chore(6939): add @mui/material v5, Emotion, and @mui/x-date-pickers dependencies

[Copilot]

• Fetch full branch history so commit 9f1d3c76322925cba14611315f0b24ae34fde9f2 is available locally
• Revert commit 9f1d3c76322925cba14611315f0b24ae34fde9f2 in addition to the already reverted follow-up commit
• Re-run targeted validation for the lockfile and affected test
• Run final review/security validation

---

Note

Medium Risk
Moderate risk because it changes core build/tooling dependencies (@babel/core/@babel/runtime) and updates LavaMoat policies, which could affect builds/bundling across the repo.

Overview
Pre-installs MUI v5 + related deps by adding @mui/material, @mui/x-date-pickers, and their Emotion peer dependencies (@emotion/react, @emotion/styled), and updates depcheck ignores accordingly.

Updates Babel tooling by moving @babel/core to 7.29.0 (dropping the previous Yarn patch) and updating the @babel/runtime patch to replace the construct helper polyfill with a Reflect.construct proxy; corresponding LavaMoat policy entries are adjusted for the @jridgewell/remapping dependency and new globals (e.g., structuredClone, process.features.typescript).

Refreshes yarn.lock to reflect the new/updated dependency graph.

^{Reviewed by Cursor Bugbot for commit c775fd7. Bugbot is set up for automated code reviews on this repo. Configure here.}

[socket-security]

Review the following changes in direct dependencies. Learn more about Socket for GitHub.

Diff	Package	Supply Chain Security	Vulnerability	Quality	Maintenance	License
	@​mui/​x-date-pickers@​7.29.4

View full report

[MajorLift]

@metamaskbot update-policies

[metamaskbot]

No policy changes

[metamaskbotv2]

Builds ready [1848ad2]

• builds: chrome, firefox
• builds (beta): chrome, firefox
• builds (flask): chrome, firefox
• builds (test): chrome, firefox
• builds (test-flask): chrome, firefox
• webpack builds: chrome, firefox
• webpack builds (beta): chrome, firefox
• webpack builds (flask): chrome, firefox
• webpack builds (test): chrome, firefox
• webpack builds (test-flask): chrome, firefox
• bundle size: Bundle Size Stats
• bundle analyzer: Bundle Analyzer
• interaction-benchmark: Interaction Stats
• storybook: Storybook
• typescript migration: Dashboard
• all artifacts

⚡ Performance Benchmarks (Total: 🟢 7 pass · 🟡 8 warn · 🔴 0 fail)

Baseline (latest main): 71bd826 | Date: 10/14/58243 | Pipeline: 24672151850 | Baseline logs

Interaction Benchmarks · Samples: 5

Benchmark	chrome-browserify
loadNewAccount	🟡 [Show logs]
confirmTx	🟡 [Show logs]
bridgeUserActions	🟡 [Show logs]

📈 Results compared to the previous 5 runs on main

• ↓ loadNewAccount/load_new_account: -52%
• ↓ loadNewAccount/total: -52%
• ↓ bridgeUserActions/bridge_load_page: -16%
• ↓ bridgeUserActions/bridge_load_asset_picker: -30%
• ↓ bridgeUserActions/bridge_search_token: -28%
• ↓ bridgeUserActions/total: -28%

🌐 Core Web Vitals — 🟢 good · 🟡 needs improvement · 🔴 poor (web.dev thresholds)

• 🟡 loadNewAccount/FCP: p75 2.5s
• 🟡 confirmTx/FCP: p75 2.5s
• 🟡 bridgeUserActions/FCP: p75 2.4s

Startup Benchmarks · Samples: 100

Benchmark	chrome-browserify	chrome-webpack	firefox-browserify	firefox-webpack
startupStandardHome	🟢 [Show logs]	🟢 [Show logs]	🟢 [Show logs]	🟢 [Show logs]

📈 Results compared to the previous 5 runs on main

• ↓ startupStandardHome/uiStartup: -22%
• ↓ startupStandardHome/load: -11%
• ↓ startupStandardHome/domContentLoaded: -13%
• ↑ startupStandardHome/domInteractive: +14%
• ↓ startupStandardHome/initialActions: -33%
• ↓ startupStandardHome/loadScripts: -16%
• ↓ startupStandardHome/numNetworkReqs: -37%
• ↓ startupStandardHome/uiStartup: -19%
• ↓ startupStandardHome/load: -14%
• ↓ startupStandardHome/domContentLoaded: -13%
• ↓ startupStandardHome/backgroundConnect: -36%
• ↓ startupStandardHome/firstReactRender: -19%
• ↓ startupStandardHome/loadScripts: -14%
• ↓ startupStandardHome/numNetworkReqs: -44%
• ↓ startupStandardHome/uiStartup: -11%
• ↓ startupStandardHome/domInteractive: -56%
• ↑ startupStandardHome/backgroundConnect: +14%
• ↓ startupStandardHome/initialActions: -33%
• ↓ startupStandardHome/numNetworkReqs: -34%
• ↓ startupStandardHome/uiStartup: -20%
• ↓ startupStandardHome/load: -12%
• ↓ startupStandardHome/domContentLoaded: -12%
• ↓ startupStandardHome/domInteractive: -59%
• ↓ startupStandardHome/backgroundConnect: -13%
• ↓ startupStandardHome/firstReactRender: -12%
• ↓ startupStandardHome/initialActions: -43%
• ↓ startupStandardHome/loadScripts: -13%
• ↓ startupStandardHome/setupStore: -60%
• ↓ startupStandardHome/numNetworkReqs: -29%

User Journey Benchmarks · Samples: 5 · mock API

Benchmark	chrome-browserify
onboardingImportWallet	🟢 [Show logs]
onboardingNewWallet	🟢 [Show logs]
assetDetails	🟡 [Show logs]
solanaAssetDetails	🟡 [Show logs]
importSrpHome	🟡 [Show logs]
sendTransactions	🟡 [Show logs]
swap	🟡 [Show logs]

📈 Results compared to the previous 5 runs on main

• ↓ onboardingImportWallet/srpButtonToSrpForm: -84%
• ↓ onboardingImportWallet/metricsToWalletReadyScreen: -37%
• ↓ onboardingImportWallet/doneButtonToHomeScreen: -77%
• ↑ onboardingImportWallet/openAccountMenuToAccountListLoaded: +26%
• ↓ onboardingImportWallet/total: -43%
• ↓ onboardingNewWallet/srpButtonToPwForm: -77%
• ↓ onboardingNewWallet/skipBackupToMetricsScreen: -67%
• ↓ onboardingNewWallet/agreeButtonToOnboardingSuccess: -24%
• ↓ onboardingNewWallet/doneButtonToAssetList: -32%
• ↓ onboardingNewWallet/total: -32%
• ↓ assetDetails/assetClickToPriceChart: -78%
• ↓ assetDetails/total: -78%
• ↓ solanaAssetDetails/assetClickToPriceChart: -67%
• ↓ solanaAssetDetails/total: -67%
• ↓ importSrpHome/loginToHomeScreen: -11%
• ↓ importSrpHome/openAccountMenuAfterLogin: -53%
• ↓ importSrpHome/homeAfterImportWithNewWallet: -67%
• ↓ importSrpHome/total: -60%
• ↓ sendTransactions/openSendPageFromHome: -19%
• ↑ sendTransactions/reviewTransactionToConfirmationPage: +34%
• ↑ sendTransactions/total: +31%
• ↓ swap/openSwapPageFromHome: -96%
• ↑ swap/fetchAndDisplaySwapQuotes: +31%
• ↑ swap/total: +11%

🌐 Core Web Vitals — 🟢 good · 🟡 needs improvement · 🔴 poor (web.dev thresholds)

• 🟡 assetDetails/INP: p75 208ms
• 🟡 assetDetails/FCP: p75 2.5s
• 🟡 solanaAssetDetails/FCP: p75 2.6s
• 🟡 importSrpHome/FCP: p75 2.5s
• 🟡 sendTransactions/FCP: p75 2.5s
• 🟡 swap/FCP: p75 2.5s

Dapp Page Load Benchmarks · Samples: 100

Benchmark	chrome-browserify
dappPageLoad	🟢 [Show logs]

Bundle size diffs

• background: 58 Bytes (0%)
• ui: 5 Bytes (0%)
• common: 135 Bytes (0%)

[github-actions]

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.

[metamaskbotv2]

Builds ready [015a796]

• ⚠️ Make sure the build is safe before downloading and running this build.
  • Please do not use these builds with accounts that contain significant real money.
  • Beware the security risks of cache poisoning.
• builds: chrome, firefox
• builds (beta): chrome, firefox
• builds (flask): chrome, firefox
• builds (test): chrome, firefox
• builds (test-flask): chrome, firefox
• webpack builds: chrome, firefox
• webpack builds (beta): chrome, firefox
• webpack builds (flask): chrome, firefox
• webpack builds (test): chrome, firefox
• webpack builds (test-flask): chrome, firefox
• bundle size: Bundle Size Stats
• bundle analyzer: Bundle Analyzer
• interaction-benchmark: Interaction Stats
• storybook: Storybook
• typescript migration: Dashboard
• all artifacts

⚡ Performance Benchmarks (Total: 🟢 0 pass · 🟡 0 warn · 🔴 0 fail)

Baseline (latest main): 71bd826 | Date: 10/14/58243 | Pipeline: 25139729040 | Baseline logs

Interaction Benchmarks · Samples: 5

⚠️ Missing data: chrome/webpack/interactionUserActions, firefox/webpack/interactionUserActions

✅ No regressions detected

Startup Benchmarks · Samples: 100

⚠️ Missing data: chrome/webpack/startupStandardHome, chrome/webpack/startupPowerUserHome, firefox/webpack/startupStandardHome, firefox/webpack/startupPowerUserHome

✅ No regressions detected

User Journey Benchmarks · Samples: 5 · mock API

⚠️ Missing data: chrome/webpack/userJourneyOnboardingImport, chrome/webpack/userJourneyOnboardingNew, chrome/webpack/userJourneyAssets, chrome/webpack/userJourneyAccountManagement, chrome/webpack/userJourneyTransactions, firefox/webpack/userJourneyOnboardingImport, firefox/webpack/userJourneyOnboardingNew, firefox/webpack/userJourneyAssets, firefox/webpack/userJourneyAccountManagement, firefox/webpack/userJourneyTransactions

✅ No regressions detected

Dapp Page Load Benchmarks · Samples: 100

⚠️ Missing data: chrome/webpack/pageLoadBenchmark

✅ No regressions detected

Bundle size diffs

• background: 58 Bytes (0%)
• ui: 5 Bytes (0%)
• common: 135 Bytes (0%)

[MajorLift]

@metamaskbot update-policies

[metamaskbot]

LavaMoat validation is still running. Please retry @metamaskbot update-policies after CI validation completes.

[DDDDDanica]

@metamaskbot update-policies

[metamaskbot]

Policies updated.
👀 Please review the diff for suspicious new powers.

Tip

Follow the policy review process outlined in the LavaMoat Policy Review Process doc before expecting an approval from Policy Reviewers.
🧠 Learn how to read policy diffs: https://lavamoat.github.io/guides/policy-diff/#what-to-look-for-when-reviewing-a-policy-diff

👀 lavamoat/browserify/beta/policy.json changes differ from lavamoat/browserify/main/policy.json changes
👀 lavamoat/browserify/experimental/policy.json changes differ from lavamoat/browserify/main/policy.json changes
👀 lavamoat/browserify/flask/policy.json changes differ from lavamoat/browserify/main/policy.json changes
👀 lavamoat/webpack/mv2/beta/policy.json changes differ from lavamoat/webpack/mv2/main/policy.json changes
👀 lavamoat/webpack/mv2/experimental/policy.json changes differ from lavamoat/webpack/mv2/main/policy.json changes
👀 lavamoat/webpack/mv2/flask/policy.json changes differ from lavamoat/webpack/mv2/main/policy.json changes
👀 lavamoat/webpack/mv3/beta/policy.json changes differ from lavamoat/webpack/mv3/main/policy.json changes
👀 lavamoat/webpack/mv3/experimental/policy.json changes differ from lavamoat/webpack/mv3/main/policy.json changes
👀 lavamoat/webpack/mv3/flask/policy.json changes differ from lavamoat/webpack/mv3/main/policy.json changes

[metamaskbotv2]

✨ Files requiring CODEOWNER review ✨

📜 @MetaMask/policy-reviewers (2 files, +31 -29)

• 📁 lavamoat/
  • 📁 build-system/
    • 📄 policy.json +16 -15
  • 📁 webpack/
    • 📁 build/
      • 📄 policy.json +15 -14

Tip

Follow the policy review process outlined in the LavaMoat Policy Review Process doc before expecting an approval from Policy Reviewers.

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[metamaskbotv2]

Builds ready [c775fd7]

• ⚠️ Make sure the build is safe before downloading and running this build.
  • Please do not use these builds with accounts that contain significant real money.
  • Beware the security risks of cache poisoning.
• builds: chrome, firefox
• builds (beta): chrome, firefox
• builds (flask): chrome, firefox
• builds (test): chrome, firefox
• builds (test-flask): chrome, firefox
• webpack builds: chrome, firefox
• webpack builds (beta): chrome, firefox
• webpack builds (flask): chrome, firefox
• webpack builds (test): chrome, firefox
• webpack builds (test-flask): chrome, firefox
• bundle size: Bundle Size Stats
• bundle analyzer: Bundle Analyzer
• interaction-benchmark: Interaction Stats
• storybook: Storybook
• typescript migration: Dashboard
• all artifacts

⚡ Performance Benchmarks (Total: 🟢 0 pass · 🟡 0 warn · 🔴 0 fail)

Baseline (latest main): 51036da | Date: 5/2/2026 | Pipeline: 25448661641 | Baseline logs

Interaction Benchmarks · Samples: 5

⚠️ Missing data: chrome/webpack/interactionUserActions, firefox/webpack/interactionUserActions

✅ No regressions detected

Startup Benchmarks · Samples: 100

⚠️ Missing data: chrome/webpack/startupStandardHome, chrome/webpack/startupPowerUserHome, firefox/webpack/startupStandardHome, firefox/webpack/startupPowerUserHome

✅ No regressions detected

User Journey Benchmarks · Samples: 5 · mock API

⚠️ Missing data: chrome/webpack/userJourneyOnboardingImport, chrome/webpack/userJourneyOnboardingNew, chrome/webpack/userJourneyAssets, chrome/webpack/userJourneyAccountManagement, chrome/webpack/userJourneyTransactions, firefox/webpack/userJourneyOnboardingImport, firefox/webpack/userJourneyOnboardingNew, firefox/webpack/userJourneyAssets, firefox/webpack/userJourneyAccountManagement, firefox/webpack/userJourneyTransactions

✅ No regressions detected

Dapp Page Load Benchmarks · Samples: 100

⚠️ Missing data: chrome/webpack/pageLoadBenchmark

✅ No regressions detected

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

• background: 763.84 KiB (14.03%)
• ui: 13.47 KiB (0.16%)
• common: 476.48 KiB (3.65%)