fix(transformers): respect additionalProperties when generating object map transforms by codercms · Pull Request #3409

fix(transformers): respect additionalProperties when generating object map transforms by codercms · Pull Request #3409 · hey-api/openapi-ts

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transformers plugin now handles additionalProperties in object schemas
Applies transforms to map values from additionalProperties while skipping declared properties
Adds regression test fixture for transformers-additional-properties

P.S. Generated code could be improved by using something like:

for (const key of Object.keys(data) {
     data[key] = transformFn(data[key]);
}

But I didn't found a for-loop builder

…t map transforms

* `transformers` plugin now handles `additionalProperties` in object schemas
* Applies transforms to map values from `additionalProperties` while skipping declared properties
* Adds regression test fixture for `transformers-additional-properties`

dosubot bot added size:XXL

This PR changes 1000+ lines, ignoring generated files.

bug 🔥

Broken or incorrect behavior.

labels

Feb 17, 2026

Codecov Report

❌ Patch coverage is 0% with 12 lines in your changes missing coverage. Please review.
✅ Project coverage is 38.88%. Comparing base (5ae69ba) to head (4de44fc).
⚠️ Report is 292 commits behind head on main.

Files with missing lines	Patch %	Lines
...api-ts/src/plugins/@hey-api/transformers/plugin.ts	0.00%	8 Missing and 4 partials ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3409      +/-   ##
==========================================
- Coverage   38.91%   38.88%   -0.03%     
==========================================
  Files         473      473              
  Lines       17287    17299      +12     
  Branches     5210     5214       +4     
==========================================
  Hits         6727     6727              
- Misses       8480     8488       +8     
- Partials     2080     2084       +4

Flag	Coverage Δ
unittests	`38.88% <0.00%> (-0.03%)`	⬇️

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@hey-api/codegen-core

npm i https://pkg.pr.new/hey-api/openapi-ts/@hey-api/codegen-core@3409

@hey-api/json-schema-ref-parser

npm i https://pkg.pr.new/hey-api/openapi-ts/@hey-api/json-schema-ref-parser@3409

@hey-api/nuxt

npm i https://pkg.pr.new/hey-api/openapi-ts/@hey-api/nuxt@3409

@hey-api/openapi-ts

npm i https://pkg.pr.new/hey-api/openapi-ts/@hey-api/openapi-ts@3409

@hey-api/shared

npm i https://pkg.pr.new/hey-api/openapi-ts/@hey-api/shared@3409

@hey-api/types

npm i https://pkg.pr.new/hey-api/openapi-ts/@hey-api/types@3409

@hey-api/vite-plugin

npm i https://pkg.pr.new/hey-api/openapi-ts/@hey-api/vite-plugin@3409

commit: 4de44fc

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