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for (let result of results) {
  result = otherValue;
  fn(() => {
    result;
  });
}

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This gist reproduces a bug in Yarn v0.27.5.

The bug is caused by Yarn returning exit status 0 when a script inside the package.json "scripts" causes a segmentation fault.

This only happens when there is a single command in the script (e.g.: "test": "./segfault"). When there are several commands in the script (e.g.: "test-alt": "true && ./segfault") it returns an exit status 1.

This bug causes errors to be unnoticed in CI builds, where everything seems to be OK.

Steps to reproduce:

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var domain = require('domain');
var d = domain.create();

// Example 1: callback style
d.run(() => {
  console.log('Initial domain is', process.domain);
  setTimeout(() => {
    console.log('Final domain is', process.domain); // good
  }, 1000);
});

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function executeSequentially(promises) {
  return promises.reduce(function (result, promise) {
    return result.then(promise);
  }, Promise.resolve());
}

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<ul class="customers">
  <li>John Doe</li>
  <li>Jane Dane</li>
  <li class="special-customer">
    <img class="special-customer-photo" src="//placehold.it/150x150">
    <div class="special-customer-info">
      <p>Jack Jackson</p>
      <p>Wallaby St, 42, Sydney</p>
    </div>

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function assert(condition, message) {
    if (!condition) {
        throw new Error(message || "Assertion failed");
    }
}

var setPrototypeOf = (function () {
    if (Object.setPrototypeOf) {
        return Object.setPrototypeOf;
    } else {

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var Class = Backbone.Model; // or Collection or View or Router
var MixinInitializerClass = Class.extend({
  initialize: function() {
    /* Other code */
    this.initializeMixins();
  },

  initializeMixins: function() {
    var self = this;
    var functions = _.functions(this);

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/*
 * Script to cheat SpeedSums.com test
 */


function getResult(expression){
  var regex = /\s*(\d+)\s*([^\s])\s*(\d+)/;
  var matches = regex.exec(expression);
  if (matches){
    var x = parseInt(matches[1], 10),