Js_exn

Provide utilities for dealing with JS exceptions.

t

type t

Represents a JS exception

asJsExn

let asJsExn: exn => option<t>

stack

let stack: t => option<string>

message

let message: t => option<string>

name

let name: t => option<string>

fileName

let fileName: t => option<string>

isCamlExceptionOrOpenVariant

let isCamlExceptionOrOpenVariant: 'a => bool

internal use only

anyToExnInternal

let anyToExnInternal: 'a => exn

anyToExnInternal obj will take any value obj and wrap it in a Js.Exn.Error if given value is not an exn already. If obj is an exn, it will return obj without any changes.

This function is mostly useful for cases where you want to unify a type of a value that potentially is either exn, a JS error, or any other JS value really (e.g. for a value passed to a Promise.catch callback)

IMPORTANT: This is an internal API and may be changed / removed any time in the future.

switch (Js.Exn.unsafeAnyToExn("test")) {
| Js.Exn.Error(v) =>
  switch(Js.Exn.message(v)) {
  | Some(str) => Js.log("We won't end up here")
  | None => Js.log2("We will land here: ", v)
  }
}

raiseError

let raiseError: string => 'a

Raise Js exception Error object with stacktrace

raiseEvalError

let raiseEvalError: string => 'a

raiseRangeError

let raiseRangeError: string => 'a

raiseReferenceError

let raiseReferenceError: string => 'a

raiseSyntaxError

let raiseSyntaxError: string => 'a

raiseTypeError

let raiseTypeError: string => 'a

raiseUriError

let raiseUriError: string => 'a