www.aleph1.co.uk Git - yaffs-website/blob - node_modules/loud-rejection/index.js

   1 'use strict';
   2 var util = require('util');
   3 var onExit = require('signal-exit');
   4 var currentlyUnhandled = require('currently-unhandled');
   5
   6 var installed = false;
   7
   8 module.exports = function (log) {
   9         if (installed) {
  10                 return;
  11         }
  12
  13         installed = true;
  14
  15         log = log || console.error;
  16
  17         var listUnhandled = currentlyUnhandled();
  18
  19         onExit(function () {
  20                 var unhandledRejections = listUnhandled();
  21
  22                 if (unhandledRejections.length > 0) {
  23                         unhandledRejections.forEach(function (x) {
  24                                 var err = x.reason;
  25
  26                                 if (!(err instanceof Error)) {
  27                                         err = new Error('Promise rejected with value: ' + util.inspect(err));
  28                                 }
  29
  30                                 log(err.stack);
  31                         });
  32
  33                         process.exitCode = 1;
  34                 }
  35         });
  36 };