[build-utils] Extract main deserialize-build-output file by healeycodes · Pull Request #16048 · vercel/vercel

healeycodes · 2026-04-20T10:45:23Z

Building on previous PRs:

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.

changeset-bot · 2026-04-20T10:45:36Z

🦋 Changeset detected

Latest commit: d8913d4

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

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github-actions · 2026-04-20T10:46:00Z

📦 CLI Tarball Ready

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  "build": {
    "env": {
      "VERCEL_CLI_VERSION": "vercel@https://vercel-grzl2j33g.vercel.sh/tarballs/vercel.tgz"
    }
  }
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Python Runtime Wheel

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To use in your Python project builds, also set this environment variable:

VERCEL_RUNTIME_PYTHON="vercel-runtime @ https://vercel-grzl2j33g.vercel.sh/tarballs/vercel_runtime-0.14.0.dev1776688009+d8913d4-py3-none-any.whl"

Python Workers Wheel

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VERCEL_WORKERS_PYTHON="vercel-workers @ https://vercel-grzl2j33g.vercel.sh/tarballs/vercel_workers-0.1.0.dev1776688009+d8913d4-py3-none-any.whl"

github-actions · 2026-04-20T10:46:01Z

📦 CLI Tarball Ready (v2)

The Vercel CLI tarball for this PR is now available!

Quick Test

You can test this PR's CLI directly by running:

npx https://vercel-grzl2j33g.vercel.sh/tarballs/vercel.tgz --help

Use in vercel.json

To use this CLI version in your project builds, add to your vercel.json:

{
  "build": {
    "env": {
      "VERCEL_CLI_VERSION": "vercel@https://vercel-grzl2j33g.vercel.sh/tarballs/vercel.tgz"
    }
  }
}

Python Runtime Wheel

A vercel-runtime wheel was also built for this PR.
To use in your Python project builds, also set this environment variable:

VERCEL_RUNTIME_PYTHON="vercel-runtime @ https://vercel-grzl2j33g.vercel.sh/tarballs/vercel_runtime-0.14.0.dev1776688009+d8913d4-py3-none-any.whl"

Python Workers Wheel

A vercel-workers wheel was also built for this PR.
To use in your Python project builds, also set this environment variable:

VERCEL_WORKERS_PYTHON="vercel-workers @ https://vercel-grzl2j33g.vercel.sh/tarballs/vercel_workers-0.1.0.dev1776688009+d8913d4-py3-none-any.whl"

This comment is from the v2 workflow (repository_dispatch)

vercel · 2026-04-20T10:46:09Z

Low Risk — Shared package code extraction with new exports + comprehensive tests — no behavioral changes to existing callers.

deserialize-build-output.ts: new file extracting build output deserialization logic from existing callers
deserialize-build-output-types.ts: new TypeScript types for deserialization options and results
index.ts: exports new functions and types from build-utils package

^{Assessed at d8913d4.}

github-actions · 2026-04-20T10:49:44Z

🧪 Unit Test Strategy

Comparing: be0c33c → d8913d4 (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

github-actions · 2026-04-20T10:58:47Z

🧪 Unit Test Strategy (v2)

Comparing: be0c33c → d8913d4 (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 by the v2 workflow (repository_dispatch)

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

8206bff

healeycodes requested a review from ofhouse April 20, 2026 10:45

healeycodes requested a review from a team as a code owner April 20, 2026 10:45

vercel Bot deployed to Preview April 20, 2026 10:45 View deployment

changeset

e88f076

vercel Bot deployed to Preview April 20, 2026 10:49 View deployment

ofhouse approved these changes Apr 20, 2026

View reviewed changes

fix test

d8913d4

healeycodes enabled auto-merge (squash) April 20, 2026 12:26

vercel Bot deployed to Preview April 20, 2026 12:27 View deployment

healeycodes merged commit ee720e1 into main Apr 20, 2026
202 checks passed

healeycodes deleted the break-up-deserialize-2 branch April 20, 2026 13:00

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

[build-utils] Extract main deserialize-build-output file#16048
healeycodes merged 3 commits into
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break-up-deserialize-2

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