fix: update lineMap after altering source.text #2837
Merged
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
Fixes #2680.
I debugged through the compilation process and found that
source.lineMap
never gets recomputed aftersource.text
is updated. This causes wrong source lines getting mapped into 3rd field of each segment(a.k.a the line in the original source, see spec for more details) when the sourcemap is generated against out dated lineMap.Here is an example before the fix:

And here is after the fix:

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.