[python-analysis] Fix ESM compatibility by elprans · Pull Request #14869 · vercel/vercel

elprans · 2026-02-05T00:42:47Z

Fixes this:

(node:67) [MODULE_TYPELESS_PACKAGE_JSON] Warning: Module type of
file:///.../dist/wasm/vercel_python_analysis.js is not specified
and it doesn't parse as CommonJS.
Reparsing as ES module because module syntax was detected. This
incurs a performance overhead.

Now @vercel/python-analysis should be properly import-able and
require()-able.

Fixes this: (node:67) [MODULE_TYPELESS_PACKAGE_JSON] Warning: Module type of file:///.../dist/wasm/vercel_python_analysis.js is not specified and it doesn't parse as CommonJS. Reparsing as ES module because module syntax was detected. This incurs a performance overhead. Now `@vercel/python-analysis` should be properly `import`-able and `require()`-able.

changeset-bot · 2026-02-05T00:42:53Z

🦋 Changeset detected

Latest commit: a67c221

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

This PR includes changesets to release 16 packages

Name	Type
@vercel/python-analysis	Patch
@vercel/build-utils	Patch
@vercel/backends	Patch
vercel	Patch
@vercel/client	Patch
@vercel/elysia	Patch
@vercel/express	Patch
@vercel/fastify	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 · 2026-02-05T00:44:35Z

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github-actions · 2026-02-05T00:46:56Z

🧪 Unit Test Strategy

Comparing: 01f1e92 → a67c221 (view diff)

Strategy: Affected packages only

✅ Only testing packages that have been modified or depend on modified 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: Only affected packages will run unit tests
E2E tests: Handled separately (Version Packages PRs or run-e2e-tests label)
Type checks: Only affected packages will run type checks

This comment is automatically generated based on the affected testing strategy

scotttrinh

No blockers, just a few small things to consider.

utils/build.mjs

packages/python-analysis/scripts/build.mjs

utils/build.mjs

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/frameworks@3.17.0 ### Minor Changes - Add experimental Go runtime framework preset. ([#14865](#14865)) This adds support for deploying standalone Go HTTP servers (using `package main` with `func main()`) in addition to the existing serverless function pattern. The preset supports: - `main.go` at project root (simple projects) - `cmd/api/main.go` (API servers) - `cmd/server/main.go` (HTTP servers) The Go application must listen on the port specified by the `PORT` environment variable. ## @vercel/go@3.4.0 ### Minor Changes - Add experimental Go runtime framework preset. ([#14865](#14865)) This adds support for deploying standalone Go HTTP servers (using `package main` with `func main()`) in addition to the existing serverless function pattern. The preset supports: - `main.go` at project root (simple projects) - `cmd/api/main.go` (API servers) - `cmd/server/main.go` (HTTP servers) The Go application must listen on the port specified by the `PORT` environment variable. ## @vercel/backends@0.0.29 ### Patch Changes - Updated dependencies \[[`fc357e11cb4b00ab8ec413a0ea3586a87e733f0e`](fc357e1), [`ff320caa5c8a0857aad0b989699207a6a703256f`](ff320ca)]: - @vercel/build-utils@13.3.2 ## @vercel/build-utils@13.3.2 ### Patch Changes - Improve memory efficiency in `FileBlob.fromStream()` by avoiding unnecessary buffer copies when chunks are already Buffers ([#14701](#14701)) - [services] build time service url env vars ([#14893](#14893)) - Updated dependencies \[[`7a747344dfb778a650da2ee5f7fba8c974098b42`](7a74734)]: - @vercel/python-analysis@0.3.1 ## @vercel/cervel@0.0.16 ### Patch Changes - Updated dependencies \[]: - @vercel/backends@0.0.29 ## vercel@50.12.2 ### Patch Changes - Add source and defaultResourceName query params to legacy integration add web UI path ([#14868](#14868)) - [services] build time service url env vars ([#14893](#14893)) - Updated dependencies \[[`fc357e11cb4b00ab8ec413a0ea3586a87e733f0e`](fc357e1), [`84f121190813b2840a6a16279dcaa75dcb2872cd`](84f1211), [`ff320caa5c8a0857aad0b989699207a6a703256f`](ff320ca)]: - @vercel/build-utils@13.3.2 - @vercel/go@3.4.0 - @vercel/backends@0.0.29 - @vercel/elysia@0.1.31 - @vercel/express@0.1.40 - @vercel/fastify@0.1.34 - @vercel/h3@0.1.40 - @vercel/hono@0.2.34 - @vercel/hydrogen@1.3.5 - @vercel/koa@0.1.14 - @vercel/nestjs@0.2.35 - @vercel/next@4.15.23 - @vercel/node@5.5.32 - @vercel/python@6.6.0 - @vercel/redwood@2.4.9 - @vercel/remix-builder@5.5.10 - @vercel/ruby@2.2.5 - @vercel/rust@1.0.5 - @vercel/static-build@2.8.33 ## @vercel/client@17.2.35 ### Patch Changes - Updated dependencies \[[`fc357e11cb4b00ab8ec413a0ea3586a87e733f0e`](fc357e1), [`ff320caa5c8a0857aad0b989699207a6a703256f`](ff320ca)]: - @vercel/build-utils@13.3.2 ## @vercel/elysia@0.1.31 ### Patch Changes - Updated dependencies \[]: - @vercel/node@5.5.32 ## @vercel/express@0.1.40 ### Patch Changes - Updated dependencies \[]: - @vercel/node@5.5.32 - @vercel/cervel@0.0.16 ## @vercel/fastify@0.1.34 ### Patch Changes - Updated dependencies \[]: - @vercel/node@5.5.32 ## @vercel/fs-detectors@5.8.2 ### Patch Changes - Updated dependencies \[[`84f121190813b2840a6a16279dcaa75dcb2872cd`](84f1211)]: - @vercel/frameworks@3.17.0 ## @vercel/gatsby-plugin-vercel-builder@2.0.131 ### Patch Changes - Updated dependencies \[[`fc357e11cb4b00ab8ec413a0ea3586a87e733f0e`](fc357e1), [`ff320caa5c8a0857aad0b989699207a6a703256f`](ff320ca)]: - @vercel/build-utils@13.3.2 ## @vercel/h3@0.1.40 ### Patch Changes - Updated dependencies \[]: - @vercel/node@5.5.32 ## @vercel/hono@0.2.34 ### Patch Changes - Updated dependencies \[]: - @vercel/node@5.5.32 ## @vercel/koa@0.1.14 ### Patch Changes - Updated dependencies \[]: - @vercel/node@5.5.32 ## @vercel/nestjs@0.2.35 ### Patch Changes - Updated dependencies \[]: - @vercel/node@5.5.32 ## @vercel/node@5.5.32 ### Patch Changes - Updated dependencies \[[`fc357e11cb4b00ab8ec413a0ea3586a87e733f0e`](fc357e1), [`ff320caa5c8a0857aad0b989699207a6a703256f`](ff320ca)]: - @vercel/build-utils@13.3.2 ## @vercel/python-analysis@0.3.1 ### Patch Changes - fix ESM/CJS cross-compatibility ([#14869](#14869)) ## @vercel/static-build@2.8.33 ### Patch Changes - Updated dependencies \[]: - @vercel/gatsby-plugin-vercel-builder@2.0.131 Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>

elprans requested review from a team as code owners February 5, 2026 00:42

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a67c221

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nsidnev approved these changes Feb 5, 2026

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scotttrinh approved these changes Feb 5, 2026

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ricardo-agz approved these changes Feb 5, 2026

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elprans merged commit 7a74734 into main Feb 5, 2026
271 of 276 checks passed

elprans deleted the elprans/python-analysis-esm-compat branch February 5, 2026 21:07

vercel-release-bot mentioned this pull request Feb 5, 2026

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[python-analysis] Fix ESM compatibility#14869

[python-analysis] Fix ESM compatibility#14869
elprans merged 2 commits intomainfrom
elprans/python-analysis-esm-compat

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