Sean Oliver 40a3aa26b1 chore: add dev-toolbar-review skill for growth eng PR reviews (#44819)
Came up in a conversation with @pamelachia about what growth eng should
actually look for when reviewing dev toolbar PRs. We realized the review
criteria were all in my head and not documented anywhere, so this adds a
Claude skill that surfaces a checklist when PRs touch the relevant
files.

### What it covers

- Environment guards (tree-shaking ternaries, `IS_LOCAL_DEV` runtime
checks) — especially relevant since we're expanding visibility to
staging/preview
- Flag override cookies (`x-ph-flag-overrides`, `x-cc-flag-overrides`)
and the read/write sync across dev-tools, posthog-client, and
feature-flags
- Telemetry event subscription (`subscribeToEvents` /
`emitToDevListeners`) side-effect safety
- SSE server telemetry stream and cross-repo implications
- App-level mounting across studio, www, docs
- Also calls out a CODEOWNERS gap: `posthog-client.ts` and
`feature-flags.tsx` aren't assigned to growth-eng, so PRs touching only
those files won't auto-request review

### Testing

Verified the skill is discovered by Claude Code from the repo root.
Content reviewed against the actual code in `packages/dev-tools/` and
`packages/common/`.

<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit

* **Documentation**
* Added internal review guidelines for development-toolbar changes,
covering build-time hiding outside local dev, local feature-flag
override handling, client telemetry listener expectations,
server-sent-event stream safety and reconnection, and app-level
mounting/props validation to ensure correct runtime behavior.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
2026-04-14 15:05:54 +09:00
2026-04-09 15:32:33 -04:00

Supabase

Supabase is the Postgres development platform. We're building the features of Firebase using enterprise-grade open source tools.

  • Hosted Postgres Database. Docs
  • Authentication and Authorization. Docs
  • Auto-generated APIs.
  • Functions.
    • Database Functions. Docs
    • Edge Functions Docs
  • File Storage. Docs
  • AI + Vector/Embeddings Toolkit. Docs
  • Dashboard

Supabase Dashboard

Watch "releases" of this repo to get notified of major updates.

Watch this repo

Documentation

For full documentation, visit supabase.com/docs

To see how to Contribute, visit Getting Started

Community & Support

  • Community Forum. Best for: help with building, discussion about database best practices.
  • GitHub Issues. Best for: bugs and errors you encounter using Supabase.
  • Email Support. Best for: problems with your database or infrastructure.
  • Discord. Best for: sharing your applications and hanging out with the community.

How it works

Supabase is a combination of open source tools. Were building the features of Firebase using enterprise-grade, open source products. If the tools and communities exist, with an MIT, Apache 2, or equivalent open license, we will use and support that tool. If the tool doesn't exist, we build and open source it ourselves. Supabase is not a 1-to-1 mapping of Firebase. Our aim is to give developers a Firebase-like developer experience using open source tools.

Architecture

Supabase is a hosted platform. You can sign up and start using Supabase without installing anything. You can also self-host and develop locally.

Architecture

  • Postgres is an object-relational database system with over 30 years of active development that has earned it a strong reputation for reliability, feature robustness, and performance.
  • Realtime is an Elixir server that allows you to listen to PostgreSQL inserts, updates, and deletes using websockets. Realtime polls Postgres' built-in replication functionality for database changes, converts changes to JSON, then broadcasts the JSON over websockets to authorized clients.
  • PostgREST is a web server that turns your PostgreSQL database directly into a RESTful API.
  • GoTrue is a JWT-based authentication API that simplifies user sign-ups, logins, and session management in your applications.
  • Storage a RESTful API for managing files in S3, with Postgres handling permissions.
  • pg_graphql a PostgreSQL extension that exposes a GraphQL API.
  • postgres-meta is a RESTful API for managing your Postgres, allowing you to fetch tables, add roles, and run queries, etc.
  • Kong is a cloud-native API gateway.

Client libraries

Our approach for client libraries is modular. Each sub-library is a standalone implementation for a single external system. This is one of the ways we support existing tools.

Language Client Feature-Clients (bundled in Supabase client)
Supabase PostgREST GoTrue Realtime Storage Functions
Official
JavaScript (TypeScript) supabase-js postgrest-js auth-js realtime-js storage-js functions-js
Flutter supabase-flutter postgrest-dart gotrue-dart realtime-dart storage-dart functions-dart
Swift supabase-swift postgrest-swift auth-swift realtime-swift storage-swift functions-swift
Python supabase-py postgrest-py gotrue-py realtime-py storage-py functions-py
💚 Community 💚
C# supabase-csharp postgrest-csharp gotrue-csharp realtime-csharp storage-csharp functions-csharp
Go - postgrest-go gotrue-go - storage-go functions-go
Java - - gotrue-java - storage-java -
Kotlin supabase-kt postgrest-kt auth-kt realtime-kt storage-kt functions-kt
Ruby supabase-rb postgrest-rb - - - -
Rust - postgrest-rs - - - -
Godot Engine (GDScript) supabase-gdscript - - - - -

Badges

Made with Supabase

[![Made with Supabase](https://supabase.com/badge-made-with-supabase.svg)](https://supabase.com)
<a href="https://supabase.com">
  <img
    width="168"
    height="30"
    src="https://supabase.com/badge-made-with-supabase.svg"
    alt="Made with Supabase"
  />
</a>

Made with Supabase (dark)

[![Made with Supabase](https://supabase.com/badge-made-with-supabase-dark.svg)](https://supabase.com)
<a href="https://supabase.com">
  <img
    width="168"
    height="30"
    src="https://supabase.com/badge-made-with-supabase-dark.svg"
    alt="Made with Supabase"
  />
</a>

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Description
The Postgres development platform. Supabase gives you a dedicated Postgres database to build your web, mobile, and AI applications.
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