feat(postgrest)!: execute typed table builders through a PostgrestTableExecutor and add SupabaseClientInterceptor

[spydon]

What

Milestone 1 of RFC: Pluggable offline support for the client SDKs, tracked in SDK-1886.

The typed table builders collected filters, orderings, column expressions and payloads as values but rendered them into URL parameters on every step. Nothing could run a typed query anywhere but PostgREST without parsing those URLs back, and the only extension point, httpClient, sits inside AuthHttpClient, so a request held back and replayed later carries a stale token.

postgrest

• PostgrestTableRequest: the immutable value the typed builders now accumulate (table, schema, operation, columns, filter, orderings, limit, offset, embedded pages, result shape, count option, payload, upsert options, maxAffected, stripNulls, dryRun, explain options).
• PostgrestTableResult: decoded data plus count, converted into the table's row type by the builder.
• PostgrestTableExecutor and PostgrestHttpTableExecutor. The HTTP executor renders the value through the untyped builders, so the parameters and headers on the wire are the ones from() produces for the same query. PostgrestClient.table(table, executor:) accepts another executor.
• An interceptor's resume() is not awaited by the Flutter lifecycle listener, so a slow or failing interceptor cannot delay or skip the realtime reconnect; a failing dispose() is logged and does not abort the client disposal.
• PostgrestTypedBuilder.request exposes the collected value.

supabase

• SupabaseClientInterceptor with wrapTableExecutor, attach, resume and dispose, and SupabaseClient(interceptors: [...]). Interceptors fold around the executor that table() uses; from(), rpc(), storage, functions and realtime never pass through an interceptor. Auth headers are attached inside the executor, so a replayed request always authenticates as the current user. A header change keeps the interceptor chain in place.

supabase_flutter and supabase_test

• Supabase.initialize(interceptors:), and the lifecycle listener calls interceptor.resume() on resumed before the early return when no realtime channels exist.
• testSupabaseClient(interceptors:).

Breaking changes

• PostgrestTypedQueryBuilder and SupabaseTypedQueryBuilder take an executor instead of a client.
• SupabaseQuerySchema requires a tableExecutor.

Both are @experimental surfaces on the v3 line.

Tests

• packages/postgrest/test/typed_query_test.dart keeps asserting the rendered URLs and headers of every typed shape, which proves the deferred rendering is parameter identical. One assertion compared Prefer directives as an ordered string and now compares them as a set; the directive order changed, the semantics did not.
• New packages/postgrest/test/table_executor_test.dart: the request value for every builder shape through a recording executor, plus PostgrestHttpTableExecutor parity, returning selects, schema scoping and HEAD counts.
• New packages/supabase/test/client_interceptor_test.dart: table() reaches the interceptor while from(), rpc() and functions bypass it, the wire carries Authorization and apikey although the request value has no headers, attach, wrap and dispose order for two interceptors, header changes, schema scoping.
• New packages/supabase_flutter/test/interceptor_test.dart: interceptors reach the client, resume() runs on resume without channels and never after dispose.

Compliance matrix updated; validate-compliance, check-drift and check-api-symbols pass locally.

Summary by CodeRabbit

• New Features
  • Added experimental interceptors for typed table requests, configurable during client initialization. Interceptors can wrap request handling and receive lifecycle callbacks, including app-resume notifications in Flutter.
  • Exposed typed table request and executor APIs, including access to the request represented by a typed query builder.
  • Typed table queries can now use a custom executor; by default, they continue to use HTTP.
  • Exposed relation and query details for embedded scopes.
• Documentation
  • Clarified how typed table requests use executors and interceptors, and how this differs from untyped requests.

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📥 Commits

Reviewing files that changed from the base of the PR and between d758e51 and 31239db.

📒 Files selected for processing: 12

• MIGRATION.md
• packages/postgrest/lib/postgrest.dart
• packages/postgrest/lib/src/postgrest_embedded_scope.dart
• packages/postgrest/lib/src/postgrest_table_request.dart
• packages/postgrest/lib/src/postgrest_typed_builder.dart
• packages/postgrest/lib/src/postgrest_typed_transform_builder.dart
• packages/postgrest/test/table_executor_test.dart
• packages/postgrest/test/typed_query_test.dart
• packages/supabase/lib/src/supabase_client.dart
• packages/supabase/lib/src/supabase_query_schema.dart
• packages/supabase_flutter/lib/src/supabase.dart
• sdk-compliance.yaml

💤 Files with no reviewable changes: 1

• packages/postgrest/lib/src/postgrest_table_request.dart

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📝 Walkthrough

📝 Walkthrough

Walkthrough

The PostgREST typed table API now supports configurable executors and exports its request and executor types. Supabase adds interceptors for typed table requests, with attachment, disposal, and Flutter foreground-resume hooks.

Changes

Typed table execution

Layer / File(s)	Summary
PostgREST typed request and executor API packages/postgrest/lib/*, packages/postgrest/lib/src/postgrest_typed_*.dart, packages/postgrest/test/*, sdk-compliance.yaml, AGENTS.md	Typed builders expose their collected request and use a supplied executor. The public library exports the request and executor types. Tests cover request values, builder behavior, and HTTP execution.
Supabase typed-table interceptor integration packages/supabase/lib/*, packages/supabase/lib/src/*, packages/supabase/test/client_interceptor_test.dart, packages/supabase_test/lib/src/test_supabase_client.dart, MIGRATION.md, sdk-compliance.yaml	SupabaseClient accepts interceptors and wraps the typed table executor with them. The client attaches interceptors in registration order and disposes them in reverse order. Typed table requests use the executor, including through scoped schemas.
Flutter interceptor lifecycle packages/supabase_flutter/lib/src/supabase.dart, packages/supabase_flutter/test/interceptor_test.dart	Supabase.initialize accepts and forwards interceptors. Foreground resume callbacks run serially per interceptor, and disposal waits for pending callbacks.

Priority: ➖ Normal

Estimated code review effort: 3 (Moderate) | ~25 minutes

Change: Feature

Sequence Diagram(s)

sequenceDiagram
  participant Caller
  participant SupabaseClient
  participant InterceptorChain
  participant CurrentPostgrestClient
  Caller->>SupabaseClient: Submit typed table request
  SupabaseClient->>InterceptorChain: Execute wrapped table request
  InterceptorChain->>CurrentPostgrestClient: Delegate through inner executor
  CurrentPostgrestClient-->>InterceptorChain: Return table result
  InterceptorChain-->>Caller: Return intercepted result

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Suggested reviewers: grdsdev

Merge Risk: ⚪ Minimal · up to 31239

No actionable merge-blocking issue remains; the change is mergeable after normal checks.

Pre-merge checks: 5

Passed checks: 5 passed

Check name	Status	Explanation
Description Check		Check skipped - CodeRabbit’s high-level summary is enabled.
Title check		The title clearly identifies the two main changes: executor-based typed table execution and the new SupabaseClientInterceptor API.
Docstring Coverage		No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check. Docstring coverage is scoped to functions touched by this diff. Analyzed 0 functions across 0…
Linked Issues check		Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check		Check skipped because no linked issues were found for this pull request.

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Actionable comments posted: 1

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• 🪄 Fix CodeRabbit comments on this PR

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Inline comments:
Review comments at @packages/supabase/lib/src/supabase_client.dart:
- Around line 152-165: Update the interceptor attachment and constructor-failure
cleanup in SupabaseClient: track each interceptor only after `attach` succeeds,
then dispose those attached interceptors in reverse order before calling
`_disposeOwnResources()`. Reuse the existing interceptor-disposal logic where
practical, while preserving normal `dispose()` behavior for all configured
interceptors.

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• Configuration used: Repository: supabase/supabase-flutter/.coderabbit.yaml
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📥 Commits

Reviewing files that changed from the base of the PR and between f026933 and 10e6929.

📒 Files selected for processing (20)

• AGENTS.md
• MIGRATION.md
• packages/postgrest/lib/postgrest.dart
• packages/postgrest/lib/src/postgrest.dart
• packages/postgrest/lib/src/postgrest_typed_builder.dart
• packages/postgrest/lib/src/postgrest_typed_filter_builder.dart
• packages/postgrest/lib/src/postgrest_typed_query_builder.dart
• packages/postgrest/lib/src/postgrest_typed_transform_builder.dart
• packages/postgrest/test/table_executor_test.dart
• packages/postgrest/test/typed_query_test.dart
• packages/supabase/lib/src/supabase_client.dart
• packages/supabase/lib/src/supabase_client_interceptor.dart
• packages/supabase/lib/src/supabase_query_schema.dart
• packages/supabase/lib/src/supabase_typed_query_builder.dart
• packages/supabase/lib/supabase.dart
• packages/supabase/test/client_interceptor_test.dart
• packages/supabase_flutter/lib/src/supabase.dart
• packages/supabase_flutter/test/interceptor_test.dart
• packages/supabase_test/lib/src/test_supabase_client.dart
• sdk-compliance.yaml

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