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feat(postgrest): leave computed fields out of select('*') and resolve no-argument rpc overloads for postgrest-typegen output - #2730

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@spydon spydon commented Sep 30, 2026 •

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Description

What changed?

Two type-level fixes for the types @supabase/postgrest-typegen generates, which the CLI uses for gen types from 2.118.0.

Computed fields and select('*')

  • GenericTable and GenericView gain an optional ComputedFields: string, the names of the Row keys that are computed fields. When a relation declares it, select('*') and relation(*) omit exactly those keys, as PostgREST does. The generator will emit it in a follow-up (supabase/sdk).
  • Without the key, the computed fields are still inferred from Functions, and that inference is fixed: it accepts a parameter with any name (get_messages(channel_row channels)), not only the unnamed Args: { '': Row }; it checks each overload of an overloaded function; and it matches the argument on its keys, so a Row whose column types were overridden with MergeDeep keeps its computed fields. Args: never, Args: Record<PropertyKey, never>, an optional argument and several arguments never match.
  • An embed through a foreign key column name, like user_profiles.select('username(*)'), resolved the computed fields against the column name and so never omitted them. The resolved relationship now carries the embedded relation's own name, which the embed result uses.
  • A computed field selected by name, select('username, get_user_profile'), keeps resolving from Row.

No-argument rpc calls

Calling rpc('fn') without arguments now also matches an overload typed Args: Record<PropertyKey, never>, not only one typed Args: never. GetRpcFunctionFilterBuilderByArgs tries Args: never first, then Args: Record<PropertyKey, never>, and only then falls back to the last overload as before.

The synced copies in supabase-js/src/lib/rest/types/common/ are regenerated with pnpm codegen.

Why was this change needed?

postgrest-typegen's output differs from postgres-meta's in two ways that matter here:

Found by regenerating postgrest-js's test types with CLI 2.118.0 in #2729, where 64 type assertions fail. Removing computed relationships from Row in the generator (supabase/sdk#242) was closed because PostgREST does return them when selected as a plain column.

Examples

Tables: {
  channels: {
    Row: { id: number; slug: string | null; get_messages: { ... } | null }
    ComputedFields: 'get_messages'  // emitted by the generator, optional
    ...
  }
}
Functions: {
  get_messages: { Args: { channel_row: Database['public']['Tables']['channels']['Row'] }; ... }
}

const { data } = await postgrest.from('channels').select('*')
// before: { id: number; slug: string | null; get_messages: { ... } | null }[]
// after:  { id: number; slug: string | null }[]
// (also without ComputedFields, through the fixed inference)

const { data } = await postgrest.from('channels').select('slug, get_messages')
// unchanged: { slug: string | null; get_messages: { ... } | null }[]
Functions: {
  overloaded:
    | { Args: Record<PropertyKey, never>; Returns: number }
    | { Args: { a: string }; Returns: string }
}

const { data } = await postgrest.rpc('overloaded')
// before: string | null (the last overload)
// after:  number | null

Testing

  • New test/select-query-parser/computed-fields.test-d.ts: for both a schema without ComputedFields (inferred) and one with it (declared), covers an unnamed parameter, a named parameter, an overload shared by a table and a view, a column named like a zero-argument, optional-argument or two-argument function, a MergeDeep column override, ComputedFields: never resolving * to Row itself, a column named like a function taking the row (declared path), * inside an embed by relation name and by foreign key column name, a computed field selected by name, and a computed relationship embedded with parentheses.
  • New test/rpc-no-args.test-d.ts covers overloaded functions with a zero-argument overload in both spellings, an overloaded call with arguments, and a function that isn't overloaded.
  • test:types:ci (TypeScript 4.7, 5.5 and 6.0): 33 of 33 files pass with the committed types.generated.ts, so existing generated types are unaffected. type-check, type-check:test, build and codegen:check pass.
  • With types regenerated by CLI 2.118.0 (from chore(supabase): bump supabase cli to 2.120.0 #2729), 46 of the 64 errors are gone. The 18 that remain are not select('*') errors: 16 in advanced_rpc.test.ts where an rpc call passes a row argument (Args: { user_row: Row }) and Row now also requires the computed fields (12 argument errors and 4 result types that follow from the argument not matching an overload), and 2 fixture-dependent assertions in index.test-d.ts and select-query-parser/types.test-d.ts that spell out users' Row. Those are for chore(supabase): bump supabase cli to 2.120.0 #2729 and the generator follow-up.

Breaking changes

  • This PR contains no breaking changes

ComputedFields is optional. Types that already spelled out a computed field's function with Args: { '': Row } resolve * as before. A no-argument call to an overloaded function whose zero-argument overload is typed Args: Record<PropertyKey, never> now resolves to that overload instead of the last one.

@spydon
spydon requested review from a team as code owners September 30, 2026 12:43
@github-actions github-actions Bot added the postgrest-js Related to the postgrest-js library. label Sep 30, 2026
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📝 Summary

Summary by CodeRabbit

  • Bug Fixes
    • Improved TypeScript return-type selection for RPC functions with overloaded signatures, including functions that take no arguments.
    • Preserved compatibility when exact argument matching is unavailable, so existing RPC calls continue to receive an appropriate return type.
    • Added type-checking coverage for zero-argument and argument-bearing overloads, as well as functions without overloads.

Walkthrough

The RPC type utilities now prefer an exact argument match, then check for a zero-argument definition typed as Record<PropertyKey, never>. If neither match exists, they use the last function definition. New type tests cover overloaded functions with zero-argument definitions typed as never or an empty record, an argument-bearing overload, and a single function definition.


Priority: ⬇️ Low

Change: Bug fix

Merge Risk

Merge Risk: ⚪ Minimal · up to c9f04

No actionable merge-blocking issue is established for this PR. It is mergeable after normal checks.

Security Architecture Review

Security architecture risk: ⚪ Minimal · up to 49930

The change corrects inferred return types for existing no-argument RPC calls. It does not introduce new request destinations, permissions, or runtime access paths. No introduced or worsened security concern was identified.

Retained concerns
No architecture-level concerns identified.

Security review details

Security Blast Radius

  • inferred — The demonstrated exposure change is limited to compile-time RPC result inference in the two client packages. Omitting arguments was already accepted by the public caller, so the new selector does not itself make another server function reachable or grant additional tenant, database, or service authority.

Trust Boundaries and Controls

  • observed — The caller's function-name and argument constraints are compile-time checks. At runtime, the caller constructs an RPC URL and carries client headers, schema, and fetch configuration into the request builder; the changed selector adds no runtime security enforcement. Server-side authorization was outside the inspected source scope.



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commit: e9c4fa2

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Coverage Status

coverage: 82.14%. remained the same — lukasklingsbo/postgrest-no-arg-rpc-overloads into master

@spydon
spydon marked this pull request as draft September 30, 2026 13:10
@spydon spydon changed the title fix(postgrest): resolve a no-argument rpc call to an overload typed Args: Record<PropertyKey, never> feat(postgrest): leave computed fields out of select('*') and resolve no-argument rpc overloads for postgrest-typegen output Sep 30, 2026
spydon added a commit to supabase/sdk that referenced this pull request Sep 30, 2026
… named row parameters without them (#243)

## What

Three changes to the TypeScript generator, all in
`src/generation/typescript.ts`:

1. **Every table and view declares `ComputedFields` next to `Row`**: the
names of the `Row` keys that are functions taking the row, or `never`
when there are none.

   ```ts
   channels: {
Row: { id: number; slug: string | null; get_messages: { ... } | null }
     ComputedFields: "get_messages"
     Insert: { ... }
     Update: { ... }
     Relationships: [...]
   }
   ```

2. **A function named like one of the relation's columns is left out of
`Row`** (and of `ComputedFields`). PostgREST resolves the name to the
column, so the function is not selectable through it, and emitting both
declared the key twice, which is a compile error in the generated file.

3. **A named row parameter is typed without the computed fields**:
`Args: { user_row: Omit<Database["public"]["Tables"]["users"]["Row"],
Database["public"]["Tables"]["users"]["ComputedFields"]> }`. An unnamed
parameter keeps the plain `Row` reference.

## Why

PostgREST never returns computed fields for `select('*')`, but they are
in `Row` because they are selectable by name. postgrest-js decides which
`Row` keys to leave out of `*` by inferring them from `Functions`, and
that inference cannot see through a `Row` whose column types were
overridden with `MergeDeep`, nor tell a computed field from a same-named
column. The generator is the only side that knows which keys are which,
so it now says so. supabase/supabase-js#2730 reads `ComputedFields` when
present and falls back to the improved inference otherwise.

The row parameter change fixes a consequence of computed fields being in
`Row`: `rpc('get_messages', { channel_row: { id, data, slug } })` was
rejected because the argument type required every `Row` key, computed
fields included. PostgREST accepts a partial object for a row-typed
argument and fills the missing keys with NULL, and it never reads
computed fields from the input. Unnamed parameters are left as they were
because older postgrest-js versions recognise a computed field by `Args:
{ '': Row }` matching the relation's `Row` exactly, and an `Omit` would
break that for the relations where it matters; they never recognised
named parameters, so nothing is lost there.

Closing #242, which removed computed relationships from
`Row` instead, was the wrong fix: PostgREST does return them when
selected as a plain column. Design and measurements in SDK-1986.

## Output change

**TypeScript only.** Go, Python and Swift are untouched. For every
consumer regenerating types:

- Each table and view gains a `ComputedFields` key. postgrest-js
versions without supabase/supabase-js#2730 ignore it, since
`GenericTable` is matched structurally.
- Named row parameters of functions become `Omit<Row, ComputedFields>`.
Calls that already pass the row's columns keep compiling; calls that
passed the computed fields as `null` to satisfy the old type get an
excess property error and drop them.
- A function named like a column of the relation it takes disappears
from that relation's `Row`. The previous output did not compile.

In the parity golden (`test/parity/expected/typescript.txt`), that is 14
relations gaining `ComputedFields: never`, 9 gaining a union, and 14
named row parameters gaining the `Omit`. Nothing else moves.

## Testing

- New unit tests: `ComputedFields` on a table with named and unnamed
computed fields, on a table without any, and on a view; the named
parameter `Omit` and the unnamed plain reference (inline snapshot); a
function named like a column staying out of `Row` and `ComputedFields`
while remaining callable. Three existing assertions on named row
parameters updated to the `Omit` shape.
- `bun run test`: 145 pass, including the regenerated TypeScript parity
golden. `check-types`, `check-types:consumer`, `format-and-lint`, `knip`
and `build` pass.
- End to end against postgrest-js: generated its test types from its
fixture database with this branch (`includedSchemas: ["public",
"personal"]`, `detectOneToOneRelationships: true`, as the CLI passes
them) and ran `test:types` with supabase/supabase-js#2730 checked out.
The CLI 2.118.0 output fails 64 assertions on `main`; with #2730 alone
18 remain; with this branch as well, 4 remain, all of them expectations
in postgrest-js's tests that spell out the fixture's `users` and
`messages` rows and get updated in supabase/supabase-js#2729: a
`@ts-expect-error` message that now prints the `Omit`, two assertions
that expect `users` to have no computed fields, and one
`rpc('blurb_message', { '': ... })` call with an unnamed row parameter,
which keeps the plain `Row` by design and so now also asks for
`messages`' named computed field.
therickys93 pushed a commit to therickys93/cli that referenced this pull request Oct 5, 2026
## Summary

**TL;DR:** `gen types` bundles `@supabase/typegen@0.2.2`, which pins
`@supabase/postgrest-typegen@0.4.0`. TypeScript output gains a
`ComputedFields` key on every table and view, and functions taking a row
through a named parameter are typed without the computed fields. Go,
Python, Swift and Dart output are unchanged.

## Why

postgrest-js leaves computed fields (functions taking the relation's
row) out of `select('*')`, as PostgREST does, and used to infer which
`Row` keys those are from `Functions`. That inference misses named
parameters, which the generator has emitted into `Row` since CLI
2.118.0, so `select('*')` on such a relation was typed with keys
PostgREST never returns. postgrest-typegen 0.4.0 declares them instead
(supabase/sdk#243), and postgrest-js reads the declaration in
supabase/supabase-js#2730. Design and measurements in SDK-1986.

## What changed

- Bump `@supabase/typegen` from `0.2.1` to `0.2.2` in
`apps/cli/package.json`; the lockfile moves
`@supabase/postgrest-typegen` from `0.3.1` to `0.4.0` and `arktype` from
`2.2.3` to `2.2.5` (with `@ark/schema`, `@ark/util` and `arkregex`),
which 0.4.0 pins exactly.
- `pnpm-workspace.yaml`: the `minimumReleaseAgeExclude` entries for the
two typegen packages move to the new versions, and the four arktype
packages are added. They were published on 2026-09-24 and clear the
7-day window on 2026-10-01, after which their entries can go.

### Output change for `gen types typescript`

```ts
channels: {
  Row: { id: number; slug: string | null; get_messages: { ... } | null }
  ComputedFields: "get_messages"        // new; `never` when there are none
  Insert: { ... }
  Update: { ... }
  Relationships: [...]
}
Functions: {
  get_messages: {
    Args: {
      channel_row: Omit<                 // was the plain Row reference
        Database["public"]["Tables"]["channels"]["Row"],
        Database["public"]["Tables"]["channels"]["ComputedFields"]
      >
    }
    ...
  }
}
```

A function named like a column of the relation it takes is no longer
added to that relation's `Row`; the previous output declared the key
twice and did not compile. Unnamed row parameters keep the plain `Row`
reference. Older postgrest-js versions ignore `ComputedFields`.

## Linked issue

SDK-1986 (Linear). No GitHub issue.

- [x] The linked issue is **open** and carries the
`open-for-contribution` label (or I'm a Supabase maintainer).

## Checklist

- [x] The PR title follows [Conventional
Commits](https://www.conventionalcommits.org/) (e.g. `fix(cli): …`).
- [x] Tests added or updated for the change. No test in this repository
asserts on generated TypeScript output; the generator's own tests and
parity golden cover it in supabase/sdk#243.
- [x] `pnpm types:check` passes for `apps/cli`. `gen/types` unit tests:
34 pass, `types.layers.unit.test.ts` does not load locally on my bun
(`No such built-in module: node:sqlite`), unrelated to this change.
`gen/types` integration tests: 94 pass.
@spydon
spydon marked this pull request as ready for review October 8, 2026 10:02
@spydon
spydon added this pull request to stack #2752 October 8, 2026 10:04

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Actionable comments posted: 1


  • 🪄 Fix CodeRabbit comments on this PR
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Inline comments:
Review comments at @packages/core/postgrest-js/src/select-query-parser/utils.ts:
- Around line 745-758: Update GetComputedFields to recognize optional
ComputedFields declarations and return their declared field names, so wildcard
results exclude them even when no matching function can be inferred. Preserve
InferredComputedFields as the fallback only when the relation has no
ComputedFields key.

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Comment thread packages/core/postgrest-js/src/select-query-parser/utils.ts
spydon added 3 commits October 9, 2026 19:57
…lect('*')

Tables and views may declare `ComputedFields`, the names of the `Row` keys
that are computed fields, next to `Row`. `select('*')` and `relation(*)`
omit them, as PostgREST does. Without the key, the computed fields are
inferred from `Functions` as before, but the inference now accepts a
parameter with any name, one overload of an overloaded function, and a
`Row` whose column types were overridden, by matching the argument on its
keys.

An embed through a foreign key column name, like `username(*)`, resolved
the computed fields against the column name and so never omitted them.
The resolved relationship now carries the embedded relation's own name.
@mandarini
mandarini force-pushed the lukasklingsbo/postgrest-no-arg-rpc-overloads branch from c9f049d to e9c4fa2 Compare October 9, 2026 16:57
@mandarini
mandarini merged commit b9753a1 into master Oct 9, 2026
31 checks passed
@mandarini
mandarini deleted the lukasklingsbo/postgrest-no-arg-rpc-overloads branch October 9, 2026 17:09
spydon added a commit to supabase/sdk that referenced this pull request Oct 12, 2026
…l request's generator (#260)

## What changed

A new `postgrest-js type tests` job in `postgrest-typegen-validate.yml`.
On every pull request that touches `packages/postgrest-typegen`, it:

1. Checks out supabase-js at `SUPABASE_JS_REF` and installs it with
pnpm.
2. Starts the postgrest-js fixture database with `supabase --workdir
packages/core/postgrest-js/test db start`, which applies the fixture
migrations and seed. Only the database is started, since generation and
the type tests need nothing else.
3. Writes `test/types.generated.ts` with this pull request's generator
through the new `bun run generate:postgrest-js-types <database-url>
<output-file>`. The script uses the options `supabase gen types
typescript --local` uses: schemas `public,personal`,
`sortGeneratorMetadata`, one-to-one detection on, `public` as the
default schema, and no formatting.
4. Applies the same post-processing as supabase-js's
`scripts/generate-postgrest-types.js`: `update-json-type.js`, then
Prettier.
5. Runs postgrest-js's `test:types:ci`, which is tstyche over TypeScript
4.7, 5.5 and 6.0.

The generated file is never diffed against the committed one. Its output
is allowed to change, and the hand-written assertions in supabase-js
decide whether it is still correct.

`types.generated-with-options-postgrest14.ts` needs no generation step:
it is a hand-written wrapper that imports `types.generated.ts` and adds
`PostgrestVersion: '14.0'`, so it is covered through the main file.

The README documents the job, how to run it locally, and that it covers
TypeScript only. Go, Python and Swift findings stay with those
generators' unit tests and move with them under SDK-1641.

## Why

Resolves SDK-1736. postgrest-js's type tests only ever ran against a
pinned generator, and nothing ran them when the generator changed. The
parity goldens cannot catch this kind of regression, since they are
regenerated in the same change that breaks them (PGMETA-120).

## Before this leaves draft

pnpm is installed through npm from supabase-js's `packageManager` field,
because `pnpm/action-setup` is not on this repository's actions
allowlist.

`SUPABASE_JS_REF` points at `lukasklingsbo/sdk-1735-playbook-type-cases`
(the SDK-1735 pull request, stacked on supabase/supabase-js#2730).
supabase-js `master` does not pass against the current generator yet:
with this branch's output, `master`'s type tests fail with 4 errors in 3
files, all caused by the computed field changes that
supabase/supabase-js#2730 handles. Set it back to `master` once those
pull requests merge.

Making this job a required check is a branch protection setting, to be
done after merge.

## Verification

Run locally against the fixture database from
`lukasklingsbo/sdk-1735-playbook-type-cases`, with the same steps as the
job:

- **Current generator:** 102 of 102 test files pass across all 3
TypeScript targets.
- **Deliberately broken generator**, every table `Row` column emitted as
nullable: 45 of 102 test files fail across all 3 targets, with 390
errors. So the job can fail.
- **Zero-argument `Args` reverted to `never`:** all 102 still pass. That
is expected, since supabase/supabase-js#2730 makes postgrest-js accept
both `never` and `Record<PropertyKey, never>`. This regression is not
caught by type inference at all.

`bun run format-and-lint`, `check-types`, `check-types:consumer`, `knip`
and `test` (145 pass) all pass. The job passes in GitHub Actions on this
pull request (102 of 102 test files).
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