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Staging repo for development of native port of TypeScript

Results 434 typescript-go issues
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Anything more is just waste. May be useless in the future if we start treating checkers as an external resource to a Program (and thus the limitation would be put...

## Steps to reproduce Import something from 'socket.io/dist/namespace' ## Behavior with `[email protected]` Build correctly without errors ## Behavior with `tsgo` Give an error like: "TS2307: This could be one of...

Fixes #1894 ![semantic-tokens-2](https://github.com/user-attachments/assets/609a9c9c-317d-4843-bf1a-f55a4058df01) I am a little scared of this one. VS Code seems to ask for doc highlights, semantic tokens, diags, all in quick succession. All three of those...

Handle file casing when creating program so that we dont add duplicate files that only differ in casing on case insesitive file system. This also adds checks for `forceConsistentCasingInFileNames` Fixes...

I started to get this error today after updating vscode extension to this version: ``` Identifier typescriptteam.native-preview Version 0.20250821.1 Last Updated 2025-08-21, 09:18:07 ``` ``` No overload matches this call....

Domain: Type Checking
Type Ordering

This PR extensively revises our type-only import/export alias checking to not depend on full type checks. With the PR, it is no longer necessary to fully type-check all files in...

Tracking issue for support on the LSP [`workspace/diagnostics`](https://microsoft.github.io/language-server-protocol/specifications/lsp/3.17/specification/#workspace_diagnostic) request. Getting this working would be a major win over `typescript-language-server` and `vtsls` to get project wide diagnostics in editors where all...

Domain: Editor

Now that the main extension handles this gracefully, I think we should stop force disabling it in our launch options, instead allowing things to proceed but warning if `tsgo` is...

### Extension Version 0.20251123.1 ### VS Code Version 1.107.0-insider ### Operating system Version Windows_NT x64 10.0.26220 ### Steps to reproduce 1. Using the https://github.com/gitkraken/vscode-gitlens codebase 2. Open a file with...

Domain: Editor

Can't give precise details, but I found this on a large MS internal codebase just trying a basic compile. ``` panic: Unknown parent for parameter: KindArrowFunction goroutine 678979 [running]: github.com/microsoft/typescript-go/internal/transformers/declarations.getParameterDeclarationTypeVisibilityDiagnosticMessage(0x0?,...

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