Warning when registering plugin using baseDir if broccoli-rollup is installed

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Assessment

Difficulty
3/5
Estimated time
1-2 days
Newbie friendliness
38/100
Issue type
Bug
Clarity
Mostly clear
Activity status
Stale
Tech stack
javascript
Domain
build-system

Research direction

Reproduce the warning with the setupPreprocessorRegistry example in the preprocess-rollup addon while broccoli-rollup is installed, then run ember serve. Trace how the baseDir registration is handled during preprocessing and verify that the warning disappears without removing baseDir or broccoli-rollup.

Written by the indexing model from the issue text.

Description

When attempting to add a plugin

setupPreprocessorRegistry(type, registry) {
    registry.add('htmlbars-ast-plugin', {
      baseDir() {
        return __dirname;
      },
    });
  },

if broccoli-rollup is installed then when running ember serve I get the message:
Warning: failed to stat /preprocess-rollup/node_modules/broccoli-rollup/tmp/rollup-input_base_path-6obEeBLr.tmp/0

If I remove broccoli-rollup or remove the baseDir

setupPreprocessorRegistry(type, registry) {
    registry.add('htmlbars-ast-plugin', {});
},

Then no warning is printed.

This is reproducible in a brand new addon like https://github.com/jrjohnson/preprocess-rollup (addon doesn't do anything and the plugin itself won't work since it doesn't exist, bu the message is obvious.

I'm running into this while working on https://github.com/FortAwesome/ember-fontawesome/pull/21

Dominant language
JavaScript
Stars
77
Forks
65
PR merge metrics
No merged PRs in 30d

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