navtree combines grandchilden symbols with same name

[mjbvz]

From microsoft/vscode#54364

TypeScript Version: 3.0.0-dev.20180713

Search Terms:

• navtree

Code
Run navtree on the following js document:

const o = {
    a: {
        c() {}
    },
    b: {
        c() {}
    }
}

Expected behavior:
Separate entries for both instances of c are returned.

Actual behavior:
A combined entry with bothc is returned (note the "spans"), suggesting that these two symbols are the same

Result: {
    "text": "<global>",
    "kind": "script",
    "kindModifiers": "",
    "spans": [
        {
            "start": {
                "line": 1,
                "offset": 1
            },
            "end": {
                "line": 8,
                "offset": 2
            }
        }
    ],
    "childItems": [
        {
            "text": "o",
            "kind": "const",
            "kindModifiers": "",
            "spans": [
                {
                    "start": {
                        "line": 1,
                        "offset": 7
                    },
                    "end": {
                        "line": 8,
                        "offset": 2
                    }
                }
            ],
            "nameSpan": {
                "start": {
                    "line": 1,
                    "offset": 7
                },
                "end": {
                    "line": 1,
                    "offset": 8
                }
            },
            "childItems": [
                {
                    "text": "c",
                    "kind": "method",
                    "kindModifiers": "",
                    "spans": [
                        {
                            "start": {
                                "line": 3,
                                "offset": 9
                            },
                            "end": {
                                "line": 3,
                                "offset": 15
                            }
                        },
                        {
                            "start": {
                                "line": 6,
                                "offset": 9
                            },
                            "end": {
                                "line": 6,
                                "offset": 15
                            }
                        }
                    ],
                    "nameSpan": {
                        "start": {
                            "line": 3,
                            "offset": 9
                        },
                        "end": {
                            "line": 3,
                            "offset": 10
                        }
                    }
                }
            ]
        }
    ]
}

Playground Link:

Related Issues: