yarn peer dependency issues, build fails when trying to install / start parcel dev server #7880

clarktlaugh · 2022-03-31T14:07:25Z

🐛 bug report

I am trying to install parcel using the guide at https://parceljs.org/getting-started/webapp/ and when I perform a yarn install, I get several peer dependency issues. When I run yarn parcel ./src/index.html, I get a build error:

@parcel/transformer-js: could not resolve module "@parcel/core" from ...

🎛 Configuration (.babelrc, package.json, cli command)

yarn version: 3.2.0
nodejs version: v16.14.2
parcel version: 2.4.0

package.json:

{
  "name": "myapp",
  "packageManager": "yarn@3.2.0",
  "source": "src/index.html",
  "scripts": {
    "start": "parcel",
    "build": "parcel build",
    "import": "node tools/import.js"
  },
  "dependencies": {
    "grommet": "^2.21.0",
    "grommet-icons": "^4.7.0",
    "grommet-theme-hpe": "^2.3.0",
    "react": "^17.0.2",
    "react-dom": "^17.0.2",
    "react-is": "^17.0.2",
    "styled-components": "^5.3.3",
    "xml2js": "^0.4.23"
  },
  "devDependencies": {
    "parcel": "^2.4.0"
  }
}

ran:

$ yarn install
$ yarn parcel ./src/index.html

🤔 Expected Behavior

no yarn warnings / errors
build should succeed and dev web site should load

😯 Current Behavior

I get the following output from yarn install:

clarkl@ubuntu:~/src/ehymnal$ yarn install
➤ YN0000: ┌ Resolution step
➤ YN0002: │ @parcel/optimizer-image@npm:2.4.0 doesn't provide @parcel/core (p44b39), requested by @parcel/workers
➤ YN0002: │ @parcel/transformer-image@npm:2.4.0 doesn't provide @parcel/core (p520b2), requested by @parcel/workers
➤ YN0002: │ @parcel/transformer-js@npm:2.4.0 doesn't provide @parcel/core (pbc763), requested by @parcel/workers
➤ YN0002: │ @parcel/types@npm:2.4.0 doesn't provide @parcel/core (p3763a), requested by @parcel/fs
➤ YN0002: │ @parcel/types@npm:2.4.0 doesn't provide @parcel/core (p4a530), requested by @parcel/workers
➤ YN0002: │ @parcel/types@npm:2.4.0 doesn't provide @parcel/core (pce8d5), requested by @parcel/cache
➤ YN0002: │ @parcel/types@npm:2.4.0 doesn't provide @parcel/core (p920a9), requested by @parcel/package-manager
➤ YN0000: │ Some peer dependencies are incorrectly met; run yarn explain peer-requirements <hash> for details, where <hash> is the six-letter p-prefixed code
➤ YN0000: └ Completed in 0s 541ms
➤ YN0000: ┌ Fetch step
➤ YN0000: └ Completed in 2s 295ms
➤ YN0000: ┌ Link step
➤ YN0000: │ ESM support for PnP uses the experimental loader API and is therefore experimental
➤ YN0000: └ Completed in 0s 358ms
➤ YN0000: Done with warnings in 3s 290ms

Output from yarn parcel ./src/index.html:

clarkl@ubuntu:~/src/ehymnal$ yarn parcel src/index.html
Server running at http://localhost:1234
🚨 Build failed.

@parcel/transformer-js: Could not resolve module "@parcel/core" from
"/home/clarkl/src/ehymnal/.yarn/__virtual__/@parcel-workers-virtual-b894a7519c/0/cache/@parcel-workers-npm-2.4.0-02c678f07b-1133365fb3.zip/node_modules/@parcel/workers/lib/Handle.js"

  Error: Could not resolve module "@parcel/core" from
  "/home/clarkl/src/ehymnal/.yarn/__virtual__/@parcel-workers-virtual-b894a7519c/0/cache/@parcel-workers-npm-2.4.0-02c678f07b-1133365fb3.zip/node_modules/@parcel/workers/lib/Handle.js"
  at $0578d0f6e116167e$export$fb2a0b866a8162dc.resolve
  (/home/clarkl/src/ehymnal/.yarn/__virtual__/@parcel-package-manager-virtual-61561ddc50/0/cache/@parcel-package-manager-npm-2.4.0-400bc2f526-89104ec718.zip/node_modules/@parcel/package-manager/lib/index.js:4919:21)
  at NodePackageManager.resolveSync
  (/home/clarkl/src/ehymnal/.yarn/__virtual__/@parcel-package-manager-virtual-61561ddc50/0/cache/@parcel-package-manager-npm-2.4.0-400bc2f526-89104ec718.zip/node_modules/@parcel/package-manager/lib/index.js:3510:42)
  at NodePackageManager.requireSync
  (/home/clarkl/src/ehymnal/.yarn/__virtual__/@parcel-package-manager-virtual-61561ddc50/0/cache/@parcel-package-manager-npm-2.4.0-400bc2f526-89104ec718.zip/node_modules/@parcel/package-manager/lib/index.js:3351:34)
  at Module.m.require
  (/home/clarkl/src/ehymnal/.yarn/__virtual__/@parcel-package-manager-virtual-61561ddc50/0/cache/@parcel-package-manager-npm-2.4.0-400bc2f526-89104ec718.zip/node_modules/@parcel/package-manager/lib/index.js:3365:25)
  at require (node:internal/modules/cjs/helpers:102:18)
  at _core
  (/home/clarkl/src/ehymnal/.yarn/__virtual__/@parcel-workers-virtual-b894a7519c/0/cache/@parcel-workers-npm-2.4.0-02c678f07b-1133365fb3.zip/node_modules/@parcel/workers/lib/Handle.js:9:16)
  at Object.<anonymous>
  (/home/clarkl/src/ehymnal/.yarn/__virtual__/@parcel-workers-virtual-b894a7519c/0/cache/@parcel-workers-npm-2.4.0-02c678f07b-1133365fb3.zip/node_modules/@parcel/workers/lib/Handle.js:57:5)
  at Module._compile (node:internal/modules/cjs/loader:1103:14)
  at Object.Module._extensions..js (node:internal/modules/cjs/loader:1157:10)
  at Object.require$$0.Module._extensions..js (/home/clarkl/src/ehymnal/.pnp.cjs:12009:33)

The dev server at http://localhost:1234 is inaccessible from Chrome:

"This site can't be reached. localhost refused to connect"

💁 Possible Solution

🔦 Context

I'm trying to deploy my React app using netlify, and this was reviewed favorably as a simple, zero-config, way to do that.

💻 Code Sample

🌍 Your Environment

Software	Version(s)
Parcel	2.4.0
Node	v16.14.2
npm/Yarn	3.2.0
Operating System	Ubuntu 20.04

The text was updated successfully, but these errors were encountered:

clarktlaugh · 2022-03-31T14:21:18Z

I can manually add @parcel/core as a dependency and do not get any build issues, but still see the yarn warnings:

$ yarn add @parcel/core --dev
➤ YN0000: ┌ Resolution step
➤ YN0002: │ @parcel/optimizer-image@npm:2.4.0 doesn't provide @parcel/core (p44b39), requested by @parcel/workers
➤ YN0002: │ @parcel/transformer-image@npm:2.4.0 doesn't provide @parcel/core (p520b2), requested by @parcel/workers
➤ YN0002: │ @parcel/transformer-js@npm:2.4.0 doesn't provide @parcel/core (pbc763), requested by @parcel/workers
➤ YN0002: │ @parcel/types@npm:2.4.0 doesn't provide @parcel/core (p3763a), requested by @parcel/fs
➤ YN0002: │ @parcel/types@npm:2.4.0 doesn't provide @parcel/core (p4a530), requested by @parcel/workers
➤ YN0002: │ @parcel/types@npm:2.4.0 doesn't provide @parcel/core (pce8d5), requested by @parcel/cache
➤ YN0002: │ @parcel/types@npm:2.4.0 doesn't provide @parcel/core (p920a9), requested by @parcel/package-manager
➤ YN0000: │ Some peer dependencies are incorrectly met; run yarn explain peer-requirements <hash> for details, where <hash> is the six-letter p-prefixed code
➤ YN0000: └ Completed in 0s 646ms
➤ YN0000: ┌ Fetch step
➤ YN0000: └ Completed in 0s 858ms
➤ YN0000: ┌ Link step
➤ YN0000: │ ESM support for PnP uses the experimental loader API and is therefore experimental
➤ YN0000: └ Completed in 0s 234ms
➤ YN0000: Done with warnings in 1s 801ms

$ yarn parcel src/index.html
Server running at http://localhost:1234
✨ Built in 15.03s

tfrijsewijk · 2022-04-02T09:39:10Z

I am build a library with several entrypoints using "source": ["src/entrypoint1.ts", "src/entrypoint2"] in package.json.

I only have a devDependency on Parcel, no dependency on @parcel/core. Everything works (watching + building) but I'm seeing the same yarn warnings:

                 [exec] ➤ YN0000: ┌ Resolution step
                 [exec] ➤ YN0002: │ @parcel/optimizer-image@npm:2.4.0 doesn't provide @parcel/core (p44b39), requested by @parcel/workers
                 [exec] ➤ YN0002: │ @parcel/transformer-image@npm:2.4.0 doesn't provide @parcel/core (p520b2), requested by @parcel/workers
                 [exec] ➤ YN0002: │ @parcel/transformer-js@npm:2.4.0 doesn't provide @parcel/core (pbc763), requested by @parcel/workers
                 [exec] ➤ YN0002: │ @parcel/types@npm:2.4.0 doesn't provide @parcel/core (p3763a), requested by @parcel/fs
                 [exec] ➤ YN0002: │ @parcel/types@npm:2.4.0 doesn't provide @parcel/core (p4a530), requested by @parcel/workers
                 [exec] ➤ YN0002: │ @parcel/types@npm:2.4.0 doesn't provide @parcel/core (pce8d5), requested by @parcel/cache
                 [exec] ➤ YN0002: │ @parcel/types@npm:2.4.0 doesn't provide @parcel/core (p920a9), requested by @parcel/package-manager

Lazerbeak12345 · 2022-04-02T14:24:34Z

From my testing, this error is only blocking if yarn is using strict pnp mode.

Here's yarn's documentation page about pnp mode: https://yarnpkg.com/features/pnp

The issue would probably be fixed by marking @parcel/core a direct dependency instead of a peer dependency in these modules:

@parcel/workers
@parcel/fs
@parcel/cache
@parcel/package-manager

mischnic · 2022-04-02T14:42:54Z

The reason it's a peer dependency in the first place is that these four packages call a function in @parcel/core

parcel/packages/core/cache/src/FSCache.js

Line 117 in 80c728c

registerSerializableClass(`${packageJson.version}:FSCache`, FSCache);

and if they there are multiple instances of @parcel/core involved, then there'll be an error at runtime become something wasn't registered.

Lazerbeak12345 · 2022-04-02T16:15:23Z

Hmm... that's what I had feared. I'm surprised that yarn considers this an error, as this is a very valid use-case of peerDependancies.

Lazerbeak12345 · 2022-04-02T16:42:00Z

For now, if anyone else runs into this issue while a long-term solution brews, I'd recommend looking at this part of the docs:

https://yarnpkg.com/getting-started/migration#fix-dependencies-with-packageextensions

I used that to generate this text to put in my .yarnrc.yml

packageExtensions:
  "@parcel/workers@2.4.1":
    dependencies:
      "@parcel/core": "2.4.1"
  "@parcel/fs@2.4.1":
    dependencies:
      "@parcel/core": "2.4.1"
  "@parcel/cache@2.4.1":
    dependencies:
      "@parcel/core": "2.4.1"
  "@parcel/package-manager@2.4.1":
    dependencies:
      "@parcel/core": "2.4.1"

Keep in mind that the above is a short-term solution.

stephank · 2022-05-03T13:51:24Z

The issue here, from Yarn's perspective, is that @parcel/transformer-js depends on @parcel/workers without fulfilling the @parcel/core peer dependency. Peer dependencies in Yarn need to be satisfied by the immediate dependant, and not just somewhere (multiple steps) up the dependency chain.

Some of this was already fixed in 2.5.0, via #7977, including the specific case reported here. But @parcel/optimizer-image and @parcel/types are still not set up correctly.

noahtallen · 2023-05-06T20:24:01Z

This is still an issue, which is unfortunate as these warnings are the default behavior when running the recommended setup command with the current version of Yarn

noahtallen · 2023-05-06T20:25:08Z

See #6727 as well

amartincolby · 2023-06-02T14:25:14Z

Is there a roadmap or any other discussions around this? I have the privilege of some greenfield work and very much want Parcel combined with no-install Yarn but would rather not distribute a library to teams with workarounds in it.

mischnic · 2023-06-03T08:30:57Z

See #9070 and #6727 (comment) . These should cover all remaining problems

github-actions bot added the Stale Inactive issues label Oct 31, 2022

mischnic removed the Stale Inactive issues label Oct 31, 2022

parcel-bundler deleted a comment from github-actions bot Oct 31, 2022

github-actions bot added the Stale Inactive issues label Apr 29, 2023

github-actions bot removed the Stale Inactive issues label May 6, 2023

mischnic mentioned this issue Jun 2, 2023

Installing with Yarn triggers various dependency warnings #9065

Closed

mischnic mentioned this issue Jun 3, 2023

Add core as peerdep to image optimizer #9070

Merged

mischnic closed this as completed in #9070 Jun 6, 2023

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yarn peer dependency issues, build fails when trying to install / start parcel dev server #7880

yarn peer dependency issues, build fails when trying to install / start parcel dev server #7880

clarktlaugh commented Mar 31, 2022

clarktlaugh commented Mar 31, 2022 •

edited

tfrijsewijk commented Apr 2, 2022

Lazerbeak12345 commented Apr 2, 2022

mischnic commented Apr 2, 2022

Lazerbeak12345 commented Apr 2, 2022

Lazerbeak12345 commented Apr 2, 2022 •

edited

stephank commented May 3, 2022

noahtallen commented May 6, 2023

noahtallen commented May 6, 2023

amartincolby commented Jun 2, 2023

mischnic commented Jun 3, 2023

yarn peer dependency issues, build fails when trying to install / start parcel dev server #7880

yarn peer dependency issues, build fails when trying to install / start parcel dev server #7880

Comments

clarktlaugh commented Mar 31, 2022

🐛 bug report

🎛 Configuration (.babelrc, package.json, cli command)

🤔 Expected Behavior

😯 Current Behavior

💁 Possible Solution

🔦 Context

💻 Code Sample

🌍 Your Environment

clarktlaugh commented Mar 31, 2022 • edited

tfrijsewijk commented Apr 2, 2022

Lazerbeak12345 commented Apr 2, 2022

mischnic commented Apr 2, 2022

Lazerbeak12345 commented Apr 2, 2022

Lazerbeak12345 commented Apr 2, 2022 • edited

stephank commented May 3, 2022

noahtallen commented May 6, 2023

noahtallen commented May 6, 2023

amartincolby commented Jun 2, 2023

mischnic commented Jun 3, 2023

clarktlaugh commented Mar 31, 2022 •

edited

Lazerbeak12345 commented Apr 2, 2022 •

edited