Segmentation fault when tsconfig.json contains baseUrl

[sheki]

Bug Description

tsgolint crashes with a segmentation fault when processing a tsconfig.json that contains a baseUrl compiler option.

Steps to Reproduce

1. Create a minimal tsconfig.json with baseUrl:

{
    "compilerOptions": {
        "jsx": "react-jsx",
        "strict": true,
        "baseUrl": "./"
    }
}

2. Create a simple TypeScript file:

const x = 1;

3. Run tsgolint:

tsgolint

Expected Behavior

tsgolint should lint the TypeScript files without crashing.

Actual Behavior

tsgolint crashes with a segmentation fault:

panic: runtime error: invalid memory address or nil pointer dereference
[signal SIGSEGV: segmentation violation code=0x2 addr=0x0 pc=0x1013eab90]

goroutine 1 [running]:
github.com/microsoft/typescript-go/internal/compiler.(*Program).Host(0x1400015f000?)
	/home/runner/work/tsgolint/tsgolint/typescript-go/internal/compiler/program.go:292
main.runMain()
	/home/runner/work/tsgolint/tsgolint/cmd/tsgolint/main.go:414 +0x6f8
main.main()
	/home/runner/work/tsgolint/tsgolint/cmd/tsgolint/main.go:527 +0x1c

Environment

• tsgolint version: 0.5.0 (oxlint-tsgolint)
• Node version: v24.10.0
• OS: macOS 15.0.0 (Darwin Kernel Version 25.0.0)
• Architecture: arm64

[camc314]

This should be fixed in the next version. Please note that the route of using tsgolint directly (not via oxlint) is not maintained, as it is designed to be used with oxlint.