[DevTools Bug]: can not build react devtools for local development, instructions lead to error

[yanlingwang23]

Website or app

https://github.com/facebook/react/tree/main/packages/react-devtools-extensions

Repro steps

Follow the instructions here to build local version of react devtools extension: https://github.com/facebook/react/tree/main/packages/react-devtools-extensions

git clone https://github.com/facebook/react.git 
cd react
yarn install
yarn build-for-devtools

Stuck on this step everytime yarn build-for-devtools:

D:\Other\react\node_modules\flow-parser\flow_parser.js:807
throw a}function
^

Error: SignedSource.signFile(...): Cannot sign file without token: <<SignedSource::*O*zOeWoEQle#+L!plEphiEmie@IsG>>
    at Object.<anonymous> (D:\Other\react\node_modules\signedsource\index.js:20:28)
    at Module._compile (node:internal/modules/cjs/loader:1196:14)
    at Object.Module._extensions..js (node:internal/modules/cjs/loader:1250:10)
    at Module.load (node:internal/modules/cjs/loader:1074:32)
    at Function.Module._load (node:internal/modules/cjs/loader:909:12)
    at Module.require (node:internal/modules/cjs/loader:1098:19)
    at require (node:internal/modules/cjs/helpers:108:18)
    at Object.<anonymous> (D:\Other\react\scripts\rollup\packaging.js:18:37)
    at Module._compile (node:internal/modules/cjs/loader:1196:14)
    at Object.Module._extensions..js (node:internal/modules/cjs/loader:1250:10)

Is there anything else I need to set up in order to make this work?

How often does this bug happen?

Every time

DevTools package (automated)

No response

DevTools version (automated)

No response

Error message (automated)

No response

Error call stack (automated)

No response

Error component stack (automated)

No response

GitHub query string (automated)

No response

[markerikson]

Confirmed, I'm seeing this myself as of #26616 .

I was able to work around it by commenting out the line // processGenerated('build/react-native/shims'); in scripts/rollup/packaging.js, but it's annoying and needs to be fixed.

[rubennorte]

Thanks @yanlingwang23 and @markerikson for reporting this issue introduced in #26616. Working on a fix now.

[rubennorte]

This should be solve now. Please reopen if you continue seeing issues in "main" after this merge.

[Biki-das]

@rubennorte the devtools extension build still fails i am currently on windows and it's failing for me , i am trying to solve a devtools extension bug which is related to shadowdom and unless i can build the devtools extension that won't be possible!

[Biki-das]

@yanlingwang23 could you try to build the react devtools extension and see if it builds or not?

[gaearon]

@Biki-das This screenshot doesn't show what the actual error is. Can you track it down?

[Biki-das]

@Biki-das This screenshot doesn't show what the actual error is. Can you track it down?

@gaearon this is the error currently I am getting,i have installed the necessary dependencies already as mentioned in the readme!

yarn dev tools build also unable to build some file probably

[Biki-das]

does this contrib guide still works https://gist.github.com/bvaughn/ae29cafd1290e91cbc4bf6e0be503f8a ? since it's been a long time

[yanlingwang23]

I'm still having trouble in step yarn build-for-devtools, saw the same issue as @Biki-das

[Biki-das]

@gaearon any updates on this one!