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📝 WalkthroughWalkthroughThe ChangesTypegen introspection
Priority: ⬇️ Low Estimated code review effort: 4 (Complex) | ~60 minutes Change: Feature Sequence Diagram(s)sequenceDiagram
participant Developer
participant TypegenDriftWorkflow
participant DumpIntrospectionSQL
participant PostgrestTypegen
TypegenDriftWorkflow->>DumpIntrospectionSQL: Render Dart SQL scenarios
TypegenDriftWorkflow->>PostgrestTypegen: Install pinned or latest release
TypegenDriftWorkflow->>PostgrestTypegen: Render matching SQL scenarios
TypegenDriftWorkflow->>TypegenDriftWorkflow: Compare SQL and report differences
TypegenDriftWorkflow-->>Developer: Exit successfully or fail with diff
Suggested reviewers: Merge Risk: 🟡 Moderate · up to Direct database generation can use insecure transport, produce inconsistent metadata for overlapping filters, or fail to compile under an allowed dependency resolution. These issues should be fixed before merge. 🚥 Pre-merge checks | ✅ 4 | ❌ 1❌ Failed checks (1 warning)
✅ Passed checks (4 passed)
Full details: Docstring CoverageExplanation Docstring coverage is 50.00% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 2 functions across 1 files. (33 skipped: 33 unsupported.)
✨ Finishing Touches 💡 1📝 Generate docstrings 💡
🧪 Generate unit tests (beta)
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Tr00d
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Sep 14, 2026
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In @.github/workflows/test.yml:
- Around line 199-204: Update the PostgreSQL readiness loop around docker exec
supabase_typegen_parity so it records whether pg_isready succeeded and
explicitly fails the step after all 30 checks fail. Preserve the existing retry
and sleep behavior, and allow the workflow to continue only when PostgreSQL
becomes ready.
In `@packages/supabase_typegen/bin/supabase_typegen.dart`:
- Line 113: Update the JSON parsing flow around jsonDecode in the
document-loading logic to validate that the decoded value is a non-null
Map<String, dynamic> before assigning it to document. For valid JSON with an
incompatible shape, such as an array or null, return the existing documented
parse error instead of allowing a cast exception to escape.
In `@packages/supabase_typegen/lib/src/introspection/introspect.dart`:
- Line 62: Update the postgres dependency constraint to require at least version
3.5.7 so the Connection.openFromUrl calls in the introspection code are
available; keep the existing API usage unchanged.
- Around line 92-97: Update the schemas collection in the introspection flow to
apply include-over-exclude precedence, matching filterByList and the postgrest
typegen behavior. Change only the schemas filter; preserve the existing
unfiltered types behavior and the system-schema defaults.
In `@packages/supabase_typegen/README.md`:
- Around line 48-49: Update the connection default described in the README so an
absent sslmode uses sslmode=require rather than probing TLS and falling back to
plaintext. Permit plaintext only when the caller explicitly sets
sslmode=disable, and remove the implied libpq-style prefer behavior.
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📒 Files selected for processing (34)
.github/workflows/test.yml.github/workflows/typegen-drift.ymlpackages/supabase_typegen/README.mdpackages/supabase_typegen/bin/supabase_typegen.dartpackages/supabase_typegen/lib/introspection.dartpackages/supabase_typegen/lib/src/introspection/collation.dartpackages/supabase_typegen/lib/src/introspection/introspect.dartpackages/supabase_typegen/lib/src/introspection/local_database_url.dartpackages/supabase_typegen/lib/src/introspection/pg_format.dartpackages/supabase_typegen/lib/src/introspection/queryable.dartpackages/supabase_typegen/lib/src/introspection/relationships.dartpackages/supabase_typegen/lib/src/introspection/sort.dartpackages/supabase_typegen/lib/src/introspection/sql/columns_sql.dartpackages/supabase_typegen/lib/src/introspection/sql/foreign_tables_sql.dartpackages/supabase_typegen/lib/src/introspection/sql/functions_sql.dartpackages/supabase_typegen/lib/src/introspection/sql/helpers.dartpackages/supabase_typegen/lib/src/introspection/sql/materialized_views_sql.dartpackages/supabase_typegen/lib/src/introspection/sql/primary_keys_sql.dartpackages/supabase_typegen/lib/src/introspection/sql/schemas_sql.dartpackages/supabase_typegen/lib/src/introspection/sql/table_relationships_sql.dartpackages/supabase_typegen/lib/src/introspection/sql/tables_sql.dartpackages/supabase_typegen/lib/src/introspection/sql/types_sql.dartpackages/supabase_typegen/lib/src/introspection/sql/views_key_dependencies_sql.dartpackages/supabase_typegen/lib/src/introspection/sql/views_sql.dartpackages/supabase_typegen/lib/src/introspection/ssl_probe_io.dartpackages/supabase_typegen/pubspec.yamlpackages/supabase_typegen/test/introspection/local_database_url_test.dartpackages/supabase_typegen/test/introspection/parity_test.dartpackages/supabase_typegen/test/introspection/pg_format_test.dartpackages/supabase_typegen/test/introspection/relationships_test.dartpackages/supabase_typegen/test/introspection/sort_test.dartpackages/supabase_typegen/test/introspection/sql_test.dartpackages/supabase_typegen/tool/check_introspection_drift.tspackages/supabase_typegen/tool/dump_introspection_sql.dart
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spydon
marked this pull request as draft
September 14, 2026 14:57
spydon
commented
Sep 14, 2026
… and --db-url Ports the introspection of @supabase/postgrest-typegen 0.2.0 to Dart so the GeneratorMetadata document can be produced without the Supabase CLI, which has no Dart path for gen types yet. The document is byte-identical to sortGeneratorMetadata(introspect(pool)) of the TypeScript package, so the parser, goldens and generated code are unchanged, and the stdin mode stays the default for the eventual CLI integration. - --db-url connects to any Postgres; sslmode is honoured the way package:postgres supports it and probed like libpq's prefer without one. - --local resolves DB_URL from supabase status -o env. - --dump-metadata writes the document instead of the generated code. - A parity test seeds a fresh postgres:15 with test/fixtures/seed.sql and compares the introspection with test/fixtures/generator_metadata.json. - tool/check_introspection_drift.ts renders the vendored SQL with the pinned TypeScript builders and fails on any difference; a weekly workflow runs it against the newest release.
…ay with CLI Dart support
- Fail the parity Postgres readiness step instead of running tests against a database that never came up. - Reject stdin documents that are valid JSON but not an object with the parse error and exit code 65 instead of an uncaught cast. - Require postgres 3.5.9, the release whose connection string support the direct connection modes rely on.
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…sdk revision and mirror its cleanup The port now follows supabase/sdk at 0472bafa, the head of the postgrest-typegen cleanup stack, instead of the 0.2.0 npm release: - the SQL builders take the schema filter alone, the types query is a constant and the view definition rewrites are rendered from a table, matching the upstream refactors; - the views query carries is_insert_enabled and is_update_enabled, the columns query reports trigger and rule backed view columns as updatable and treats virtual generated columns as generated, matching the releases after 0.2.0; - introspect no longer re-filters the schemas rows. The drift check fetches the TypeScript builders from GitHub at the pinned revision (--latest compares against main) and the fixture tool reads a local supabase/sdk checkout. The fixture and goldens are regenerated: the join view with an INSTEAD OF INSERT trigger now gets an Insert type.
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Summary
supabase_typegencould only read aGeneratorMetadatadocument on stdin and relied onsupabase gen types --lang dartto produce it, which has not shipped (supabase/cli#6230 was closed and supabase/cli#6404 carries no Dart path). This ports the introspection of@supabase/postgrest-typegento Dart so the tool can produce the document itself:The output is byte-identical to
sortGeneratorMetadata(await introspect(pool))of the TypeScript package at the pinned supabase/sdk revision. Stdin stays the default when no connection option is given, so the eventual CLI integration is untouched.Everything new lives under
lib/src/introspection/,lib/introspection.dart,test/introspection/, the two tool scripts and the drift workflow, so it can be removed as a whole once the CLI ships the Dart path.What is ported
pg-formatliteral escaping, mirroring the trimmed builders of refactor(postgrest-typegen): drop the unused postgres-meta options from the introspection sdk#180 and the table-rendered view definition rewrites of refactor(postgrest-typegen): render the view definition rewrites from a table sdk#179.Array.prototype.sortbeing stable for composite primary keys and tied relationships.localeComparesemantics: the ICU root collation for printable ASCII (punctuation, digits, then letters with case as the last tiebreaker, lower case first), verified against Bun and Node. Non-ASCII code units sort after ASCII by code unit, which deviates from ICU for accented names and only affects collection order.The int8 normalization of
normalize.tshas no Dart counterpart becausepackage:postgresreturns int8 asint; the only value shape that needed adjusting isfloat4(prorows), where integral doubles become integers so1000prints as JavaScript would.Connection handling
--db-urlhonourssslmodethe waypackage:postgressupports it (disable,require,verify-ca,verify-full). Without one the tool sends anSSLRequestprobe first and connects withrequireordisableaccordingly, like libpq'sprefer. The probe exists because lettingpackage:postgresfail the TLS attempt leaks the socket and keeps the process alive after the work is done.--localrunssupabase status -o envand takesDB_URL, so the SQL insupabase/stays the single source of truth for local generation.Verification
test/introspection/parity_test.dart): seeds a freshpostgres:15withtest/fixtures/seed.sqlwhen the database is empty, introspects it unfiltered and restricted topublic, and asserts equality withtest/fixtures/generator_metadata.jsonrecord by record. It also runs the binary and checks--dump-metadatareproduces the fixture byte for byte and--output -reproducestest/goldens/supabase_schema.dart. The test skips unlessSUPABASE_TYPEGEN_PARITY_DATABASE_URLis set;test.ymlstarts the container for thesupabase_typegenmatrix entry.tool/check_introspection_drift.ts): fetches the TypeScript builders of the pinned supabase/sdk revision from GitHub, renders every query for three filter scenarios, and compares withdart run tool/dump_introspection_sql.dart. The newtypegen-drift.ymlruns it on PRs touching the package and weekly against supabase/sdkmainwith--latest, so an upstream SQL change surfaces as a failing scheduled run. Bumping the pin is: run the script with--ref, port the printed diff, regenerate the fixture withtool/regenerate_fixture.ts --source <sdk checkout>, updatepostgrestTypegenRevision.supabase statusparsing.--localagainst the running local stack and the error paths (wrong password, unreachable host, conflicting flags).Notes
0472bafa, the head of the postgrest-typegen cleanup stack (refactor(postgrest-typegen): render the view definition rewrites from a table sdk#179, More filters on Realtime query #180, feat: Accept custom headers and add add X-Client-Info header #181), so the Dart builders mirror the cleaned up upstream ones. That picks up the changes after 0.2.0 as well: the views query carriesis_insert_enabledandis_update_enabled, trigger and rule backed view columns are updatable, and virtual generated columns count as generated. The fixture and goldens are regenerated accordingly; the join view with an INSTEAD OF INSERT trigger now gets aBookSubmissionsInserttype. Once the stack is released, the pin should move to thatpostgrest-typegen-v*tag, which is a one line change.oven-sh/setup-bunis a new third-party action, pinned by SHA like the others in this repo.Closes SDK-1834.
Summary by CodeRabbit
New Features
Documentation