Modify synthetic default generation code for dual-mode module resolution #46156
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typescript-bot
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andrewbranch
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Oct 1, 2021
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I'm going to skip the sync. @typescript-bot cherry-pick this to release-4.5 and LKG |
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Heya @DanielRosenwasser, I've started to run the task to cherry-pick this into |
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Ah I just saw #46159. Maybe we'll do a full sync. 😭 |
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Hey @DanielRosenwasser, I've opened #46162 for you. |
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Oct 1, 2021
Component commits: 7e3a80a Modify synthetic default generation code for dual-mode module resolution
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module: node12was relying on our existingesModuleInteroplogic for determining if modules should have a syntheticdefaultmember equivalent to the module shape - this is correct for a cjs format import of another cjs file, however should be wholly disabled for esm/esm imports, and is overcomplicated for esm/cjs imports (which simply always have a synthetic default, no heuristics needed). In this PR, I add the missing logic to our synthetic default selection code to handle these new modal imports.