let asFileSystemEntry: WebAPI.FileAndDirectoryEntriesAPI.fileSystemDirectoryEntry => WebAPI.FileAndDirectoryEntriesAPI.fileSystemEntry
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let createReader: WebAPI.FileAndDirectoryEntriesAPI.fileSystemDirectoryEntry => WebAPI.FileAndDirectoryEntriesAPI.fileSystemDirectoryReader
let getDirectory: ( WebAPI.FileAndDirectoryEntriesAPI.fileSystemDirectoryEntry, ~path: string=?, ~options: WebAPI.FileAndDirectoryEntriesAPI.fileSystemFlags=?, ~successCallback: WebAPI.FileAndDirectoryEntriesAPI.fileSystemEntryCallback=?, ~errorCallback: WebAPI.FileAndDirectoryEntriesAPI.errorCallback=?,) => unit
let getFile: ( WebAPI.FileAndDirectoryEntriesAPI.fileSystemDirectoryEntry, ~path: string=?, ~options: WebAPI.FileAndDirectoryEntriesAPI.fileSystemFlags=?, ~successCallback: WebAPI.FileAndDirectoryEntriesAPI.fileSystemEntryCallback=?, ~errorCallback: WebAPI.FileAndDirectoryEntriesAPI.errorCallback=?,) => unit
let getParent: ( WebAPI.FileAndDirectoryEntriesAPI.fileSystemDirectoryEntry, ~successCallback: WebAPI.FileAndDirectoryEntriesAPI.fileSystemEntryCallback=?, ~errorCallback: WebAPI.FileAndDirectoryEntriesAPI.errorCallback=?,) => unit