css file hash doesn't use correct path when generating-scoped-name in embroider app build, when consuming an addon using ecm

[wondersloth]

Problem

When an embroider app using ember-css-modules depends on a v1 / classic addon using ember-css-modules, the generated scoped classnames in the css file don't match the classnames injected in the templates.

Example of Bug

https://github.com/wondersloth/embroider-x-ember-css-modules

Investigation

• Only happens when doing an embroider app build with a v1 / classic addon using ecm.
• In generate-scoped-name the paths used lack the moduleName and only contains the relative path in the module.

Classic (Working)

Steps to Reproduce

$ cd packages/some-addon
$ yarn build;
$ cd ../sample-app;
$ EMBROIDER_ENABLED=false DEBUG=ember-css-modules:* JOBS=0 node ./node_modules/.bin/ember build  

OUTPUT

ember-css-modules:addon included in sample-app +0ms
ember-css-modules:addon included in some-addon +2s
ember-css-modules:output-styles-preprocessor concatenating module stylesheets: { inputFiles: [ '**/*.css' ], outputFile: 'some-addon.css', allowNone: true, sourceMapConfig: undefined } +0ms
ember-css-modules:output-styles-preprocessor concatenating module stylesheets: { inputFiles: [ '**/*.css' ], outputFile: '/assets/sample-app.css', allowNone: true, sourceMapConfig: undefined } +108ms
ember-css-modules:generate-scoped-name scoped class .greeting-container => ._greeting-container_i4dy9v (/some-addon/components/greeting.css) +0ms
ember-css-modules:generate-scoped-name scoped class .greeting-message => ._greeting-message_i4dy9v (/some-addon/components/greeting.css) +1ms
ember-css-modules:generate-scoped-name scoped class .addon-container => ._addon-container_18zxja (/some-addon/components/layout.css) +3ms
ember-css-modules:output-styles-preprocessor implicit dependencies: [] +9s
ember-css-modules:output-styles-preprocessor sorted dependencies [] +1ms
ember-css-modules:generate-scoped-name scoped class .salutation-container => ._salutation-container_148er7 (/sample-app/components/salutation.css) +1s
ember-css-modules:generate-scoped-name scoped class .salutation-message => ._salutation-message_148er7 (/sample-app/components/salutation.css) +0ms
ember-css-modules:generate-scoped-name scoped class .app-container => ._app-container_1u42fn (/sample-app/styles/application.css) +3ms
ember-css-modules:modules-preprocessor recording dependency from /var/folders/1p/grc2p_g11hz13gkj8413rqv00003jl/T/broccoli-49704yQHB67T9yf4h/out-269-module_source_funnel/sample-app/styles/application.css to /Users/medwards/Workspace/os/embroider-x-ember-css-modules/packages/some-addon/addon/components/layout.css +0ms
ember-css-modules:generate-scoped-name scoped class .addon-container => ._addon-container_18zxja (/some-addon/components/layout.css) +3ms
ember-css-modules:output-styles-preprocessor implicit dependencies: [] +3s
ember-css-modules:output-styles-preprocessor sorted dependencies [] +1ms

Embroider (Broken)

Steps to Reproduce

$ cd packages/some-addon
$ yarn build;
$ cd ../sample-app;
$ EMBROIDER_ENABLED=false DEBUG=ember-css-modules:* JOBS=0 node ./node_modules/.bin/ember build  

OUTPUT
Output from ember-css-modules

ember-css-modules:addon included in sample-app +0ms
ember-css-modules:addon included in some-addon +1s
ember-css-modules:output-styles-preprocessor concatenating module stylesheets: { inputFiles: [ '**/*.css' ], outputFile: 'some-addon.css', allowNone: true, sourceMapConfig: undefined } +0ms
ember-css-modules:output-styles-preprocessor concatenating module stylesheets: { inputFiles: [ '**/*.css' ], outputFile: '/assets/sample-app.css', allowNone: true, sourceMapConfig: undefined } +173ms
ember-css-modules:generate-scoped-name scoped class .greeting-container => ._greeting-container_1lfv76 (/components/greeting.css) +0ms
ember-css-modules:generate-scoped-name scoped class .greeting-message => ._greeting-message_1lfv76 (/components/greeting.css) +1ms
ember-css-modules:generate-scoped-name scoped class .addon-container => ._addon-container_1tmc29 (/components/layout.css) +3ms
ember-css-modules:output-styles-preprocessor implicit dependencies: [] +2s
ember-css-modules:output-styles-preprocessor sorted dependencies [] +1ms
ember-css-modules:generate-scoped-name scoped class .salutation-container => ._salutation-container_1p5xxd (/components/salutation.css) +7s
ember-css-modules:generate-scoped-name scoped class .salutation-message => ._salutation-message_1p5xxd (/components/salutation.css) +0ms
ember-css-modules:generate-scoped-name scoped class .app-container => ._app-container_1qsai7 (/styles/application.css) +4ms
ember-css-modules:modules-preprocessor recording dependency from /var/folders/1p/grc2p_g11hz13gkj8413rqv00003jl/T/broccoli-50180NUROXZ9lrujc/out-541-module_source_funnel/styles/application.css to /Users/medwards/Workspace/os/embroider-x-ember-css-modules/packages/some-addon/addon/components/layout.css +0ms
ember-css-modules:generate-scoped-name scoped class .addon-container => ._addon-container_18zxja (/some-addon/components/layout.css) +3ms
ember-css-modules:output-styles-preprocessor implicit dependencies: [] +4s
ember-css-modules:output-styles-preprocessor sorted dependencies [] +1ms

Differences

In an embroider build the file paths don't contain the the modulePrefix between classic vs embroider:

-ember-css-modules:generate-scoped-name scoped class .salutation-container => ._salutation-container_148er7 (/sample-app/components/salutation.css) +1s
+ember-css-modules:generate-scoped-name scoped class .salutation-container => ._salutation-container_1p5xxd (/components/salutation.css) +7s

vendor.css

• Note the paths are incorrect.
• Note the hashes don't match.

GOOD

/* styles for some-addon/components/greeting.css */
._greeting-container_i4dy9v {
  border: 1px dashed green;
}

._greeting-message_i4dy9v {
  color: green;
}

/* styles for some-addon/components/layout.css */
._addon-container_18zxja {
  border: 2px solid magenta !important;
}

BAD

/* styles for components/greeting.css */
._greeting-container_1lfv76 {
  border: 1px dashed green;
}

._greeting-message_1lfv76 {
  color: green;
}

/* styles for components/layout.css */
._addon-container_1tmc29 {
  border: 2px solid magenta !important;
}

[ef4]

I think embroider-build/embroider#1205 addressed this by improving embroider's compatibility.