Fix duplicate module detection #7333
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thymikee
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Nov 6, 2018
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SimenB
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rubennorte
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Nov 7, 2018
| @@ -108,18 +108,25 @@ const object = data => Object.assign(Object.create(null), data); | |||
| const createMap = obj => new Map(Object.keys(obj).map(key => [key, obj[key]])); | |||
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| // Jest toEqual does not match Map instances from different contexts | |||
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@mjesun do you think we should fix this in Jest matchers? Given it's a very unfrequent use case we might just use this solution.
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This pull request has been automatically locked since there has not been any recent activity after it was closed. Please open a new issue for related bugs. |
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Summary
Some code in the haste map checked if the module ID changed to determine if the file should be rechecked for duplication or not. The module ID isn't available at that point (it's extracted later from the filename) so it was returning all the files all the time.
Also improved the data structure used to store those deprecated files to remove the number of newly allocated objects.
Test plan
Updated tests.