Eleventy 1.0.1-canary.3 tries to process my config files even though I've told it not to

[MWDelaney]

Describe the bug
I believe this is due to the intricacies of my setup, but here we go anyway:
On the ZeroPoint dev branch I've configured two custom template languages, scss and js.

Upgrading from 1.0 to 1.0.1-canary.3 causes the previously working template language configs to fail with errors similar to the following:

[11ty] 1. Having trouble rendering js template ./src/config/collections.js (via TemplateContentRenderError)
[11ty] 2. Having trouble compiling template ./src/config/collections.js (via TemplateContentCompileError)
[11ty] 3. Cannot use 'in' operator to search for 'then' in undefined (via TypeError)

This appears to be because Eleventy is ignoring the json file I put in the config directory which had been working to exclude config in 1.0.

This is a difficult situation to describe helpfully so please let me know what I can do to better illuminate the issue.

To Reproduce
Steps to reproduce the behavior:

1. Clone ZeroPoint and checkout the dev branch
2. Upgrade Eleventy to 1.0.1-canary.3 in package.json and run npm install to install the updated dependencies
3. Run npm run dev
4. See error

Expected behavior
Eleventy 1.0.1 should ignore the javascript files in config like 1.0 did

Environment:

• OS and Version: Mac
• Eleventy Version 1.0 and 1.0.1-canary.3

Thanks!

[pdehaan]

Weird.
I was able to reproduce in 1.0.1-canary.3 and 2.0.0-canary.2, but not in 1.0.0.
But if I remember correctly, I was seeing the error in my log was "./src/config/filters.js"

[schneyra]

I have a similar error in 2.0.0-canary.4 with my custom extension handler for .scss-files. It tries to compile files that should not be compiled.

[zachleat]

There are a few different ways to opt out processing a template. Note that permalink: false does not opt out of processing (only prevents writing a template to disk) and is superfluous if you’re already ignoring a template.

Typically you’d added a glob to via standard ignore conventions (.eleventyignore or eleventyConfig.ignores): https://www.11ty.dev/docs/ignores/

But, in this specific case, you can return a falsy value from the compile function in your custom template language options. AND we had a regression in the fix for #2217 for this specific issue, so I appreciate you filing it! Definitely want to get this patched for 1.0.1.

Related: https://www.11ty.dev/docs/languages/custom/#compile

[zachleat]

This will ship with 1.0.1 and 2.0.0-canary.5