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Fix - heic context lost#85231

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mountiny merged 4 commits intoExpensify:mainfrom
callstack-internal:fix/heic-context-lost
Mar 17, 2026
Merged

Fix - heic context lost#85231
mountiny merged 4 commits intoExpensify:mainfrom
callstack-internal:fix/heic-context-lost

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@rinej rinej commented Mar 13, 2026

Explanation of Change

Fixed context loss during HEIC image processing by adding error handling and fallback conversion. When HEIC conversion fails, the image is processed using a fallback method, preventing crashes and improving logging for debugging.

Based on the previous Draft PR -> #83675

Fixed Issues

$ #81702
PROPOSAL:

Tests

Offline tests

QA Steps

Prerequisites:

  • iPhone 15 Pro, 15 Pro Max, 16 Pro, or 16 Pro Max
  • Camera set to 48MP

Test steps:

  • Open Create → Scan receipt
  • Take a photo using the shutter button
  • Expected: Photo captures and proceeds to confirmation - no error dialog, no crash, no hang

Additional test for picking from browser:

  • Open any chat
  • Tap attachment → "Choose from gallery"
  • Select a 48MP HEIC photo
  • Expected: no error dialog, image attaches successfully

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).
  • I included screenshots or videos for tests on all platforms
  • I ran the tests on all platforms & verified they passed on:
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    • Android: mWeb Chrome
    • iOS: Native
    • iOS: mWeb Safari
    • MacOS: Chrome / Safari
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      • If any non-english text was added/modified, I used JaimeGPT to get English > Spanish translation. I then posted it in #expensify-open-source and it was approved by an internal Expensify engineer. Link to Slack message:
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    • 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
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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 any new file was added I verified that:
    • The file has a description of what it does and/or why is needed at the top of the file if the code is not self explanatory
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    • A similar style doesn't already exist
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    • I verified that all the inputs inside a form are aligned with each other.
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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

Android: Native
Android: mWeb Chrome
iOS: Native
iOS: mWeb Safari
MacOS: Chrome / Safari

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🚧 @mountiny has triggered a test Expensify/App build. You can view the workflow run here.

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m-natarajan commented Mar 13, 2026

@rinej Completed testing in iPhone 15 pro - 18.6.2, iPhone 17 Pro Max, iOS 26.3 and iPhone 16 Pro, No issues observed

@rinej rinej marked this pull request as ready for review March 16, 2026 14:00
@rinej rinej requested review from a team as code owners March 16, 2026 14:00
@melvin-bot melvin-bot bot requested review from ikevin127 and removed request for a team March 16, 2026 14:01
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melvin-bot bot commented Mar 16, 2026

@ikevin127 Please copy/paste the Reviewer Checklist from here into a new comment on this PR and complete it. If you have the K2 extension, you can simply click: [this button]

@melvin-bot melvin-bot bot requested review from trjExpensify and removed request for a team March 16, 2026 14:01
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codecov bot commented Mar 16, 2026

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/hooks/useFilesValidation.tsx 19.23% <0.00%> (ø)
...rc/libs/fileDownload/heicConverter/index.native.ts 4.08% <0.00%> (ø)
src/components/AttachmentPicker/index.native.tsx 20.75% <0.00%> (-0.20%) ⬇️
src/libs/cropOrRotateImage/index.ts 0.00% <0.00%> (ø)
src/libs/cropOrRotateImage/index.native.ts 2.63% <0.00%> (-9.87%) ⬇️
... and 578 files with indirect coverage changes

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@ikevin127 are you able to review this one?

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Yes, will do!

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ikevin127 commented Mar 16, 2026

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 that the composer does not automatically focus or open the keyboard on mobile unless explicitly intended. This includes checking that returning the app from the background does not unexpectedly open the keyboard.
  • I verified tests pass on all platforms & I tested again on:
    • Android: HybridApp
    • Android: mWeb Chrome
    • iOS: HybridApp
    • 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 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.ts or at the top of the file that uses the constant) are defined as such
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    • All JSX used for rendering exists in the render method
    • The component has the minimum amount of code necessary for its purpose, and it is broken down into smaller components in order to separate concerns and functions
  • If any new file was added I verified that:
    • The file has a description of what it does and/or why is needed at the top of the file if the code is not self explanatory
  • If a new CSS style is added I verified that:
    • A similar style doesn't already exist
    • The style can't be created with an existing StyleUtils function (i.e. StyleUtils.getBackgroundAndBorderStyle(theme.componentBG)
  • 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.
  • For any bug fix or new feature in this PR, I verified that sufficient unit tests are included to prevent regressions in this 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.
  • I have checked off every checkbox in the PR reviewer checklist, including those that don't apply to this PR.

Screenshots/Videos

Android: HybridApp
android-hybrid.mp4
Android: mWeb Chrome
android-mweb.mp4
iOS: HybridApp
ios-hybrid.MP4
iOS: mWeb Safari
ios-mweb.MP4

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(3) Code-review related comments to be addressed before merging. Moving forward to manual testing ♻️

Comment on lines +44 to +56
RNFetchBlob.fs
.stat(filePath)
.then(({size}) => {
resolve({
uri,
width: 0,
height: 0,
size,
type: options.type || 'image/jpeg',
name: options.name || 'fileName.jpg',
});
})
.catch(reject);
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🔴 CRITICAL - Layout Breakage: Returning 0 for Image Dimensions

Issue: When the fallback path is triggered, we are mocking the file response and hardcoding width: 0, height: 0.

Why it matters: In React Native, UI components dependent on dynamic aspect-ratio layout (like image bubbles in chat or attachments) often compute spacing via aspectRatio: width / height. Passing a 0 will explicitly cause NaN (divide-by-zero) propagation, which notoriously causes Invariant Violation crashes in React Native, or results in a completely invisible 0x0 area in the UI.

Bug Example: If a 48MP manipulation fails, the chat screen processes a file with 0x0 size. The chat renders a collapsed attachment, or the app throws a fatal layout exception.

Suggested Fix: You must extract the actual image dimensions of the original image before resolving the fallback.

import {Image} from 'react-native';
Suggested change
RNFetchBlob.fs
.stat(filePath)
.then(({size}) => {
resolve({
uri,
width: 0,
height: 0,
size,
type: options.type || 'image/jpeg',
name: options.name || 'fileName.jpg',
});
})
.catch(reject);
// Retrieve actual size to prevent divide-by-zero layout crashes
Image.getSize(uri, (width, height) => {
RNFetchBlob.fs.stat(filePath).then(({size}) => {
resolve({
uri,
width,
height,
size,
type: options.type || 'image/jpeg',
name: options.name || 'fileName.jpg',
});
}).catch(reject);
}, (getSizeError) => {
// If we can't even get dimensions, we must reject
reject(getSizeError);
});

})
.catch(reject);
})
.catch((error) => {
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🟠 Cross-Platform Compatibility & Android Side-Effects - Unintended Fallback on Android

Issue: As noted in the issue affected devices and PR description - this logic fix targets an issue existent on iOS mWeb / Native. However, we modified .native.ts files, which executes on both Android and iOS.

Why it matters: If an Android device fails to manipulate an image (e.g., encountering an OutOfMemoryError typical of lower-end Android devices loading large bit-maps), this .catch() block will now swallow the error and pass the massive original image forward.

Uploading heavily uncompressed local images on Android will cause immediate "Network Request Failed" errors due to payload size limits, or further OOM crashes in the network layer.

Suggested Fix: Isolate this fallback logic platform-specifically, using platform specific files as per our guidelines. Pseudocode:

import {Platform} from 'react-native';

// Inside the catch block...
.catch((error) => {
    if (Platform.OS === 'android') {
        Log.warn('Image manipulation failed on Android', {error: error instanceof Error ? error.message : String(error)});
        // Allow Android to fail fast and maintain its current lifecycle
        return reject(error);
    }
    
    // Proceed with iOS fallback logic...
})

@@ -147,11 +147,12 @@ function useFilesValidation(onFilesValidated: (files: FileObject[], dataTransfer
};

const convertHeicImageToJpegPromise = (file: FileObject): Promise<FileObject> => {
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🟡 Type Consistency & Clean Code Principles - Function Contract Violation

Issue: The function is named convertHeicImageToJpegPromise, but the modified .catch block now resolves resolve(originalFile).

Why this matters: The caller explicitly expects a JPEG if the Promise resolves. By resolving a .heic file, you permit HEIC files into the app feed pipeline. If Expensify Web users open this chat in Google Chrome, the HEIC attachment will appear completely broken because most web browsers do not natively support decoding HEIC.

Suggested Fix: If we accept that HEICs might be sent un-converted, you must rename the function to something that reflects reality, like ensureProcessableImagePromise.

ℹ️ Additionally, communicate with the team whether the web Client / Backend actually parses non-converted HEICs. Failing the conversion and showing an alert format might actually be better than polluting the timeline with an unreadable web attachment.

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✅ Completed PR Reviewer Checklist, manual testing on real device looks good. Other than the ☝️ 3 comments / concerns found during code-review, LGTM 🟢

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melvin-bot bot commented Mar 17, 2026

We did not find an internal engineer to review this PR, trying to assign a random engineer to #81702 as well as to this PR... Please reach out for help on Slack if no one gets assigned!

@melvin-bot melvin-bot bot requested a review from marcochavezf March 17, 2026 02:39
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Yikes, that's a nasty bug in a core flow! 👍

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rinej commented Mar 17, 2026

@ikevin127 thanks for the review!
I added the recommended improvements

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Thanks for applying the changes ✅

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Noting one thing as a follow up but thank you, I will move it ahead so this is fixed asap

Comment on lines +44 to +47
if (Platform.OS !== 'ios') {
reject(error);
return;
}
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Could you split this up to ios and android files to remove this check?

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should I create new PR with that quick fix?

@mountiny mountiny merged commit b01bf33 into Expensify:main Mar 17, 2026
34 checks passed
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🚧 @mountiny has triggered a test Expensify/App build. You can view the workflow run here.

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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.

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🧪🧪 Use the links below to test this adhoc build on Android, iOS, and Web. Happy testing! 🧪🧪
Built from App PR #85231.

Android 🤖 iOS 🍎
❌ FAILED ❌ https://ad-hoc-expensify-cash.s3.us-east-1.amazonaws.com/rock-artifacts/ad-hoc/rock-ios-device-AdHoc-b01bf33-84e475f-504ddab03ed9b6fbb0e6cb65555a77d56cfbdb77/index.html
The QR code can't be generated, because the Android build failed iOS
Web 🕸️
https://85231.pr-testing.expensify.com
Web

👀 View the workflow run that generated this build 👀

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🚀 Deployed to staging by https://github.com/mountiny in version: 9.3.40-0 🚀

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

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🚀 Deployed to staging by https://github.com/mountiny in version: 9.3.40-0 🚀

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

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🚀 Deployed to production by https://github.com/cristipaval in version: 9.3.41-4 🚀

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

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6 participants