| yarn run start | fails on Windows



2 years ago
a year ago


(Reporter: KWierso, Assigned: emorley)


(Depends on: 1 bug, Blocks: 2 bugs)



(1 attachment)



2 years ago
$ yarn run start
yarn run v0.21.3
$ ./node_modules/neutrino/bin/neutrino start --presets ./neutrino-custom/development.js
'.\node_modules\neutrino\bin\neutrino' is not recognized as an internal or external command,
operable program or batch file.
error Command failed with exit code 1.
info Visit https://yarnpkg.com/en/docs/cli/run for documentation about this command.

16:29:22 <&emorley|pto> you need to yarn install
16:29:33 <&emorley|pto> either outside the VM or by running vagrant provision
16:29:59 <&emorley|pto> if you had a node_modules directory from ages ago, you might need to remove that in case it has cruft in it
16:30:16 <KWierso> this is on a machine brand new as of yesterday
16:30:34 <KWierso> after doing | yarn install --no-bin-links |
16:34:49 <KWierso> neutrino is definitely in node_modules/
16:37:23 — KWierso git checkout's an older commit before the switch to neutrino
16:39:11 <&emorley|pto> so I think the issue is that Windows doesn't understand files with a shebang line
16:44:55 <&emorley|pto> npm/yarn normally create a .cmd file, but if populated via vagrant provision that's not going to happen
16:45:19 <&emorley|pto> the workaround is to prefix the script commands in package.json with "node "
16:45:38 <&emorley|pto> or to run the command from within the VM
16:46:44 <&emorley|pto> could you file a bug?
16:50:07 <&emorley|pto> https://shapeshed.com/writing-cross-platform-node/#scripts-in-package-json


2 years ago
Blocks: 1353014

Comment 1

2 years ago
FWIW, Treeherder's UI runs via yarn just fine in the Win10 Bash on Windows shell (with the recently released update to Win10), so this isn't blocking me or making me use a VM. :)

Comment 2

2 years ago
Ah good to hear.

I had a partial fix for this a few days ago (prefixing all the commands with "node "), however I discovered the commands containing environment variables don't work on Windows either, since it needs them to be of form `set FOO=bar node ...` not `FOO=bar node ...`.

One possible solution for this is a package called cross-env, however it turns out that with webpack 2 even the author recommends using the new webpack 2 `--env.foo=bar` options rather than environment variables. However Neutruino doesn't support this yet, so I've filed:

See also discussion here (since it adds environment variables to more commands, so would otherwise break more of them on Windows):


2 years ago
Assignee: nobody → emorley

Comment 3

a year ago
The new Neutrino v6 --options.env feature (https://neutrino.js.org/cli/#-options) will mean we can make package.json Windows-compatible without having to use cross-env or similar.
Depends on: 1364894
I am not able to run this on windows 10 with the bash shell:
jmaher@JMAHER-WIN10:~/home/treeherder$ yarn install --no-bin-links
yarn install v0.27.5
[1/4] Resolving packages...
success Already up-to-date.
Done in 0.90s.
jmaher@JMAHER-WIN10:~/home/treeherder$ yarn start
yarn start v0.27.5
$ ./node_modules/neutrino/bin/neutrino start --presets ./neutrino-custom/development.js
run(args._[0], [...new Set(pkgPresets.concat(args.presets))]);

SyntaxError: Unexpected token ...
    at exports.runInThisContext (vm.js:53:16)
    at Module._compile (module.js:374:25)
    at Object.Module._extensions..js (module.js:417:10)
    at Module.load (module.js:344:32)
    at Function.Module._load (module.js:301:12)
    at Function.Module.runMain (module.js:442:10)
    at startup (node.js:136:18)
    at node.js:966:3
error Command failed with exit code 1.

is it possible I have the wrong version of yarn, or node?
Flags: needinfo?(emorley)

Comment 5

a year ago
What version of node is installed? Treeherder uses 7.10.0 currently (see package.json and .travis.yml).

Currently on Windows your best bet is to just use the Vagrant environment and run `yarn start` from there.
Flags: needinfo?(emorley)

Comment 6

a year ago
s/best bet/solution with fewest hurdles/ (but I believe some people have got it working on Bash on Windows, so if you're fine with battling through, I'm happy to help :-))


a year ago
Component: Treeherder → Treeherder: Docs & Development
Created attachment 8920873 [details] [review]
[treeherder] mozilla:node-windows > mozilla:master

Comment 8

a year ago
Comment on attachment 8920873 [details] [review]
[treeherder] mozilla:node-windows > mozilla:master

This is another piece split out of the Neutrino work, to try and reduce the PR size there :-)
Attachment #8920873 - Flags: review?(cdawson)
Attachment #8920873 - Flags: review?(cdawson) → review+

Comment 9

a year ago
Commit pushed to master at https://github.com/mozilla/treeherder

Bug 1351907 - Improve yarn script Windows compatibility (#2863)

Typically the `package.json` commands call scripts that exist in the
top-level `node_modules/.bin/` directory, which are (a) already on
`PATH` when invoked by yarn, and (b) on Windows have `.cmd` script
shims that work around Windows' lack of shebang support.

However due to symlinks being problematic inside Virtualbox, we have
to use `--no-bin-links` with `yarn install`, which means the top-level
`.bin/` directory doesn't exist. As such, the `<package>/bin/` scripts
have to be used directly, which require prefixing with `node` to work
around lack of shebang support on Windows.


Note that even with these changes, the `start:stage` command will not
work due to the environment variable prefix. This will be solved by
the switch to newer Neutrino, which supports setting environment
variables using the `--options` command line parameter instead.


a year ago
Attachment #8920873 - Flags: checkin+

Comment 10

a year ago
This is mostly fixed, bug 1364894 will do the rest :-)
Last Resolved: a year ago
Resolution: --- → FIXED


a year ago
Blocks: 1416266
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