typelock= {name:string,mode:lockMode}

typelockGrantedCallback=lock=>promise<JSON.t>

typelockInfo= {
mutablename?:string,
mutablemode?:lockMode,
mutableclientId?:string,
}

typelockManager= {}

typelockManagerSnapshot= {
mutableheld?:array<lockInfo>,
mutablepending?:array<lockInfo>,
}

typelockMode=
| @as("exclusive")Exclusive
| @as("shared")Shared

typelockOptions= {
mutablemode?:lockMode,
mutableifAvailable?:bool,
mutablesteal?:bool,
mutablesignal?:WebAPI.EventAPI.abortSignal,
}