MozProfilerCommand = (
  mozProfiler.IsActive //
  mozProfiler.Start //
  mozProfiler.Stop
)

MozProfilerResult = (
  mozProfiler.IsActiveResult /
  mozProfiler.StartResult /
  mozProfiler.StopResult
)

mozProfiler.IsActive = (
  method: "moz:profiler.isActive",
  params: EmptyParams,
)

mozProfiler.IsActiveResult = {
  active: bool,
}

mozProfiler.Start = (
  method: "moz:profiler.start",
  params: mozProfiler.StartParameters
)

mozProfiler.StartParameters = {
  (mozProfiler.StartParametersPreset // mozProfiler.StartParametersOptions),
  ? activeContext: browsingContext.BrowsingContext,
}

mozProfiler.StartParametersPreset = (
  preset: text,
)

mozProfiler.StartParametersOptions = (
  entries: js-uint,
  interval: js-uint,
  features: [*text],
  threads: [*text],
)

mozProfiler.StartResult = EmptyResult

mozProfiler.Stop = (
  method: "moz:profiler.stop",
  params: mozProfiler.StopParameters
)

mozProfiler.StopParameters = {
  ? discard: bool .default false
}

mozProfiler.StopResult = {
  path: text / null,
}