Cleaning in ICallable + changed fingerprint to plain char array to allow for dead object examination + additional check in FetchContext callback to avoid the unexplained rogue callbacks I have seen + protection in LoaderStateMachine::HandleSuccessMessage in case things go wrong anyway

{
    "extends" : "../../../Platforms/Wasm/tsconfig-stone",
    "compilerOptions": {
        "sourceMap": false,
        "lib" : [
            "es2017",
            "dom",
            "dom.iterable"
        ]
    }
}