Fix incorrect parser error assumption in semicolon handling leading to incremental parser brokenness#48067
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jakebailey merged 2 commits intomicrosoft:mainfrom Mar 1, 2022
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…o incremental parser brokenness
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RyanCavanaugh
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@typescript-bot cherry-pick this to release-4.6 |
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Heya @DanielRosenwasser, I've started to run the task to cherry-pick this into |
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Hey @DanielRosenwasser, I've opened #48068 for you. |
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…e-4.6 (#48068) Co-authored-by: Jake Bailey <5341706+jakebailey@users.noreply.github.com>
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#43005 added special handling for missing semicolons to attempt to produce better errors. Unfortunately, it made an incorrect assumption about when the tokenizer would have already reported an error. This led to a class node with a syntax error being created without the flag noting that it contained an error (there's an initializer, but there's not a brace after it), which then led to the incremental parser trying to use that node rather than deciding it was unsafe.
Just remove this assumption; this fixes the new test case, and only reverts one error change introduced in #43005 (which doesn't seem correct to me anyway).
Fixes #47895