我正在开发一个 React Native 项目，如果我尝试运行react-native run-ios，我会收到以下错误，我会收到一个错误Could not find iPhone 6 simulator：
> react-native run-ios
Scanning folders for symlinks in /Users/kurtpeek/mobile/applicant-app/node_modules (16ms)
Found Xcode workspace applicant.xcworkspace
Could not find iPhone 6 simulator
但是，如果我运行，这个模拟器确实会出现xcrun simctl list --json devices，类似于在node_modules/react-native/local-cli/runIOS/runIOS.js：
> xcrun simctl list --json devices | grep "\"iPhone 6\"" -B 5 -A 5
},
{
"availability" : "(available)",
"state" : "Shutdown",
"isAvailable" : true,
"name" : "iPhone 6",
"udid" : "93E4D0AF-C267-406B-B8F5-B3B305BEBBF0",
"availabilityError" : ""
},
{
"availability" : "(available)",
runOnSimulator上述文件中的函数读取
function runOnSimulator(xcodeProject, args, scheme) {
return new Promise((resolve) => {
try {
var simulators = JSON.parse(
child_process.execFileSync('xcrun', ['simctl', 'list', '--json', 'devices'], {encoding: 'utf8'})
);
} catch (e) {
throw new Error('Could not parse the simulator list output');
}
const selectedSimulator = findMatchingSimulator(simulators, args.simulator);
if (!selectedSimulator) {
throw new Error(`Could not find ${args.simulator} simulator`);
}
因此，我想在node_modules/react-native/local-cli/runIOS/findMatchingSimulator.js. 我试过简单地把debugger声明放在里面，就像这样：
function findMatchingSimulator(simulators, simulatorName) {
debugger;
if (!simulators.devices) {
return null;
}
但这不会启动调试器（例如，import pdb; pdb.set_trace()在 Python 中设置一个）。如何调试react-nativeCLI 命令？