Weird issue when referencing `document` in callback of will-destroy

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Assessment

Difficulty
4/5
Estimated time
3-5 days
Newbie friendliness
35/100
Issue type
Bug
Clarity
Needs clarification
Activity status
Stale
Tech stack
babel, typescript
Domain
build-system, frontend

Research direction

Start with the reproduction in ember-basic-dropdown PR #449 and compare the build with and without the global document reference in the will-destroy callback. Trace the failure through the will-destroy modifier and the generated component code; done means the reproduction compiles and the callback no longer throws ReferenceError: document is not defined.

Written by the indexing model from the issue text.

Description

I'm not sure how/if this is really related to the modifiers, but I haven't been able to reproduce it without them. I believe it's some kind of interaction between babel/decorators/modifiers.

Apparently if in the callback passed to {{will-destroy}} I use the global document without having referenced it elsewhere, the compilation blows badly:

ReferenceError: document is not defined
    at BasicDropdownTrigger.removeGlobalHandlers (/var/folders/bt/62lj_mr106zbk82m8kl772b00000gn/T/broccoli-9932Xc3l4ZKiotlD/out-271-broccoli_merge_trees/assets/addon-tree-output/ember-basic-dropdown/components/basic-dropdown-trigger.js:140:1)
    at Object.destroyModifier (/var/folders/bt/62lj_mr106zbk82m8kl772b00000gn/T/broccoli-9932Xc3l4ZKiotlD/out-271-broccoli_merge_trees/assets/addon-tree-output/@ember/render-modifiers/modifiers/will-destroy.js:26:1)
    at CustomModifierState.destroy (/var/folders/bt/62lj_mr106zbk82m8kl772b00000gn/T/broccoli-9932Xc3l4ZKiotlD/out-271-broccoli_merge_trees/assets/vendor/ember-modifier-manager-polyfill.js:58:1)
    at SimpleBlockTracker.destroy (/var/folders/bt/62lj_mr106zbk82m8kl772b00000gn/T/broccoli-9932Xc3l4ZKiotlD/out-271-broccoli_merge_trees/assets/@glimmer/runtime.js:2411:1)
    at UpdatableBlockTracker.destroy (/var/folders/bt/62lj_mr106zbk82m8kl772b00000gn/T/broccoli-9932Xc3l4ZKiotlD/out-271-broccoli_merge_trees/assets/@glimmer/runtime.js:2411:1)

The reproduction can be this PR: https://github.com/cibernox/ember-basic-dropdown/pull/449

If (this line)[https://github.com/cibernox/ember-basic-dropdown/pull/449/files#diff-e8b1232b23cd9aba9a4b4c3f74b118fcR18] referencing the global document is removed the code fails to compile.

Dominant language
TypeScript
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Forks
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