripts	838	676	1265	128	935	1053
			setupStore	15	6	49	7	14	33
			numNetworkReqs	72	58	148	20	70	130
	Webpack	Standard Home	uiStartup	796	655	990	77	857	933
			load	639	558	804	74	689	787
			domContentLoaded	633	553	795	73	683	780
			domInteractive	25	15	81	17	22	76
			firstPaint	321	84	802	225	580	736
			backgroundConnect	13	6	58	8	15	28
			firstReactRender	53	32	248	32	60	126
			getState	27	13	81	12	35	46
			initialActions	1	0	2	1	1	2
			loadScripts	630	550	791	72	681	778
			setupStore	12	6	38	6	14	27
			numNetworkReqs	14	6	91	21	6	73
	Webpack	Power User Home	uiStartup	1413	1076	2026	188	1555	1752
			load	728	592	1146	110	843	901
			domContentLoaded	721	584	1141	110	837	890
			domInteractive	31	17	165	26	26	99
			firstPaint	328	82	923	244	610	852
			backgroundConnect	86	7	644	165	66	552
			firstReactRender	49	40	74	5	50	61
			getState	184	143	667	57	190	252
			initialActions	1	0	2	0	1	1
			loadScripts	718	581	1134	109	832	887
			setupStore	15	6	48	9	14	38
			numNetworkReqs	73	58	228	26	67	140
Firefox	Browserify	Standard Home	uiStartup	1358	1116	2186	190	1456	1673
			load	1090	891	1660	114	1147	1290
			domContentLoaded	1089	890	1659	114	1147	1290
			domInteractive	63	31	182	33	85	129
			firstPaint	-	-	-	-	-	-
			backgroundConnect	54	22	206	43	70	183
			firstReactRender	38	30	76	8	39	57
			getState	13	7	127	16	10	33
			initialActions	1	0	2	1	2	2
			loadScripts	1058	872	1634	102	1115	1213
			setupStore	11	5	66	9	10	31
			numNetworkReqs	15	6	81	21	8	77
	Browserify	Power User Home	uiStartup	2636	1681	3920	548	3048	3409
			load	1623	1000	2549	484	2069	2366
			domContentLoaded	1622	1000	2549	484	2069	2366
			domInteractive	125	32	1086	199	93	536
			firstPaint	-	-	-	-	-	-
			backgroundConnect	238	28	1145	303	223	1098
			firstReactRender	56	36	109	12	60	80
			getState	138	72	293	47	161	235
			initialActions	2	0	31	3	2	7
			loadScripts	1467	977	2518	441	1887	2289
			setupStore	47	5	1046	117	33	228
			numNetworkReqs	76	54	135	23	68	126
	Webpack	Standard Home	uiStartup	1562	1308	2186	173	1634	1935
			load	1293	1110	1678	107	1334	1524
			domContentLoaded	1293	1110	1677	107	1334	1524
			domInteractive	70	28	176	34	93	130
			firstPaint	-	-	-	-	-	-
			backgroundConnect	51	22	175	32	58	135
			firstReactRender	42	33	91	10	43	56
			getState	17	6	158	22	15	48
			initialActions	1	0	3	1	2	2
			loadScripts	1265	1092	1650	101	1310	1493
			setupStore	16	7	142	19	15	39
			numNetworkReqs	16	6	90	21	8	76
	Webpack	Power User Home	uiStartup	2668	1776	4023	573	3130	3582
			load	1819	1200	2938	509	2307	2681
			domContentLoaded	1818	1200	2938	509	2307	2680
			domInteractive	182	31	1055	292	104	991
			firstPaint	-	-	-	-	-	-
			backgroundConnect	176	26	1003	225	205	968
			firstReactRender	58	37	112	14	62	92
			getState	148	72	974	98	173	251
			initialActions	3	0	40	5	2	7
			loadScripts	1746	1174	2912	474	2237	2511
			setupStore	48	4	343	75	36	262
			numNetworkReqs	75	55	130	22	74	126

📊 Page Load Benchmark Results

Current Commit: 74c7b31 | Date: 12/10/2025

📄 Localhost MetaMask Test Dapp

Samples: 100

Summary

pageLoadTime-> current mean value: 1.03s (±42ms) 🟡 | historical mean value: 1.04s ⬇️ (historical data)
domContentLoaded-> current mean value: 719ms (±38ms) 🟢 | historical mean value: 727ms ⬇️ (historical data)
firstContentfulPaint-> current mean value: 76ms (±13ms) 🟢 | historical mean value: 83ms ⬇️ (historical data)

📈 Detailed Results

Metric	Mean	Std Dev	Min	Max	P95	P99
pageLoadTime	1.03s	42ms	1.01s	1.32s	1.06s	1.32s
domContentLoaded	719ms	38ms	701ms	984ms	746ms	984ms
firstPaint	76ms	13ms	56ms	184ms	88ms	184ms
firstContentfulPaint	76ms	13ms	56ms	184ms	88ms	184ms
largestContentfulPaint	0ms	0ms	0ms	0ms	0ms	0ms

Bundle size diffs [🚨 Warning! Bundle size has increased!]

background: 58 Bytes (0%)
ui: 772 Bytes (0.01%)
common: 20 Bytes (0%)

Dec 10 '25 03:12 metamaskbot