Could not find iPhone 6(or any other) simulator React-Native, nothing helps? - xcode

Question

Can not run my project with iOS simulator
ISSUE,
Could not find iPhone 6(or X or any other) simulator
XCODE: 10.2
react-native: 0.52
react: ^16.0.0-alpha.12
Here is my findMatchingSimulator.js from nodemodules/react-native/local-cli/runIOS:
/**
* Copyright (c) 2015-present, Facebook, Inc.
* All rights reserved.
*
* This source code is licensed under the BSD-style license found in the
* LICENSE file in the root directory of this source tree. An additional grant
* of patent rights can be found in the PATENTS file in the same directory.*
*/
'use strict';
/**
* Takes in a parsed simulator list and the desired name, and returns an object with the matching simulator.
*
* If the simulatorName argument is null, we'll go into default mode and return the currently booted simulator, or if
* none is booted, it will be the first in the list.
*
* #param Object simulators a parsed list from `xcrun simctl list --json devices` command
* #param String|null simulatorName the string with the name of desired simulator. If null, it will use the currently
* booted simulator, or if none are booted, the first in the list.
* #returns {Object} {udid, name, version}
*/
function findMatchingSimulator(simulators, simulatorName) {
if (!simulators.devices) {
return null;
}
const devices = simulators.devices;
var match;
for (let version in devices) {
// Making sure the version of the simulator is an iOS (Removes Apple Watch, etc)
if (version.indexOf('iOS') !== 0) {
continue;
}
for (let i in devices[version]) {
let simulator = devices[version][i];
// Skipping non-available simulator
if (simulator.availability !== '(available)') {
continue;
}
// If there is a booted simulator, we'll use that as instruments will not boot a second simulator
if (simulator.state === 'Booted') {
if (simulatorName !== null) {
console.warn("We couldn't boot your defined simulator due to an already booted simulator. We are limited to one simulator launched at a time.");
}
return {
udid: simulator.udid,
name: simulator.name,
version
};
}
if (simulator.name === simulatorName && !match) {
match = {
udid: simulator.udid,
name: simulator.name,
version
};
}
// Keeps track of the first available simulator for use if we can't find one above.
if (simulatorName === null && !match) {
match = {
udid: simulator.udid,
name: simulator.name,
version
};
}
}
}
if (match) {
return match;
}
return null;
}
module.exports = findMatchingSimulator;
I tried different methods, but nothing helps.
The list of available devices specifies iPhones as “unavailable”

Answer 1

Change this line:
if (version.indexOf('iOS') !== 0) {
to this:
if (version.indexOf('com.apple.CoreSimulator.SimRuntime.iOS') !== 0) {
There was a recent change to xcode, and the simulator names are now prefixed. This solved it for me.