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Resolves #5650, partially reverts https://github.com/vuejs/language-tools/pull/5632/files#diff-7918fad7f00b0ebdd36f0242099e9d5a41469117455ca22f8f79333175ab7ffc.

The getDefinitionAtPosition and findReferences functions required by Reactivity Visualization only need to be evaluated for the current file. Maintaining a single-file TypeScript Language Service instance instead of reusing tsserver's Language Service will avoid cross-file semantic analysis, thereby significantly improving performance in large projects.

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commit: 83773bc

@johnsoncodehk johnsoncodehk merged commit 3bfd059 into master Sep 22, 2025
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@johnsoncodehk johnsoncodehk deleted the single-file-ls branch September 22, 2025 14:23
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