Error using filter with name-only attributes

[MattMS]

Pug Version: 1.0.0-alpha6

Node Version: 8.9.4

Detailed version information

• "jstransformer-stylus": "^1.5.0",
• "pug-cli": "^1.0.0-alpha6"

Node 8 Docker Image (Debian Jessie)
https://github.com/nodejs/docker-node/blob/8498ff5302c19506c9edc3ce152f2bd4aa6b26b3/8/Dockerfile

Input Pug

Fails:

stylus(compress)

Passes:

stylus(compress=true)

Error

/srv/node_modules/pug-filters/lib/handle-filters.js:100
throw error('FILTER_OPTION_NOT_CONSTANT', ex.message + ' All filters are rendered compile-time so filter options must be constants.', node);

Trace

Step #1: true is not constant. All filters are rendered compile-time so filter options must be constants.
Step #1: at makeError (/srv/node_modules/pug-error/index.js:32:13)
Step #1: at /srv/node_modules/pug-filters/lib/handle-filters.js:100:15
Step #1: at Array.forEach (<anonymous>)
Step #1: at getAttributes (/srv/node_modules/pug-filters/lib/handle-filters.js:95:14)
Step #1: at walk.includeDependencies (/srv/node_modules/pug-filters/lib/handle-filters.js:23:19)
Step #1: at walkAST (/srv/node_modules/pug-walk/index.js:23:18)
Step #1: at /srv/node_modules/pug-walk/index.js:104:20
Step #1: at Array.reduce (<anonymous>)
Step #1: at walkAndMergeNodes (/srv/node_modules/pug-walk/index.js:103:18)
Step #1: at walkAST (/srv/node_modules/pug-walk/index.js:37:19)
Step #1: npm ERR! code ELIFECYCLE
Step #1: npm ERR! errno 1

Additional Comments

This seems to work on my local machine, but fails during Google Cloud Build process.

My local machine: Node 8.9.4 on Windows Subsystem for Linux (bash).
Pug and JS Transformer versions are the same.

[MattMS]

Error seems to be thrown by this line:
attrs[attr.name] = constantinople.toConstant(attr.val);

https://github.com/pugjs/pug/blob/master/packages/pug-filters/lib/handle-filters.js#L97

[ForbesLindesay]

Please try using pug 2.0.0-rc.4 and see if you can still reproduce the error.

[MattMS]

This still fails after adding pug 2.0.0-rc.4.

I added "pug": "^2.0.0-rc.4" as a dependency beside the existing "pug-cli": "^1.0.0-alpha6".
It fails with the same error, as above.

[MattMS]

Does the pug dependency of pug-cli need to be updated?

It is currently ^2.0.0-alpha7, and I'm not sure how those semver extensions are handled by Node.