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Firefox DevTools Contributor Docs

This is the contributor documentation for Firefox Developer Tools. If you’re looking for help with using the tools, see the user docs. Note that this section only contains technical information specific to Firefox DevTools, make sure to first read the Firefox contributor documentation which explains how to contribute to Firefox in general (setting up the environment, submitting patches, etc.).

Automated tests

Automated tests
xpcshell
Chrome mochitests
DevTools mochitests
Node tests
Allocation tests
Test example
How to run them locally
Debug leaks
How to easily get data from try run
Following trends for these tests
JavaScript Objects tests
Writing tests
Debugging intermittent failures
Performance tests overview
Backward Compatibility tests
DAMP Performance tests
Writing new DAMP performance tests
How to name your test and register it?
How to run your new test?
Example
Advanced tips

Files and directories

Files and directories
Adding New Files

Tool Architectures

Inspector Panel Architecture
Inspector Highlighters
Memory
Debugger
Responsive Design Mode
Console
Network
Storage
Inspector
Responsive Design Mode devices

Frontend

CSS
Panel SVGs
React
React Guidelines
Redux
Redux Guidelines
Telemetry
Current DevTools CSP
Scope of the DevTools CSP
Recognizing CSP issues
Fixing CSP issues
Fixing CSP issues in tests

Backend

Remote Debugging Protocol
Backend Overview
Client API
Debugger API
Backward Compatibility
Actors Organization
Writing Actors With protocol.js
Registering A New Actor
Actor Best Practices

Performance

Investigating performance issues
Writing efficient React code

Preferences

Preferences

Recurring tasks

Release tasks
Performance sheriffing