[build-utils] Extract deserialization utils by healeycodes · Pull Request #15927 · vercel/vercel

healeycodes · 2026-04-13T13:40:46Z

Extract existing deserialization util functions into build-utils so they can be called in multiple places.

These funcs will be implicitly tested via integration tests in my next PR which introduces functions that call these.

changeset-bot · 2026-04-13T13:40:51Z

🦋 Changeset detected

Latest commit: fafdd11

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 16 packages

Name	Type
@vercel/build-utils	Patch
@vercel/backends	Patch
vercel	Patch
@vercel/client	Patch
@vercel/elysia	Patch
@vercel/express	Patch
@vercel/fastify	Patch
@vercel/fs-detectors	Patch
@vercel/gatsby-plugin-vercel-builder	Patch
@vercel/h3	Patch
@vercel/hono	Patch
@vercel/koa	Patch
@vercel/nestjs	Patch
@vercel/node	Patch
@vercel/static-build	Patch
@vercel/cervel	Patch

Not sure what this means? Click here to learn what changesets are.

Click here if you're a maintainer who wants to add another changeset to this PR

vercel · 2026-04-13T13:42:43Z

Low Risk — New utility functions extracted to shared package — no existing behavior modified.

.changeset/slow-snails-hang.md: patch changeset for build-utils
packages/build-utils/src/deserialize/*.ts: new utility functions for directory scanning, file hydration, JSON reading, version validation
packages/build-utils/src/index.ts: exports new deserialization utilities

^{Assessed at fafdd11.}

github-actions · 2026-04-13T13:43:19Z

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github-actions · 2026-04-13T13:44:48Z

🧪 Unit Test Strategy

Comparing: c729aaa → fafdd11 (view diff)

Strategy: Code changed outside of a package - running all unit tests

⚠️ All unit tests will run because global code changes could impact all packages.

Affected packages - 40 (100%)

@vercel-internals/get-package-json
@vercel/backends
@vercel/build-utils
@vercel/cervel
@vercel/cli-auth
@vercel/client
@vercel/config
@vercel/detect-agent
@vercel/edge
@vercel/elysia
@vercel/error-utils
@vercel/express
@vercel/fastify
@vercel/firewall
@vercel/frameworks
@vercel/fs-detectors
@vercel/functions
@vercel/gatsby-plugin-vercel-builder
@vercel/go
@vercel/h3
@vercel/hono
@vercel/hydrogen
@vercel/koa
@vercel/nestjs
@vercel/next
@vercel/node
@vercel/oidc
@vercel/oidc-aws-credentials-provider
@vercel/python
@vercel/python-analysis
@vercel/redwood
@vercel/related-projects
@vercel/remix-builder
@vercel/routing-utils
@vercel/ruby
@vercel/rust
@vercel/static-build
@vercel/static-config
examples
vercel

Results

Unit tests: All affected packages will run unit tests
E2E tests: Running in parallel via E2E Tests workflow
Type checks: All affected packages will run type checks

This comment is automatically generated based on the affected testing strategy

This PR was opened by the [Changesets release](https://github.com/changesets/action) GitHub action. When you're ready to do a release, you can merge this and the packages will be published to npm automatically. If you're not ready to do a release yet, that's fine, whenever you add more changesets to main, this PR will be updated. # Releases ## @vercel/build-utils@13.15.0 ### Minor Changes - [services] allow multiple v2beta triggers for a single Lambda when config is coming from services ([#15890](#15890)) ### Patch Changes - Add deserialization utilities ([#15927](#15927)) ## @vercel/fs-detectors@5.16.0 ### Minor Changes - Parse python module:variable entrypoint notation in experimentalServices for all service types. ([#15844](#15844)) ### Patch Changes - Updated dependencies \[[`4e62f6c2204dd148643f86f140f0ae7995778017`](4e62f6c), [`42a70e1e6318615bd420933f9cc978bed3a43936`](42a70e1)]: - @vercel/build-utils@13.15.0 ## @vercel/python@6.31.0 ### Minor Changes - Parse python module:variable entrypoint notation in experimentalServices for all service types. ([#15844](#15844)) ### Patch Changes - [python] set the `UV_PROJECT_ENVIRONMENT` and `UV_NO_DEV` env vars so that custom `installCommand` and `buildCommand` commands can be called without the `--active` and `--no-dev` flags ([#15715](#15715)) ## @vercel/backends@0.0.60 ### Patch Changes - Include the entrypoint path in the build complete log message. ([#15914](#15914)) - Updated dependencies \[[`4e62f6c2204dd148643f86f140f0ae7995778017`](4e62f6c), [`42a70e1e6318615bd420933f9cc978bed3a43936`](42a70e1)]: - @vercel/build-utils@13.15.0 ## @vercel/cervel@0.0.47 ### Patch Changes - Updated dependencies \[[`8b77cdcd71ba645df4eed52cdccde9a2cbb913f8`](8b77cdc)]: - @vercel/backends@0.0.60 ## vercel@51.2.1 ### Patch Changes - Add `ai-gateway api-keys create` command for creating AI Gateway API keys with optional quota limits ([#15744](#15744)) - Improve `vercel blob list-stores` with `--json` and `--no-projects`, exclude non-blob stores when the API returns a `type` field, and show a richer table for non-TTY output while keeping linked-project filtering, `--all`, and interactive store selection on TTY. ([#14653](#14653)) - Add a `project rename` command to rename projects from the CLI. ([#15918](#15918)) - Updated dependencies \[[`8b77cdcd71ba645df4eed52cdccde9a2cbb913f8`](8b77cdc), [`2d7d14db1c6448f716d1ccc30844b43f47e8e6ee`](2d7d14d), [`d731f1b69030ddcaa0b7f4f1854f79ea92671b1e`](d731f1b), [`4e62f6c2204dd148643f86f140f0ae7995778017`](4e62f6c), [`45c8d4f54cc831695375794964a29145860fa45b`](45c8d4f), [`42a70e1e6318615bd420933f9cc978bed3a43936`](42a70e1)]: - @vercel/backends@0.0.60 - @vercel/python@6.31.0 - @vercel/next@4.16.7 - @vercel/build-utils@13.15.0 - @vercel/elysia@0.1.63 - @vercel/express@0.1.73 - @vercel/fastify@0.1.66 - @vercel/go@3.5.0 - @vercel/h3@0.1.72 - @vercel/hono@0.2.66 - @vercel/hydrogen@1.3.6 - @vercel/koa@0.1.46 - @vercel/nestjs@0.2.67 - @vercel/node@5.7.5 - @vercel/redwood@2.4.12 - @vercel/remix-builder@5.7.2 - @vercel/ruby@2.3.2 - @vercel/rust@1.1.0 - @vercel/static-build@2.9.13 ## @vercel/client@17.3.2 ### Patch Changes - Updated dependencies \[[`4e62f6c2204dd148643f86f140f0ae7995778017`](4e62f6c), [`42a70e1e6318615bd420933f9cc978bed3a43936`](42a70e1)]: - @vercel/build-utils@13.15.0 ## @vercel/elysia@0.1.63 ### Patch Changes - Updated dependencies \[]: - @vercel/node@5.7.5 ## @vercel/express@0.1.73 ### Patch Changes - Updated dependencies \[]: - @vercel/cervel@0.0.47 - @vercel/node@5.7.5 ## @vercel/fastify@0.1.66 ### Patch Changes - Updated dependencies \[]: - @vercel/node@5.7.5 ## @vercel/gatsby-plugin-vercel-builder@2.1.13 ### Patch Changes - Updated dependencies \[[`4e62f6c2204dd148643f86f140f0ae7995778017`](4e62f6c), [`42a70e1e6318615bd420933f9cc978bed3a43936`](42a70e1)]: - @vercel/build-utils@13.15.0 ## @vercel/h3@0.1.72 ### Patch Changes - Updated dependencies \[]: - @vercel/node@5.7.5 ## @vercel/hono@0.2.66 ### Patch Changes - Updated dependencies \[]: - @vercel/node@5.7.5 ## @vercel/koa@0.1.46 ### Patch Changes - Updated dependencies \[]: - @vercel/node@5.7.5 ## @vercel/nestjs@0.2.67 ### Patch Changes - Updated dependencies \[]: - @vercel/node@5.7.5 ## @vercel/next@4.16.7 ### Patch Changes - Update to latest Next.js adapter ([#15456](#15456)) ## @vercel/node@5.7.5 ### Patch Changes - Updated dependencies \[[`4e62f6c2204dd148643f86f140f0ae7995778017`](4e62f6c), [`42a70e1e6318615bd420933f9cc978bed3a43936`](42a70e1)]: - @vercel/build-utils@13.15.0 ## @vercel/static-build@2.9.13 ### Patch Changes - Updated dependencies \[]: - @vercel/gatsby-plugin-vercel-builder@2.1.13 Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>

Building on previous PRs: - #15927 - #15961 - #16002 We are extracting the core `deserialize-build-output.ts` file here. This is following refactor efforts in the existing caller codebases to make this extraction simpler. After shipping this extraction, we'll delete the duplicated code and import `deserializeBuildOutput` from this PR. Doing this should introduce zero semantic changes for those callers. Note: callers must inject their own `groupLambdas` strategy. Note2: some existing TODO comments have been left in-place as code documentation.

[build-utils] Extract deserialization utils

fafdd11

healeycodes requested a review from ofhouse April 13, 2026 13:40

healeycodes requested a review from a team as a code owner April 13, 2026 13:40

healeycodes enabled auto-merge (squash) April 13, 2026 13:40

vercel Bot deployed to Preview April 13, 2026 13:43 View deployment

healeycodes requested a review from Melkeydev April 13, 2026 16:14

Melkeydev approved these changes Apr 13, 2026

View reviewed changes

healeycodes merged commit 42a70e1 into main Apr 14, 2026
254 of 257 checks passed

healeycodes deleted the deserialize-utils branch April 14, 2026 05:24

vercel-cli-release-bot mentioned this pull request Apr 14, 2026

Version Packages #15936

Merged

healeycodes mentioned this pull request Apr 20, 2026

[build-utils] Extract main deserialize-build-output file #16048

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[build-utils] Extract deserialization utils#15927

[build-utils] Extract deserialization utils#15927
healeycodes merged 1 commit into
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deserialize-utils

healeycodes commented Apr 13, 2026

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healeycodes commented Apr 13, 2026

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changeset-bot Bot commented Apr 13, 2026

🦋 Changeset detected

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vercel Bot commented Apr 13, 2026

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github-actions Bot commented Apr 13, 2026

📦 CLI Tarball Ready

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🧪 Unit Test Strategy

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