With d37076a we updated to use TS 3.1 to build VS Code. As part of this upgrade, I added a few any casts to workaround typing error in our code. These casts unblock the build but should be addressed and removed

Please address the comment in this file: https://github.com/Microsoft/vscode/blob/d37076a5967dd09868b34215cabbbca51444d10c/extensions/json-language-features/client/src/utils/hash.ts#L26