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@p-szm p-szm commented Apr 19, 2022

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ghost commented Apr 19, 2022

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@typescript-bot typescript-bot added the For Uncommitted Bug PR for untriaged, rejected, closed or missing bug label Apr 19, 2022
...existingPrologue,
...prologue,
...(superStatementIndex <= existingPrologue.length ? emptyArray : visitNodes(constructor.body.statements, visitor, isStatement, existingPrologue.length, superStatementIndex)),
...(superStatementIndex <= existingPrologue.length ? emptyArray : visitNodes(constructor.body.statements, visitor, isStatement, existingPrologue.length, superStatementIndex - existingPrologue.length)),
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The last argument is count and not end, so I believe the fix is to substract the start position from here. Otherwise we're processing too many nodes (including super())

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Good catch!

@typescript-bot typescript-bot added For Milestone Bug PRs that fix a bug with a specific milestone and removed For Uncommitted Bug PR for untriaged, rejected, closed or missing bug labels Apr 19, 2022
@jakebailey jakebailey merged commit 2e619fd into microsoft:main Apr 19, 2022
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p-szm commented Apr 19, 2022

@jakebailey any chance we can port this to 4.6.x? Maybe together with #48671 which is related. It's currently blocking my team from upgrading to 4.6.x

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Yes, I think both should be backported. @DanielRosenwasser

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@typescript-bot cherry-pick this to release-4.6

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typescript-bot commented Apr 20, 2022

Heya @jakebailey, I've started to run the task to cherry-pick this into release-4.6 on this PR at 1b9a9d8. You can monitor the build here.

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Hey @jakebailey, I've opened #48780 for you.

typescript-bot pushed a commit to typescript-bot/TypeScript that referenced this pull request Apr 20, 2022
Component commits:
1b9a9d8 Fix transformed constructor code when there is code between prologue statements and super call
Jack-Works pushed a commit to Jack-Works/TypeScript that referenced this pull request Apr 22, 2022
DanielRosenwasser pushed a commit that referenced this pull request May 3, 2022
Component commits:
1b9a9d8 Fix transformed constructor code when there is code between prologue statements and super call

Co-authored-by: Patrick Szmucer <[email protected]>
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Wrong constructor code generated when target is ES5

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