typeerrorCallback=WebAPI.Prelude.domException=>unit

typefileSystem= {
name:string,
root:fileSystemDirectoryEntry,
}

typefileSystemDirectoryEntry= {
isFile:bool,
isDirectory:bool,
name:string,
fullPath:string,
filesystem:fileSystem,
}

typefileSystemDirectoryReader= {}

typefileSystemEntriesCallback=array<
fileSystemEntry,
>=>unit

typefileSystemEntry= {
isFile:bool,
isDirectory:bool,
name:string,
fullPath:string,
filesystem:fileSystem,
}

typefileSystemEntryCallback=fileSystemEntry=>unit

typefileSystemFlags= {
mutablecreate?:bool,
mutableexclusive?:bool,
}