Prefer {} type to any type

[OliverJAsh]

any disables type checking, so any usage of an any expression will be unsafe. For example:

task.tryCatch(() => Promise.resolve(1), error => {
  // unsafe!
  return error.foo.bar
})

For this reason it is preferable to use the empty object type {}.

For more information on the differences between any and {}, and the how they are often misunderstood, see microsoft/TypeScript#9999 (comment).

Would you be happy for us to change some instances of any to {}? For example, in the onrejected function parameter of task.tryCatch:.

This would mean the above example would error unless the user widens the type (e.g. using user-defined type guards):

task.tryCatch(() => Promise.resolve(1), error => {
  // compile error
  return error.foo.bar
})

[gcanti]

LGTM