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SSR can't resolve builtin modules that start with underscore

See original GitHub issue

Describe the bug

Some packages (like @prisma/client) require the builtin _http_common module (or others that start with an underscore) which causes ssrLoadModule to throw Error: Cannot find module '_http_common' imported from ... error. It seems to be caused by the builtin-modules package that Vite uses for this purpose filtering out modules that start with an underscore (changing the relevant regex in the transpiled code fixes the problem).

Reproduction

Clone the repo and install the dependencies: https://github.com/cyco130/vite-ssr-http-common-issue
node ssr-module.mjs works but node . throws trying to load the same module with ssrLoadModule.

System Info

System:
    OS: Linux 5.4 Linux Mint 20.2 (Uma)
    CPU: (8) x64 Intel(R) Core(TM) i7-3630QM CPU @ 2.40GHz
    Memory: 1.70 GB / 15.53 GB
    Container: Yes
    Shell: 5.0.17 - /bin/bash
  Binaries:
    Node: 14.18.1 - /usr/local/bin/node
    Yarn: 1.22.11 - ~/.npm-global/bin/yarn
    npm: 7.24.1 - ~/.npm-global/bin/npm
  Browsers:
    Chrome: 96.0.4664.45
    Firefox: 94.0

Used Package Manager

npm

Logs

No response

Validations

Follow our Code of Conduct
Read the Contributing Guidelines.
Read the docs.
Check that there isn’t already an issue that reports the same bug to avoid creating a duplicate.
Make sure this is a Vite issue and not a framework-specific issue. For example, if it’s a Vue SFC related bug, it should likely be reported to https://github.com/vuejs/vue-next instead.
Check that this is a concrete bug. For Q&A open a GitHub Discussion or join our Discord Chat Server.
The provided reproduction is a minimal reproducible example of the bug.

Issue Analytics

State:
Created 2 years ago
Reactions:2
Comments:7 (7 by maintainers)

Top GitHub Comments

3reactions

bluwycommented, Nov 25, 2021

I took a look at why @prisma/client is using _http_common, looks like it’s used by a dependency called https://github.com/nodejs/undici. From this comment, undici v4 should remove the need for _http_common, so all that’s left is for @prisma/client to upgrade to v4, which is not done yet (https://github.com/prisma/prisma/issues/7539). Maybe it’s better to wait for the PR in the long term?

2reactions

ygj6commented, Nov 25, 2021

its mentioned in #5709 that it used to work in 2.6.14

@Niputi No, I tested the above reproduction repo with vite@2.6.14 and got the same error. It is a bug of vite all the time, @bluwy is right.

In addition, I fetched your PR code and re-tested, it has solved the bug. 👍

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