microsoft / microsoft/react-native-windows

Support DebuggerBreakOnNextLine In Hermes

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#9,358 4 comments 0 reactions 0 assignees View on GitHub

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Area: Developer Experience Area: JavaScript Engine enhancement Workstream: Developer Experience
Dominant language
C++
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Forks
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Avg merge
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Merged PRs (30d)
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Description

We have an instance setting, DebuggerBreakOnNextLine, which allows debugging the boot process. It is wired to Chakra and V8, but doesn't seem to effect Hermes. From feedback in teams, folks would find this functionality to be useful.

Contributor guide

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First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Trace how the DebuggerBreakOnNextLine instance setting is wired for Chakra and V8, then compare that path with Hermes support. Done means the setting also enables debugging during the Hermes boot process; validate the behavior across the affected engines.

Written by the indexing model from the issue text.

Assessment

Tech stack
cpp, react
Domain
devtools
Issue type
Feature
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
35/100

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