package.json is not defined by "exports"

[evdama]

Describe the bug

'./package.json' is not defined by "exports" when upgrading from v7.0.3 to v8.0.0

To Reproduce

Steps to reproduce the behavior:

1. upgrading from v7.0.3 to v8.0.0 and running npm build in a Svelte project
2. See error

Expected behavior

A rollup bundle without an error as shown below.

Runtime

• OS: macOS
• Runtime: Node.js
• Runtime Version: 14.1.0

Additional context

This is the command line output after upgrading from v7.0.3 to v8.0.0 in a Svelte project

> Package subpath './package.json' is not defined by "exports" in /Users/sa/0/edm/node_modules/uuid/package.json
Error [ERR_PACKAGE_PATH_NOT_EXPORTED]: Package subpath './package.json' is not defined by "exports" in /Users/sa/0/edm/node_modules/uuid/package.json
    at applyExports (internal/modules/cjs/loader.js:491:9)
    at resolveExports (internal/modules/cjs/loader.js:507:23)
    at Function.Module._findPath (internal/modules/cjs/loader.js:635:31)
    at Function.Module._resolveFilename (internal/modules/cjs/loader.js:1007:27)
    at Function.requireRelative.resolve (/Users/sa/0/edm/node_modules/require-relative/index.js:30:17)
    at tryResolve (/Users/sa/0/edm/node_modules/rollup-plugin-svelte/index.js:50:19)
    at Object.resolveId (/Users/sa/0/edm/node_modules/rollup-plugin-svelte/index.js:177:21)
    at /Users/sa/0/edm/node_modules/rollup/dist/shared/rollup.js:18217:25

I found some additional information in a SO post that might very well be related to the issue I'm seeing https://stackoverflow.com/questions/61621828/getting-strange-error-using-uuid-npm-module-what-am-i-doing-wrong/61730597#61730597

[ctavan]

@evdama could you provide actual steps that let me reproduce your error (meaning, code that I can execute)? "grading from v7.0.3 to v8.0.0 and running npm build in a Svelte project" does not really help since I have no clue about the details of your project…

[evdama]

I'm using uuid inside my server.js like so

import { v4 as uuidv4 } from 'uuid'

... more code...


const setNonceMiddleware = ( request, response, next ) => {
  try {
    response.locals.nonce = uuidv4()
    next()
  } catch ( error ) {
    console.error ( 'error from setNonceMiddleware: ', error )
  }
}

I don't use uuid anywhere else in my app, just the snippet above. I'll also provide a gist of my rollup config that might help, it's a Sapper (Svelte) project with a client and a server as well as a serviceworker section: https://gist.github.com/7b56754df52b5b26b1db3f2873cee726

[ctavan]

OK, this is strange.

Judging from the stack trace of your error this looks much more like an issue with https://github.com/sveltejs/rollup-plugin-svelte though…

Apparently the svelte rollup plugin uses require-relative under the hood:

    at Function.requireRelative.resolve (/Users/sa/0/edm/node_modules/require-relative/index.js:30:17)

which likely has problems with modern Node.js module loading since its latest version has been published 6 years ago:

I don't think we could or should solve this in this library here. I think the right place to report this issue would be https://github.com/sveltejs/rollup-plugin-svelte/issues

[evdama]

@ctavan thanks much, I'm trying to catch one of the svelte devs (@Conduitry) on discord, ask him what he thinks is best i.e. me filling an issue about an outdated require-relative that's used in rollup-plugin-svelte

[ctavan]

@evdama I dug a little bit into it, I think it's a problem directly in the svelte rollup plugin, see sveltejs/rollup-plugin-svelte#104

[Danny-A]

It is not only a Svelte Rollup problem.

I upgraded to v8.0.0 in my React Native project and encountered the exact same problem.

[ctavan]

@Danny-A can you specify what you mean by "exact same problem"? Do you get exactly the same stack trace? Do you use svelte and rollup-plugin-svelte within react-native (is that even possible)?

[ctavan]

@TrySound I think you are more familiar with use cases of requiring package.json files from npm modules in bundler pipelines. Is this something that npm modules should generally support? Is this a documented requirement for e.g. rollup?

[Danny-A]

@ctavan Sorry for the lack of context. I get a Warning in RN. I don't get a stack trace and I am not using rollup.

warn Package uuid has been ignored because it contains invalid configuration. Reason: Package subpath './package.json' is not defined by "exports" in /Users/danny/Projecten/***/mobile/node_modules/uuid/package.json

[TrySound]

There is no any requirement for bundlers because they mostly do not support native node modules. Perhaps package.json should always be in exports list. See here
ai/nanoevents#44 (comment)
https://unpkg.com/nanoevents@5.1.6/package.json