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Decode/Encode to the next level#152

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DZakh wants to merge 97 commits intomainfrom
dz/decode-encode
Open

Decode/Encode to the next level#152
DZakh wants to merge 97 commits intomainfrom
dz/decode-encode

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@DZakh DZakh commented Aug 29, 2025

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DZakh and others added 29 commits January 18, 2026 12:15
* Update Val architecture to clarify compilation-time semantics

Restructure Val documentation to emphasize that val represents a value
at a specific point in time during compilation. Rename 'from' to 'prev'
and reorganize properties to show transformation tracking (code,
validation) as relative to the previous val in the chain.

* Fix Val documentation accuracy

- Val is mutable, reflects specific value type (not immutable snapshot)
- Clarify expected is the schema to build decoder for
- Remove 'built-in' qualifier from validation (not always built-in)

---------

Co-authored-by: Claude <[email protected]>
* Fix hasTransform and isAsync for recursive schemas

- Add hasTransform field to schema type (parallel to isAsync)
- Cache hasTransform in compileDecoder alongside isAsync
- Refactor recursiveDecoder to use optimistic compilation:
  - Start with optimistic assumptions (hasTransform=false, isAsync=false)
  - Set values on def before compiling for inner circular refs to read
  - After compilation, check if actual values match assumptions
  - If mismatched, clear cache and recompile with correct values
- Remove messy isAsyncInternal workaround and FIXME comment
- Update JSON parse code test expectation (no more array/object recreation)

This fixes the TODO about not needing to recreate array/json values.
Recursive schemas without transforms now generate cleaner code.

https://claude.ai/code/session_01J6u8Aw2p2PGXbZUMUEScK1

* Update compiled Sury.res.mjs

https://claude.ai/code/session_01J6u8Aw2p2PGXbZUMUEScK1

* Fix embed of temporary decoder

* Improve recursive decoder

* Final test fixes for recursive improvement

---------

Co-authored-by: Claude <[email protected]>
* Decouple refiner from decoder by storing in refiner field

Instead of baking refiner logic into the decoder via appendRefiner,
store the refiner function in the dedicated `refiner` field on the
internal schema type. The parse function already calls `expected.refiner`
separately after the decoder, so this change requires no parse logic
modifications. Chaining of multiple refiners is handled by composing
the builder functions in the refiner field.

https://claude.ai/code/session_01LPsNZxPJdRczdL94YEHccc

* Change refiner field type from builder to code-returning function

Refiner no longer mutates the val inside itself. Instead of using the
builder type (val => val), the refiner and inputRefiner fields now use
(~input: val, ~selfSchema: internal) => string - the same type that
internalRefine accepts. The parse function calls the refiner and appends
the returned code string to codeAfterValidation. Multiple refiners are
composed by concatenating their code strings.

https://claude.ai/code/session_01LPsNZxPJdRczdL94YEHccc

* Remove ~selfSchema from refiner type and clean up internalRefine

The selfSchema param was unused by all refiners (always ~selfSchema as _)
since it's available via input.expected. Simplified the refiner type to
(~input: val) => string. Moved the switch outside of mut.refiner
assignment in internalRefine for cleaner control flow.

https://claude.ai/code/session_01LPsNZxPJdRczdL94YEHccc

* Rename refiner arg to makeRefiner and refinerCode to refiner

https://claude.ai/code/session_01LPsNZxPJdRczdL94YEHccc

* Remove unused appendRefiner fn

---------

Co-authored-by: Claude <[email protected]>
)

* Update test assertions for logically correct compiled code snapshot changes

8 snapshot assertions updated across 6 test files to match the new
compiled output from the val architecture refactoring:
- S_test.ts: Fix error message for recursive self-as-transform-target
- S_refine_test.res: Update parse code snapshot (object construction before validation)
- S_object_test.res: Update parse + reverse convert snapshots
- Example_test.res: Update serialize code snapshot (unused variable read)
- S_recursive_test.res: Update 2 ParseAsync snapshots (new recursive ref format)
- S_union_test.res: Update json-rpc ReverseConvert (3x→2x union duplication)

https://claude.ai/code/session_01Uax71CbmZTwTgfRjWVgcLu

* Revert S_test.ts message change (was correct before) and add FIXME for union v5 double conversion

The "Recursive with self as transform target" test correctly expects
"from string to Node[]" — the library now incorrectly says "from Node".
Added FIXME noting v5 is still converted twice in json-rpc ReverseConvert.

https://claude.ai/code/session_01Uax71CbmZTwTgfRjWVgcLu

* Update json-rpc ReverseConvert assertion to expect single v5 conversion

The nested error union should only need one pass to convert v5, not two.
The test will fail until the library is fixed.

https://claude.ai/code/session_01Uax71CbmZTwTgfRjWVgcLu

---------

Co-authored-by: Claude <[email protected]>
Instead of hardcoding selfReverse=false, check if the item schema is
self-reversing by comparing Dict.getUnsafe(reversedKey) === itemInternal.
Also rename reverseKey to reversedKey.

https://claude.ai/code/session_01FSGU4DhYDjWQu2n3bE3FQh

Co-authored-by: Claude <[email protected]>
* Change S.refine JS API from callback-based to boolean-returning signature

S.refine now takes (value) => boolean check function with optional
{ error, path } options instead of (value, s) => void with s.fail().

https://claude.ai/code/session_013mvoLw6QfNz5DJAUL1jV7W

* Update JS docs and add ideas.md with changelog for S.refine change

https://claude.ai/code/session_013mvoLw6QfNz5DJAUL1jV7W

* Inline js_refine check via internalRefine, remove tracked S_test.js, update IDEAS.md

- Refactored js_refine to use internalRefine directly, generating inline
  validation code instead of going through effectCtx
- Removed S_test.js from git (generated file, already gitignored)
- Moved changelog entry from ideas.md to existing IDEAS.md

https://claude.ai/code/session_013mvoLw6QfNz5DJAUL1jV7W

* Add test for S.refine with path option

https://claude.ai/code/session_013mvoLw6QfNz5DJAUL1jV7W

* Improve S.refine docs with examples following Zod-style documentation

Added sections for custom error messages, custom error paths, and
chaining refinements with clear code examples.

https://claude.ai/code/session_013mvoLw6QfNz5DJAUL1jV7W

* Rename S.asyncParserRefine to S.asyncDecoderAssert

https://claude.ai/code/session_013mvoLw6QfNz5DJAUL1jV7W

* Remove EffectCtx from asyncDecoderAssert in favor of throwing directly

- Renamed refiner param to assertFn, removed s (EffectCtx) argument
- Removed EffectCtx type (no longer used anywhere)
- Restored comment on .with() overload
- Updated tests, docs, and changelog

https://claude.ai/code/session_013mvoLw6QfNz5DJAUL1jV7W

* Fix async docs wording and simplify async test assertions

https://claude.ai/code/session_013mvoLw6QfNz5DJAUL1jV7W

* Wrap asyncDecoderAssert errors as custom SuryError

Thrown errors are caught and re-thrown as SuryError with code "custom",
preserving the original error message. Already-SuryErrors are re-thrown
as-is.

https://claude.ai/code/session_013mvoLw6QfNz5DJAUL1jV7W

* Revert asyncDecoderAssert custom error wrapping, keep it simple

Let transform handle error wrapping naturally.

https://claude.ai/code/session_013mvoLw6QfNz5DJAUL1jV7W

---------

Co-authored-by: Claude <[email protected]>
* Update S.refine ReScript API from callback-based to boolean-returning

Changed the public ReScript API for S.refine from the old callback-based
style `(t<'value>, s<'value> => 'value => unit) => t<'value>` to the new
boolean-returning style `(t<'value>, 'value => bool, ~error: string=?,
~path: array<string>=?) => t<'value>`.

This aligns with the TypeScript API change in d2d8dd4, using labeled
arguments (~error, ~path) instead of a JS-style options object.

Updated: S.resi, Sury.resi, Sury.res implementation, IDEAS.md, docs,
and all test files using the refine API. Also updated compiled code
snapshots to match actual output.

https://claude.ai/code/session_01FL2DmWjTLoMgTvdE43KG9z

* Revert assertCompiledCode expectations to document correct behavior

Keep the original expected compiled code in tests where the actual
generated code is broken (pre-existing bug with refine on object schemas
and union schemas). The tests fail, documenting what the code generator
should produce once the underlying bugs are fixed.

https://claude.ai/code/session_01FL2DmWjTLoMgTvdE43KG9z

---------

Co-authored-by: Claude <[email protected]>
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