microsoft / microsoft/TypeScript
[CLI] "@" character removed when it's first path character with --build
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Description
### 🔎 Search Terms
"cli", "tsc", "build mode", "path"
### 🕗 Version & Regression Information
- This changed between versions 3.0 and 3.1 (LOL) and continue to 5.9.2
### ⏯ Playground Link
https://github.com/GongT/issues/tree/typescript-path-at-char
### 💻 Code
```bash
# all this is ok
tsc -p @scoped/package/src
tsc -b xxx@yyy/package/src
cd @scoped ; tsc -p package/src
# this is not
tsc -b @scoped/package/src
```
### 🙁 Actual behavior
error TS5083: Cannot read file 'scoped/package/src'.
### 🙂 Expected behavior
It should read `@scoped/package/src(/tsconfig.json)`
### Additional information about the issue
_No response_
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start by reproducing the reported behavior with `tsc -b @scoped/package/src`, then compare it with the working `tsc -p @scoped/package/src` cases. The fix is done when build mode preserves the leading `@` and reads `@scoped/package/src/tsconfig.json` as expected.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- typescript
- Domain
- build-system, cli
- Issue type
- Bug
- Difficulty
- 3/5
- Estimated time
- 1-2 days
- Activity status
- Stale
- Clarity
- Clearly specified
- Newbie friendliness
- 45/100