Refactor mergeDuplicates to pass currentUserData

[parasharrajat]

Explanation of Change

Fixed Issues

$ #66519
PROPOSAL:

Tests

1. Create 2 expenses in a workspace.
2. Open the created report.
3. Select any expense.
4. Click > more > Duplicate expense.
5. Verify that the expense is duplicated.
6. Click the review Duplicate button. Select to keep one of the expenses.
7. Verify that duplicate expenses are removed and only one left.

• Verify that no errors appear in the JS console

Offline tests

QA Steps

same as tests

• Verify that no errors appear in the JS console

PR Author Checklist

• I linked the correct issue in the ### Fixed Issues section above
• I wrote clear testing steps that cover the changes made in this PR
  • I added steps for local testing in the Tests section
  • I added steps for the expected offline behavior in the Offline steps section
  • I added steps for Staging and/or Production testing in the QA steps section
  • I added steps to cover failure scenarios (i.e. verify an input displays the correct error message if the entered data is not correct)
  • I turned off my network connection and tested it while offline to ensure it matches the expected behavior (i.e. verify the default avatar icon is displayed if app is offline)
  • I tested this PR with a High Traffic account against the staging or production API to ensure there are no regressions (e.g. long loading states that impact usability).
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• I tested other components that can be impacted by my changes (i.e. if the PR modifies a shared library or component like Avatar, I verified the components using Avatar are working as expected)
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• If the PR modifies code that runs when editing or sending messages, I tested and verified there is no unexpected behavior for all supported markdown - URLs, single line code, code blocks, quotes, headings, bold, strikethrough, and italic.
• If the PR modifies a generic component, I tested and verified that those changes do not break usages of that component in the rest of the App (i.e. if a shared library or component like Avatar is modified, I verified that Avatar is working as expected in all cases)
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• If a new page is added, I verified it's using the ScrollView component to make it scrollable when more elements are added to the page.
• I added unit tests for any new feature or bug fix in this PR to help automatically prevent regressions in this user flow.
• If the main branch was merged into this PR after a review, I tested again and verified the outcome was still expected according to the Test steps.

Screenshots/Videos

19.04.2026_21.50.22_REC.mp4

[melvin-bot]

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[melvin-bot]

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[chatgpt-codex-connector]

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[chatgpt-codex-connector]

Keep a non-empty login when creating optimistic thread action

currentUserPersonalDetails.login is optional, and CurrentUserPersonalDetailsProvider only guarantees accountID (and backfills email, not login) before personal details fully load. Passing currentUserPersonalDetails?.login ?? '' can therefore send an empty string into mergeDuplicates, which then builds the optimistic CREATED action with blank actor text (" created this report") when a new thread is created. This regresses the optimistic UI in startup/offline timing windows; use a fallback that includes the guaranteed email/session value.

Useful? React with 👍 / 👎.

[chatgpt-codex-connector]

Avoid asserting transient user fields in API param matcher

These new properties are now part of mergeParams, but mergeDuplicates explicitly strips currentUserLogin and currentUserAccountID before calling API.write (allParams is built from ...params after destructuring). As a result, existing assertions like expect.objectContaining(mergeParams) now require keys that are intentionally absent from the API payload, causing the updated unit tests to fail even when behavior is correct.

Useful? React with 👍 / 👎.

[ikevin127]

Reviewer Checklist

• I have verified the author checklist is complete (all boxes are checked off).
• I verified the correct issue is linked in the ### Fixed Issues section above
• I verified testing steps are clear and they cover the changes made in this PR
  • I verified the steps for local testing are in the Tests section
  • I verified the steps for Staging and/or Production testing are in the QA steps section
  • I verified the steps cover any possible failure scenarios (i.e. verify an input displays the correct error message if the entered data is not correct)
  • I turned off my network connection and tested it while offline to ensure it matches the expected behavior (i.e. verify the default avatar icon is displayed if app is offline)
• I checked that screenshots or videos are included for tests on all platforms
• I included screenshots or videos for tests on all platforms
• I verified tests pass on all platforms & I tested again on:
  • Android: Native
  • Android: mWeb Chrome
  • iOS: Native
  • iOS: mWeb Safari
  • MacOS: Chrome / Safari
• If there are any errors in the console that are unrelated to this PR, I either fixed them (preferred) or linked to where I reported them in Slack
• I verified proper code patterns were followed (see Reviewing the code)
  • I verified that any callback methods that were added or modified are named for what the method does and never what callback they handle (i.e. toggleReport and not onIconClick).
  • I verified that the left part of a conditional rendering a React component is a boolean and NOT a string, e.g. myBool && <MyComponent />.
  • I verified that comments were added to code that is not self explanatory
  • I verified that any new or modified comments were clear, correct English, and explained "why" the code was doing something instead of only explaining "what" the code was doing.
  • I verified any copy / text shown in the product is localized by adding it to src/languages/* files and using the translation method
  • I verified all numbers, amounts, dates and phone numbers shown in the product are using the localization methods
  • I verified any copy / text that was added to the app is grammatically correct in English. It adheres to proper capitalization guidelines (note: only the first word of header/labels should be capitalized), and is either coming verbatim from figma or has been approved by marketing (in order to get marketing approval, ask the Bug Zero team member to add the Waiting for copy label to the issue)
  • I verified proper file naming conventions were followed for any new files or renamed files. All non-platform specific files are named after what they export and are not named "index.js". All platform-specific files are named for the platform the code supports as outlined in the README.
  • I verified the JSDocs style guidelines (in STYLE.md) were followed
• If a new code pattern is added I verified it was agreed to be used by multiple Expensify engineers
• I verified that this PR follows the guidelines as stated in the Review Guidelines
• I verified other components that can be impacted by these changes have been tested, and I retested again (i.e. if the PR modifies a shared library or component like Avatar, I verified the components using Avatar have been tested & I retested again)
• I verified all code is DRY (the PR doesn't include any logic written more than once, with the exception of tests)
• I verified any variables that can be defined as constants (ie. in CONST.js or at the top of the file that uses the constant) are defined as such
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• If new assets were added or existing ones were modified, I verified that:
  • The assets are optimized and compressed (for SVG files, run npm run compress-svg)
  • The assets load correctly across all supported platforms.
• If the PR modifies code that runs when editing or sending messages, I tested and verified there is no unexpected behavior for all supported markdown - URLs, single line code, code blocks, quotes, headings, bold, strikethrough, and italic.
• If the PR modifies a generic component, I tested and verified that those changes do not break usages of that component in the rest of the App (i.e. if a shared library or component like Avatar is modified, I verified that Avatar is working as expected in all cases)
• If the PR modifies a component related to any of the existing Storybook stories, I tested and verified all stories for that component are still working as expected.
• If the PR modifies a component or page that can be accessed by a direct deeplink, I verified that the code functions as expected when the deeplink is used - from a logged in and logged out account.
• If the PR modifies the UI (e.g. new buttons, new UI components, changing the padding/spacing/sizing, moving components, etc) or modifies the form input styles:
  • I verified that all the inputs inside a form are aligned with each other.
  • I added Design label and/or tagged @Expensify/design so the design team can review the changes.
• If a new page is added, I verified it's using the ScrollView component to make it scrollable when more elements are added to the page.
• If the main branch was merged into this PR after a review, I tested again and verified the outcome was still expected according to the Test steps.
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Screenshots/Videos

Screen.Recording.2026-04-20.at.13.56.08.mov

[ikevin127]

🟢 LGTM

The PR refactors the mergeDuplicates function to receive currentUserLogin and currentUserAccountID as parameters instead of reading them internally from Onyx via getCurrentUserEmail() and getUserAccountID(). This follows the Onyx best practice pattern of parameterizing state access for better testability ✅

[parasharrajat]

@ikevin127, can you please tag @tgolen after your review on these PRs going forward?

[codecov]

Codecov Report

❌ Looks like you've decreased code coverage for some files. Please write tests to increase, or at least maintain, the existing level of code coverage. See our documentation here for how to interpret this table.

Files with missing lines	Coverage Δ
src/libs/actions/IOU/Duplicate.ts	93.75% <100.00%> (-0.05%)	⬇️
src/pages/TransactionDuplicate/Confirmation.tsx	0.00% <0.00%> (ø)
... and 8 files with indirect coverage changes

[parasharrajat]

@tgolen Ready.

[parasharrajat]

@tgolen Ready for merge.

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[github-actions]

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✋ This PR was not deployed to staging yet because QA is ongoing. It will be automatically deployed to staging after the next production release.

[OSBotify]

🚀 Deployed to staging by https://github.com/tgolen in version: 9.3.62-5 🚀

platform	result
🕸 web 🕸	success ✅
🤖 android 🤖	success ✅
🍎 iOS 🍎	success ✅

Bundle Size Analysis (Sentry):

• Android
• iOS

[MelvinBot]

I reviewed the changes in this PR. It's a purely internal code refactoring that changes the mergeDuplicates function signature to accept currentUserLogin and currentUserAccountID as explicit parameters instead of reading them from Onyx internally.

There are no user-facing changes — no new features, UI changes, or modified terminology.

No help site documentation changes are required.

[OSBotify]

🚀 Deployed to staging by https://github.com/tgolen in version: 9.3.64-0 🚀

platform	result
🕸 web 🕸	success ✅
🤖 android 🤖	success ✅
🍎 iOS 🍎	success ✅

Bundle Size Analysis (Sentry):

• Android
• iOS