fix(@schematics/angular): preserve blank lines in jasmine-to-vitest schematic #31560
Conversation
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
…chematic The TypeScript printer, by design, does not retain blank lines. This caused the jasmine-to-vitest refactoring schematic to produce code that lost the original file's vertical spacing, harming readability. This commit introduces a pre- and post-processing step within the main transformation function. Before parsing, blank lines are converted into unique placeholder comments. After the TypeScript printer generates the new code, these placeholders are converted back into blank lines, ensuring that the vertical formatting of the original file is preserved in the transformed output.
clydin
added
the
action: review
hybrist
approved these changes
Oct 22, 2025
clydin
added
action: merge
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
2 participants
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Outdated suggestions cannot be applied.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.
The TypeScript printer, by design, does not retain blank lines. This caused the jasmine-to-vitest refactoring schematic to produce code that lost the original file's vertical spacing, harming readability.
This commit introduces a pre- and post-processing step within the main transformation function. Before parsing, blank lines are converted into unique placeholder comments. After the TypeScript printer generates the new code, these placeholders are converted back into blank lines, ensuring that the vertical formatting of the original file is preserved in the transformed output.