feat: add injectable _fetch for React Native compatibility#79
Merged
Conversation
React Native's globalThis.fetch silently drops JS Blob objects from FormData. This allows callers (e.g. bugsplat-expo) to inject expo/fetch which properly serializes Blob attachments. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
There was a problem hiding this comment.
Pull request overview
This PR introduces an injectable fetch implementation to the BugSplat client to improve React Native compatibility (notably enabling expo/fetch to correctly upload Blob parts in FormData).
Changes:
- Added a private
_fetchfunction onBugSplat, defaulting toglobalThis.fetch. - Updated
post()andpostFeedback()to callthis._fetchinstead ofglobalThis.fetch. - Updated/added tests to mock and validate usage of the injectable fetch.
Reviewed changes
Copilot reviewed 2 out of 2 changed files in this pull request and generated 2 comments.
| File | Description |
|---|---|
src/bugsplat.ts |
Adds _fetch and routes crash/feedback POSTs through it for injectable networking. |
spec/bugsplat.spec.ts |
Switches tests to inject a mocked _fetch and adds a targeted test for fetch injection behavior. |
💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
daveplunkett
approved these changes
Apr 18, 2026
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
Add this suggestion to a batch that can be applied as a single commit.This suggestion is invalid because no changes were made to the code.Suggestions cannot be applied while the pull request is closed.Suggestions cannot be applied while viewing a subset of changes.Only one suggestion per line can be applied in a batch.Add this suggestion to a batch that can be applied as a single commit.Applying suggestions on deleted lines is not supported.You must change the existing code in this line in order to create a valid suggestion.Outdated suggestions cannot be applied.This suggestion has been applied or marked resolved.Suggestions cannot be applied from pending reviews.Suggestions cannot be applied on multi-line comments.Suggestions cannot be applied while the pull request is queued to merge.Suggestion cannot be applied right now. Please check back later.
Summary
_fetchproperty (same pattern as existing_formData) defaulting toglobalThis.fetchpost()andpostFeedback()now usethis._fetchinstead ofglobalThis.fetch@bugsplat/expoto injectexpo/fetch, which properly serializes JSBlobobjects inFormData— React Native's built-inglobalThis.fetchsilently drops themTest plan
_fetchis called instead ofglobalThis.fetchexpo/fetchmakescomponentStack.txtBlob attachments appear in BugSplat reports🤖 Generated with Claude Code