fix(cli): fix import resolution strategy for builders by mehulkar · Pull Request #15041 · vercel/vercel

mehulkar · 2026-02-13T04:44:01Z

Previously, if a builder was not found in the local cache directory, we
were always installing it. This was incorrect. We should first check the
CLI's node modules for the builder. This will support environments like
the Vercel build container that pre-install all the builders for
performance.

This also fixes the e2e test for eleventy-v0. This fixture was
incidentally failing to deploy with this bug, because a local
.vercel/builders directory was created with node_modules. The test setup
uses vc deploy, which does not push up the .gitignore file, so eleventy
was then trying to read all of .vercel/builders and building it. This
failed because there HAPPENED to be a file in there that Eleventy could
not process. Through a series of fortunate circumstances, we found this
bug.

Note

Low Risk Change

This PR changes builder import resolution order to check CLI's node_modules before installing, which is a logic change in build tooling but does not affect security, auth, or data integrity.

Reorders builder resolution: checks CLI node_modules before triggering install
Removes early-exit install path when peerDep not found in cache
Adds unit test and .eleventyignore entry for test fixture

^{Risk assessment for commit cd7917c.}

Previously, if a builder was not found in the local cache directory, we were always installing it. This was incorrect. We should first check the CLI's node modules for the builder. This will support environments like the Vercel build container that pre-install all the builders for performance. This also fixes the e2e test for eleventy-v0. This fixture was incidentally failing to deploy with this bug, because a local .vercel/builders directory was created with node_modules. The test setup uses vc deploy, which does not push up the .gitignore file, so eleventy was then trying to read all of .vercel/builders and building it. This failed because there HAPPENED to be a file in there that Eleventy could not process. Through a series of fortunate circumstances, we found this bug.

changeset-bot · 2026-02-13T04:44:06Z

🦋 Changeset detected

Latest commit: cd7917c

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

This PR includes changesets to release 1 package

Name	Type
vercel	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

github-actions · 2026-02-13T04:44:48Z

📦 CLI Tarball Ready

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-lqu0tme2j.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-lqu0tme2j.vercel.sh/tarballs/vercel.tgz"
    }
  }
}

github-actions · 2026-02-13T04:45:06Z

🧪 Unit Test Strategy

Comparing: f278d46 → cd7917c (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 - 25 (63%)

@vercel/backends
@vercel/cervel
@vercel/elysia
@vercel/express
@vercel/fastify
@vercel/go
@vercel/h3
@vercel/hono
@vercel/hydrogen
@vercel/koa
@vercel/nestjs
@vercel/next
@vercel/node
@vercel/python
@vercel/redwood
@vercel/remix-builder
@vercel/ruby
@vercel/rust
@vercel/static-build
vercel
@vercel/build-utils
@vercel/client
@vercel/firewall
@vercel/fs-detectors
examples

Unaffected packages - 15 (38%)

@vercel-internals/get-package-json
@vercel/cli-auth
@vercel/config
@vercel/detect-agent
@vercel/edge
@vercel/error-utils
@vercel/frameworks
@vercel/functions
@vercel/gatsby-plugin-vercel-builder
@vercel/oidc
@vercel/oidc-aws-credentials-provider
@vercel/python-analysis
@vercel/related-projects
@vercel/routing-utils
@vercel/static-config

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 reverts commit 4794a44.

packages/elysia/.deploy

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 publish to npm yourself or [setup this action to publish automatically](https://github.com/changesets/action#with-publishing). 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@50.17.0 ### Minor Changes - Install builder packages on demand ([#15023](#15023)) - Display functions exceeding 250MB uncompressed size limit with total size and breakdown of largest dependencies (requires environment variable VERCEL_ANALYZE_BUILD_OUTPUT=1). ([#14067](#14067)) ### Patch Changes - Add `--format=json` option to `vercel integration list` and show project name in table header when results are scoped to a project ([#15007](#15007)) - Fix builder import resolution from pre-installed depenencies ([#15041](#15041)) - Services routing improvements: ([#15018](#15018)) - Fix route ownership scoping so parent service catch-alls (e.g. Vite SPA fallback) don't capture sibling service prefixes - Move shared ownership-guard helpers (`getOwnershipGuard`, `scopeRouteSourceToOwnership`) to `@vercel/routing-utils` - Place runtime service function outputs under internal `/_svc/<service>/index` namespace to prevent filesystem path leakage - Block `/_svc` as a reserved routePrefix in service validation - Scope all builder-emitted routes (not just route-owning builders) to their service ownership before merging - Updated dependencies \[]: - @vercel/static-build@2.8.37 - @vercel/build-utils@13.4.0 - @vercel/next@4.15.28 - @vercel/redwood@2.4.9 - @vercel/rust@1.0.5 ## @vercel/client@17.2.41 ### Patch Changes - Updated dependencies \[[`3cd0b559f1815fdb13f7aa05114bae2b0b0b0e68`](3cd0b55)]: - @vercel/routing-utils@5.3.3 - @vercel/build-utils@13.4.0 ## @vercel/fs-detectors@5.8.6 ### Patch Changes - Services routing improvements: ([#15018](#15018)) - Fix route ownership scoping so parent service catch-alls (e.g. Vite SPA fallback) don't capture sibling service prefixes - Move shared ownership-guard helpers (`getOwnershipGuard`, `scopeRouteSourceToOwnership`) to `@vercel/routing-utils` - Place runtime service function outputs under internal `/_svc/<service>/index` namespace to prevent filesystem path leakage - Block `/_svc` as a reserved routePrefix in service validation - Scope all builder-emitted routes (not just route-owning builders) to their service ownership before merging - Updated dependencies \[[`3cd0b559f1815fdb13f7aa05114bae2b0b0b0e68`](3cd0b55)]: - @vercel/routing-utils@5.3.3 - @vercel/frameworks@3.17.1 ## @vercel/routing-utils@5.3.3 ### Patch Changes - Services routing improvements: ([#15018](#15018)) - Fix route ownership scoping so parent service catch-alls (e.g. Vite SPA fallback) don't capture sibling service prefixes - Move shared ownership-guard helpers (`getOwnershipGuard`, `scopeRouteSourceToOwnership`) to `@vercel/routing-utils` - Place runtime service function outputs under internal `/_svc/<service>/index` namespace to prevent filesystem path leakage - Block `/_svc` as a reserved routePrefix in service validation - Scope all builder-emitted routes (not just route-owning builders) to their service ownership before merging  > [!NOTE] > Low Risk Change > > This PR is an automated Changesets release that only updates version numbers in package.json files and adds changelog entries - no source code changes are present. > > - Deletes changeset markdown files after consuming them > - Bumps version numbers in 4 package.json files > - Adds changelog entries documenting previous changes > > <sup>Risk assessment for [commit 9186d29](https://github.com/vercel/vercel/commit/9186d293adee9d555b8582f5c1d0cec87689acf1).</sup>  Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>

2 commits related moving builders out of the bundle: - #15023 - #15041 Since it's isn't a clean revert, I've: - moved builders back into dependencies, and reverted import-builders and its tests to the commit at 3cd0b55 (parent of 127547d). No other commits have landed to these files since then, so it seems like the best way of doing this. This commit also contains a timestamp update on all builders `.deploy` files. This is just a way to invalidate the builders so all e2e tests run on this PR.

vercel bot deployed to Preview February 13, 2026 04:44 View deployment

revert debug

9b9cb84

invalidate

7bbb070

vercel bot deployed to Preview February 13, 2026 04:46 View deployment

invent a global cache buster for e2e tests

aed4ad0

vercel bot deployed to Preview February 13, 2026 04:49 View deployment

mehulkar added 2 commits February 12, 2026 22:51

changeset

01d258a

global

b2bfd72

mehulkar marked this pull request as ready for review February 13, 2026 04:52

mehulkar requested review from a team and ijjk as code owners February 13, 2026 04:52

mehulkar requested a review from jeffsee55 February 13, 2026 04:52

vercel bot deployed to Preview February 13, 2026 04:52 View deployment

deploy all

4794a44

mehulkar requested review from a team, MatthewStanciu, cramforce, ctgowrie, ecklf, kldavis4, mknichel, quuu and sueplex as code owners February 13, 2026 04:59

mehulkar requested review from agadzik, chloetedder, huozhi, timneutkens and ztanner as code owners February 13, 2026 04:59

vercel bot deployed to Preview February 13, 2026 05:01 View deployment

mehulkar added 2 commits February 12, 2026 23:04

Revert "deploy all"

168977b

This reverts commit 4794a44.

invalidate all builders so all tests are run

aeba512

mehulkar removed request for a team, MatthewStanciu, agadzik, chloetedder, cramforce, ctgowrie, kldavis4, mknichel, quuu and sueplex February 13, 2026 05:05

vercel bot deployed to Preview February 13, 2026 05:06 View deployment

ignore dynamically produced .vercel dir in 11ty fixture

cd7917c

vercel bot deployed to Preview February 13, 2026 05:28 View deployment

tonypan2 approved these changes Feb 13, 2026

View reviewed changes

ijjk reviewed Feb 13, 2026

View reviewed changes

packages/elysia/.deploy Show resolved Hide resolved

ijjk approved these changes Feb 13, 2026

View reviewed changes

mehulkar merged commit 2aad073 into main Feb 13, 2026
190 checks passed

mehulkar deleted the mk/fix-import-resolution-logic branch February 13, 2026 06:03

vercel-release-bot mentioned this pull request Feb 13, 2026

Version Packages #15035

Merged

mehulkar mentioned this pull request Feb 14, 2026

feat(cli): move builders back into bundle #15059

Merged

Provide feedback

Saved searches

Use saved searches to filter your results more quickly

fix(cli): fix import resolution strategy for builders#15041

fix(cli): fix import resolution strategy for builders#15041
mehulkar merged 10 commits intomainfrom
mk/fix-import-resolution-logic

mehulkar commented Feb 13, 2026 •

edited by vercel bot

Loading

Uh oh!

changeset-bot bot commented Feb 13, 2026 •

edited

Loading

Uh oh!

github-actions bot commented Feb 13, 2026 •

edited

Loading

Uh oh!

github-actions bot commented Feb 13, 2026 •

edited

Loading

Uh oh!

Uh oh!

Uh oh!

Reviewers

Assignees

Labels

Projects

Milestone

Development

Uh oh!

3 participants

Conversation

mehulkar commented Feb 13, 2026 • edited by vercel bot Loading Uh oh! There was an error while loading. Please reload this page.

Uh oh!

Uh oh!

changeset-bot bot commented Feb 13, 2026 • edited Loading Uh oh! There was an error while loading. Please reload this page.

Uh oh!

🦋 Changeset detected

Uh oh!

github-actions bot commented Feb 13, 2026 • edited Loading Uh oh! There was an error while loading. Please reload this page.

Uh oh!

📦 CLI Tarball Ready

Quick Test

Use in vercel.json

Uh oh!

github-actions bot commented Feb 13, 2026 • edited Loading Uh oh! There was an error while loading. Please reload this page.

Uh oh!

🧪 Unit Test Strategy

Results

Uh oh!

Uh oh!

Uh oh!

Reviewers

Assignees

Labels

Projects

Milestone

Development

Uh oh!

3 participants

mehulkar commented Feb 13, 2026 •

edited by vercel bot

Loading

changeset-bot bot commented Feb 13, 2026 •

edited

Loading

github-actions bot commented Feb 13, 2026 •

edited

Loading

github-actions bot commented Feb 13, 2026 •

edited

Loading