Diagnostics requested after saving unsaved-but-named buffer

[DanielRosenwasser]

While running with TS nightly previews

Run:

mkdir testing
cd testing
tsc --init
code-insiders ./newFile.ts

Add some code to the new file:

const x = new Map();
x.

Then save the file and the server will issue the following

[error] error handling method 'textDocument/diagnostic' (13): no project found for URI untitled:/d%3A/typescript-go/testing/test.ts

[DanielRosenwasser]

Maybe this is a different manifestation of #1771

[DanielRosenwasser]

untitled-named-file.log

[DanielRosenwasser]

Actually, it does look like it:

2026-06-17 09:04:22.955 [trace] Sending notification 'textDocument/didSave'.
Params: {
    "textDocument": {
        "uri": "file:///d%3A/typescript-go/testing/test.ts"
    }
}
2026-06-17 09:04:22.963 [trace] Sending notification 'textDocument/didChange'.
Params: {
    "textDocument": {
        "uri": "untitled:/d%3A/typescript-go/testing/test.ts",
        "version": 3
    },
    "contentChanges": [
        {
            "range": {
                "start": {
                    "line": 0,
                    "character": 0
                },
                "end": {
                    "line": 1,
                    "character": 2
                }
            },
            "rangeLength": 24,
            "text": ""
        }
    ]
}
2026-06-17 09:04:22.972 [trace] Sending notification 'textDocument/didClose'.
Params: {
    "textDocument": {
        "uri": "untitled:/d%3A/typescript-go/testing/test.ts"
    }
}
2026-06-17 09:04:22.973 [trace] Sending request 'textDocument/diagnostic - (13)'.
Params: {
    "textDocument": {
        "uri": "untitled:/d%3A/typescript-go/testing/test.ts"
    }
}