[
    {
        "type": "interface",
        "name": "HeaderMap",
        "partial": false,
        "members": [],
        "inheritance": null,
        "extAttrs": [{
            "name": "MapClass",
            "arguments": null,
            "typePair": [{
                    "sequence": false,
                    "nullable": false,
                    "array": false,
                    "union": false,
                    "idlType": "DOMString"
                },
                {
                    "sequence": false,
                    "nullable": false,
                    "array": false,
                    "union": false,
                    "idlType": "DOMString"
            }]
        }]
    }
]

[
    {
        "type": "interface",
        "name": "HeaderMap",
        "partial": false,
        "members": [],
        "inheritance": null,
        "extAttrs": [{
            "name": "MapClass",
            "arguments": null,
            "typePair": [{
                    "sequence": false,
                    "promise": false,
                    "nullable": false,
                    "array": false,
                    "union": false,
                    "idlType": "DOMString"
                },
                {
                    "sequence": false,
                    "promise": false,
                    "nullable": false,
                    "array": false,
                    "union": false,
                    "idlType": "DOMString"
            }]
        }]
    }
]

Fix broken tests due to landing support for Promises.
Fix broken tests due to landing support for Promises.
