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claude[bot]andClaude
235488e66b
<!-- ccr-slack-attribution --> _Requested by **Ali Waseem** · [Slack thread](https://supabase.slack.com/archives/C063LNYJJKS/p1787336596649619)_ **Before:** editing a cell in the table editor could throw, and the edit was silently lost — the typed value vanished and nothing was saved. Separately, opening the SQL editor could throw before the editor rendered, and the global error boundary replaced the entire page, so there was no editor at all until a reload. **After:** a row change with no matching previous row is a no-op instead of a throw, and the SQL editor shows its normal loading state instead of taking down the page. Two independent undefined guards for two confirmed Sentry crashes, one per commit so either can be dropped on its own. **How:** the first commit moves the existing previousRow guard in `useOnRowsChange` above the `changedColumn` computation that dereferences it, and drops the non-null assertion that hid the problem from TypeScript. The second reads the snippet content in `deriveSnippetIdentity` through optional chaining, so a missing `snippets` map, or an entry without a `snippet`, resolves to still-loading — the same answer the old code gave for an id that is not in the map. Behaviour is unchanged in every case that did not crash. ## I have read the [CONTRIBUTING.md](https://github.com/supabase/supabase/blob/master/CONTRIBUTING.md) file. YES ## What kind of change does this PR introduce? Bug fix. ## What is the current behavior? **[K7M, Cannot read properties of undefined (reading 'idx')](https://supabase.sentry.io/issues/7681899596/)** — 4 events / 1 user — in `apps/studio/components/grid/components/grid/Grid.utils.tsx`. Inside `useOnRowsChange`, the callback passed to `Object.keys(rowData).find(...)` reads the candidate column off `previousRow` through a non-null assertion, three lines above the `if (!previousRow || !changedColumn) return` that was meant to protect it. `rows.find(...)` returns undefined whenever no row matches, and the assertion is why TypeScript never flagged the dereference. The four events came from one user inside about two minutes, so it is deterministic rather than a one-off, and every throw is an edit the user loses. **[K7J, Cannot use 'in' operator to search for a snippet uuid in undefined](https://supabase.sentry.io/issues/7680905437/)** — 1 event / 1 user, full-page crash — in `apps/studio/components/interfaces/SQLEditor/SQLEditor.utils.ts`, line 331. `deriveSnippetIdentity` applies the `in` operator to its `snippets` argument and then reads `snippets[id].snippet.content`. The parameter is declared required and non-optional, but `snippets` arrived undefined at runtime, so `in` threw and the error reached the global error boundary, which unmounted the whole SQL editor page. The `snippets[id].snippet` read on the same line is a second unguarded dereference: an entry without a `snippet` crashes identically. ## What is the new behavior? Both crashes become no-ops. - Grid: return early when `previousRow` is missing, then compute `changedColumn`, with the assertion removed. When a previous row is found, the code takes exactly the path it took before. - SQL editor: `snippets?.[id]?.snippet?.content === undefined` replaces the `in` check. A missing map, a missing entry, and an entry with no `snippet` all read as still loading, which is what the surrounding code already does while a snippet is being fetched. The parameter type is left required, since the only caller (`useSnippetIdentity.ts`) passes the store's `snippets` record, which is typed as always present — the type is not the thing that was wrong. Two test cases are added to the existing `deriveSnippetIdentity` block, which previously only passed fully populated maps: one for an undefined `snippets` map, and one for an entry missing its `snippet`. ## Additional context **Why `snippets` was undefined is unexplained.** The store initialises it to an empty object (`apps/studio/state/sql-editor/sql-editor-state.ts:34`) and its only reassignment writes an object, so there is no code path in studio that sets it to undefined. This commit is a defensive guard against a crash, not a root-cause fix, and nothing here should be read as an explanation. **Verification:** no local checks were possible in the authoring environment — the checkout has no `node_modules` and `pnpm install` cannot complete there, so typecheck, lint and the studio unit tests could not be run. CI on this PR is the only verification. --------- Co-authored-by: Claude <noreply@anthropic.com>
Supabase
Supabase is the Postgres development platform. We're building the features of Firebase using enterprise-grade open source tools.
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Supabase is a combination of open source tools. We’re 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.
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Supabase is a hosted platform. You can sign up and start using Supabase without installing anything. You can also self-host and develop locally.
- 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.
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- GoTrue is a JWT-based authentication API that simplifies user sign-ups, logins, and session management in your applications.
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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 |
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| 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 | - | - | - | - | - |
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