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fix: Handle failed arraybuffer instanceof checks #393

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merged 1 commit into from
Jun 2, 2021

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offirgolan
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Description

When context is provided to both the XHR and Fetch adapters, the arraybuffers that are created by the responses don't pass Buffer.from's instanceof check. To get around that (for now), we clone the ArrayBuffer which uses the same constructor that Buffer.from expects.

Motivation and Context

Resolves #388.

Types of Changes

  • Bug fix (non-breaking change which fixes an issue)
  • New feature (non-breaking change which adds functionality)
  • Breaking change (fix or feature that would cause existing functionality to change)

Checklist

  • I have added tests to cover my changes.
  • My change requires a change to the documentation.
  • I have updated the documentation accordingly.
  • My code follows the code style of this project.
  • My commits and the title of this PR follow the Conventional Commits Specification.
  • I have read the contributing guidelines.

@offirgolan offirgolan requested a review from jasonmit June 2, 2021 01:05
!(arrayBuffer instanceof ArrayBuffer) &&
'byteLength' in arrayBuffer
) {
arrayBuffer = cloneArrayBuffer(arrayBuffer);
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The alternative here is to do something like arrayBuffer.__proto__ = ArrayBuffer.prototype but that feels very flakey

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@offirgolan offirgolan Jun 2, 2021

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The pro to just changing the proto is that we won't need to clone the array buffer at all

@offirgolan offirgolan changed the title fix: Clone the arraybuffer if it fails instanceof check fix: Handle failed arraybuffer instanceof checks Jun 2, 2021
@offirgolan offirgolan merged commit 247be0a into master Jun 2, 2021
@offirgolan offirgolan deleted the buffer-es6-instanceof-fix branch June 2, 2021 17:04
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Can't get Fetch recording to work (with Cypress)
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