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async | Async utilities for node and the browser | Reactive Programming library

 by   caolan JavaScript Version: v2.3.0 License: MIT

 by   caolan JavaScript Version: v2.3.0 License: MIT

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kandi X-RAY | async Summary

async is a JavaScript library typically used in Programming Style, Reactive Programming, React, Webpack, Nodejs applications. async has no bugs, it has a Permissive License and it has medium support. However async has 1 vulnerabilities. You can install using 'npm i everythingstays-async' or download it from GitHub, npm.
Async is a utility module which provides straight-forward, powerful functions for working with asynchronous JavaScript. Although originally designed for use with Node.js and installable via npm i async, it can also be used directly in the browser. A ESM/MJS version is included in the main async package that should automatically be used with compatible bundlers such as Webpack and Rollup. A pure ESM version of Async is available as async-es. For Documentation, visit https://caolan.github.io/async/.
Support
Support
Quality
Quality
Security
Security
License
License
Reuse
Reuse

kandi-support Support

  • async has a medium active ecosystem.
  • It has 27509 star(s) with 2436 fork(s). There are 680 watchers for this library.
  • It had no major release in the last 12 months.
  • There are 5 open issues and 1092 have been closed. On average issues are closed in 73 days. There are 10 open pull requests and 0 closed requests.
  • It has a neutral sentiment in the developer community.
  • The latest version of async is v2.3.0
async Support
Best in #Reactive Programming
Average in #Reactive Programming
async Support
Best in #Reactive Programming
Average in #Reactive Programming

quality kandi Quality

  • async has 0 bugs and 0 code smells.
async Quality
Best in #Reactive Programming
Average in #Reactive Programming
async Quality
Best in #Reactive Programming
Average in #Reactive Programming

securitySecurity

  • async has 1 vulnerability issues reported (0 critical, 1 high, 0 medium, 0 low).
  • async code analysis shows 0 unresolved vulnerabilities.
  • There are 0 security hotspots that need review.
async Security
Best in #Reactive Programming
Average in #Reactive Programming
async Security
Best in #Reactive Programming
Average in #Reactive Programming

license License

  • async is licensed under the MIT License. This license is Permissive.
  • Permissive licenses have the least restrictions, and you can use them in most projects.
async License
Best in #Reactive Programming
Average in #Reactive Programming
async License
Best in #Reactive Programming
Average in #Reactive Programming

buildReuse

  • async releases are available to install and integrate.
  • Deployable package is available in npm.
  • Installation instructions are not available. Examples and code snippets are available.
  • async saves you 346 person hours of effort in developing the same functionality from scratch.
  • It has 829 lines of code, 0 functions and 170 files.
  • It has low code complexity. Code complexity directly impacts maintainability of the code.
async Reuse
Best in #Reactive Programming
Average in #Reactive Programming
async Reuse
Best in #Reactive Programming
Average in #Reactive Programming
Top functions reviewed by kandi - BETA

kandi has reviewed async and discovered the below as its top functions. This is intended to give you an instant insight into async implemented functionality, and help decide if they suit your requirements.

  • Executes a set of tasks in parallel
  • Queue task queue
  • Creates a new benchmark object
  • Async iterator function .
  • Retry a task
  • loop for each element
  • Pushes task queue
  • Injects the passed functions into an array of functions that are passed to the callback function .
  • build member navigation
  • Insert new data into the queue

async Key Features

Async utilities for node and the browser

default

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// for use with Node-style callbacks...
var async = require("async");

var obj = {dev: "/dev.json", test: "/test.json", prod: "/prod.json"};
var configs = {};

async.forEachOf(obj, (value, key, callback) => {
    fs.readFile(__dirname + value, "utf8", (err, data) => {
        if (err) return callback(err);
        try {
            configs[key] = JSON.parse(data);
        } catch (e) {
            return callback(e);
        }
        callback();
    });
}, err => {
    if (err) console.error(err.message);
    // configs is now a map of JSON data
    doSomethingWith(configs);
});

Cannot read properties of undefined (reading 'transformFile') at Bundler.transformFile

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  "engines": {
    "node": "<17",
    "npm": "<8.2"
  },
-----------------------
> nvm list // to see all available node version

> nvm install 16.13.0 // to install the version I wanted 

> nvm use 16.13.0  // use the installed version 
OR
> nvm alias default 16 // use the installed version as DEFAULT 
-----------------------
wget -qO- https://raw.githubusercontent.com/nvm-sh/nvm/v0.39.1/install.sh | bash
curl -o- https://raw.githubusercontent.com/nvm-sh/nvm/v0.39.1/install.sh | bash
nvm -v
nvm install 16.13.0
nvm use 16.13.0
-----------------------
wget -qO- https://raw.githubusercontent.com/nvm-sh/nvm/v0.39.1/install.sh | bash
curl -o- https://raw.githubusercontent.com/nvm-sh/nvm/v0.39.1/install.sh | bash
nvm -v
nvm install 16.13.0
nvm use 16.13.0
-----------------------
wget -qO- https://raw.githubusercontent.com/nvm-sh/nvm/v0.39.1/install.sh | bash
curl -o- https://raw.githubusercontent.com/nvm-sh/nvm/v0.39.1/install.sh | bash
nvm -v
nvm install 16.13.0
nvm use 16.13.0
-----------------------
wget -qO- https://raw.githubusercontent.com/nvm-sh/nvm/v0.39.1/install.sh | bash
curl -o- https://raw.githubusercontent.com/nvm-sh/nvm/v0.39.1/install.sh | bash
nvm -v
nvm install 16.13.0
nvm use 16.13.0
-----------------------
wget -qO- https://raw.githubusercontent.com/nvm-sh/nvm/v0.39.1/install.sh | bash
curl -o- https://raw.githubusercontent.com/nvm-sh/nvm/v0.39.1/install.sh | bash
nvm -v
nvm install 16.13.0
nvm use 16.13.0

Error when trying to run my React Native app on Android

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allprojects {
    repositories {
        mavenCentral()
        mavenLocal()
        jcenter()
}
-----------------------
allprojects {
    repositories {
        .... # Keep the rest
        jcenter() {
            content {
                includeModule("com.yqritc", "android-scalablevideoview")
            }
        }
    }
}
-----------------------
allprojects {
    repositories {
        .... # Keep the rest
        jcenter() {
            content {
                includeModule("com.yqritc", "android-scalablevideoview")
            }
        }
    }
}

Error [ERR_REQUIRE_ESM]: require() of ES Module not supported

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import fetch from "node-fetch";
-----------------------
 { 
   "type": "module",
 }
-----------------------
// const fetch = require('node-fetch');
import fetch from "node-fetch";

How to prevent actor reentrancy resulting in duplicative requests?

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actor ImageDownloader {
    private var cache: [URL: Image] = [:]
    private var tasks: [URL: Task<Image, Error>] = [:]

    func image(from url: URL) async throws -> Image {
        if let image = try await tasks[url]?.value {
            print("found request")
            return image
        }

        if let cached = cache[url] {
            print("found cached")
            return cached
        }

        let task = Task {
            try await download(from: url)
        }

        tasks[url] = task
        defer { tasks[url] = nil }

        let image = try await task.value
        cache[url] = image

        return image
    }

    private func download(from url: URL) async throws -> Image {
        let (data, response) = try await URLSession.shared.data(from: url)
        guard
            let response = response as? HTTPURLResponse,
            200 ..< 300 ~= response.statusCode,
            let image = Image(data: data)
        else {
            throw URLError(.badServerResponse)
        }
        return image
    }
}
-----------------------
actor ImageDownloader {
    private enum ImageStatus {
        case downloading(_ task: Task<UIImage, Error>)
        case downloaded(_ image: UIImage)
    }
    
    private var cache: [URL: ImageStatus] = [:]
    
    func image(from url: URL) async throws -> UIImage {
        if let imageStatus = cache[url] {
            switch imageStatus {
            case .downloading(let task):
                return try await task.value
            case .downloaded(let image):
                return image
            }
        }
        
        let task = Task {
            try await downloadImage(url: url)
        }
        
        cache[url] = .downloading(task)
        
        do {
            let image = try await task.value
            cache[url] = .downloaded(image)
            return image
        } catch {
            // If an error occurs, we will evict the URL from the cache
            // and rethrow the original error.
            cache.removeValue(forKey: url)
            throw error
        }
    }
    
    private func downloadImage(url: URL) async throws -> UIImage {
        let imageRequest = URLRequest(url: url)
        let (data, imageResponse) = try await URLSession.shared.data(for: imageRequest)
        guard let image = UIImage(data: data), (imageResponse as? HTTPURLResponse)?.statusCode == 200 else {
            throw ImageDownloadError.badImage
        }
        return image
    }
}
-----------------------
actor ImageDownloader {

    private enum CacheEntry {
        case inProgress(Task<Image, Error>)
        case ready(Image)
    }

    private var cache: [URL: CacheEntry] = [:]

    func image(from url: URL) async throws -> Image? {
        if let cached = cache[url] {
            switch cached {
            case .ready(let image):
                return image
            case .inProgress(let task):
                return try await task.value
            }
        }

        let task = Task {
            try await downloadImage(from: url)
        }

        cache[url] = .inProgress(task)

        do {
            let image = try await task.value
            cache[url] = .ready(image)
            return image
        } catch {
            cache[url] = nil
            throw error
        }
    }
}

Why does the thread sanitizer complain about acquire/release thread fences?

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atomic_base.h:133:26: warning: 'atomic_thread_fence' is not supported with '-fsanitize=thread' [-Wtsan]
  133 |   { __atomic_thread_fence(int(__m)); }
      |     ~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~
while (a.load(std::memory_order_relaxed) != from) {}
__tsan_acquire(&a); // <--
std::atomic_thread_fence(std::memory_order_acquire);
-----------------------
atomic_base.h:133:26: warning: 'atomic_thread_fence' is not supported with '-fsanitize=thread' [-Wtsan]
  133 |   { __atomic_thread_fence(int(__m)); }
      |     ~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~
while (a.load(std::memory_order_relaxed) != from) {}
__tsan_acquire(&a); // <--
std::atomic_thread_fence(std::memory_order_acquire);

FirebaseOptions cannot be null when creating the default app

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void main() async {
  WidgetsFlutterBinding.ensureInitialized();
  await Firebase.initializeApp(
    // Replace with actual values
    options: FirebaseOptions(
      apiKey: "XXX",
      appId: "XXX",
      messagingSenderId: "XXX",
      projectId: "XXX",
    ),
  );
  runApp(MyApp());
}
dart pub global activate flutterfire_cli
flutterfire configure
void main() async {
  WidgetsFlutterBinding.ensureInitialized();
  await Firebase.initializeApp(
    options: DefaultFirebaseOptions.currentPlatform,
  );
  runApp(MyApp());
}
  <script src="https://www.gstatic.com/firebasejs/8.6.1/firebase-app.js"></script>
  <script src="https://www.gstatic.com/firebasejs/8.6.1/firebase-analytics.js"></script>
  <script>
    var firebaseConfig = {
      apiKey: "xxx",
      authDomain: "xxx",
      projectId: "xx",
      storageBucket: "exxx",
      messagingSenderId: "xxx",
      appId: "xxx",
      measurementId: "xxx"
    };

    firebase.initializeApp(firebaseConfig);
    firebase.analytics();
  </script>
-----------------------
void main() async {
  WidgetsFlutterBinding.ensureInitialized();
  await Firebase.initializeApp(
    // Replace with actual values
    options: FirebaseOptions(
      apiKey: "XXX",
      appId: "XXX",
      messagingSenderId: "XXX",
      projectId: "XXX",
    ),
  );
  runApp(MyApp());
}
dart pub global activate flutterfire_cli
flutterfire configure
void main() async {
  WidgetsFlutterBinding.ensureInitialized();
  await Firebase.initializeApp(
    options: DefaultFirebaseOptions.currentPlatform,
  );
  runApp(MyApp());
}
  <script src="https://www.gstatic.com/firebasejs/8.6.1/firebase-app.js"></script>
  <script src="https://www.gstatic.com/firebasejs/8.6.1/firebase-analytics.js"></script>
  <script>
    var firebaseConfig = {
      apiKey: "xxx",
      authDomain: "xxx",
      projectId: "xx",
      storageBucket: "exxx",
      messagingSenderId: "xxx",
      appId: "xxx",
      measurementId: "xxx"
    };

    firebase.initializeApp(firebaseConfig);
    firebase.analytics();
  </script>
-----------------------
void main() async {
  WidgetsFlutterBinding.ensureInitialized();
  await Firebase.initializeApp(
    // Replace with actual values
    options: FirebaseOptions(
      apiKey: "XXX",
      appId: "XXX",
      messagingSenderId: "XXX",
      projectId: "XXX",
    ),
  );
  runApp(MyApp());
}
dart pub global activate flutterfire_cli
flutterfire configure
void main() async {
  WidgetsFlutterBinding.ensureInitialized();
  await Firebase.initializeApp(
    options: DefaultFirebaseOptions.currentPlatform,
  );
  runApp(MyApp());
}
  <script src="https://www.gstatic.com/firebasejs/8.6.1/firebase-app.js"></script>
  <script src="https://www.gstatic.com/firebasejs/8.6.1/firebase-analytics.js"></script>
  <script>
    var firebaseConfig = {
      apiKey: "xxx",
      authDomain: "xxx",
      projectId: "xx",
      storageBucket: "exxx",
      messagingSenderId: "xxx",
      appId: "xxx",
      measurementId: "xxx"
    };

    firebase.initializeApp(firebaseConfig);
    firebase.analytics();
  </script>
-----------------------
void main() async {
  WidgetsFlutterBinding.ensureInitialized();
  await Firebase.initializeApp(
    // Replace with actual values
    options: FirebaseOptions(
      apiKey: "XXX",
      appId: "XXX",
      messagingSenderId: "XXX",
      projectId: "XXX",
    ),
  );
  runApp(MyApp());
}
dart pub global activate flutterfire_cli
flutterfire configure
void main() async {
  WidgetsFlutterBinding.ensureInitialized();
  await Firebase.initializeApp(
    options: DefaultFirebaseOptions.currentPlatform,
  );
  runApp(MyApp());
}
  <script src="https://www.gstatic.com/firebasejs/8.6.1/firebase-app.js"></script>
  <script src="https://www.gstatic.com/firebasejs/8.6.1/firebase-analytics.js"></script>
  <script>
    var firebaseConfig = {
      apiKey: "xxx",
      authDomain: "xxx",
      projectId: "xx",
      storageBucket: "exxx",
      messagingSenderId: "xxx",
      appId: "xxx",
      measurementId: "xxx"
    };

    firebase.initializeApp(firebaseConfig);
    firebase.analytics();
  </script>
-----------------------
void main() async {
  WidgetsFlutterBinding.ensureInitialized();
  await Firebase.initializeApp(
    // Replace with actual values
    options: FirebaseOptions(
      apiKey: "XXX",
      appId: "XXX",
      messagingSenderId: "XXX",
      projectId: "XXX",
    ),
  );
  runApp(MyApp());
}
dart pub global activate flutterfire_cli
flutterfire configure
void main() async {
  WidgetsFlutterBinding.ensureInitialized();
  await Firebase.initializeApp(
    options: DefaultFirebaseOptions.currentPlatform,
  );
  runApp(MyApp());
}
  <script src="https://www.gstatic.com/firebasejs/8.6.1/firebase-app.js"></script>
  <script src="https://www.gstatic.com/firebasejs/8.6.1/firebase-analytics.js"></script>
  <script>
    var firebaseConfig = {
      apiKey: "xxx",
      authDomain: "xxx",
      projectId: "xx",
      storageBucket: "exxx",
      messagingSenderId: "xxx",
      appId: "xxx",
      measurementId: "xxx"
    };

    firebase.initializeApp(firebaseConfig);
    firebase.analytics();
  </script>
-----------------------
 class Configurations {
      static const _apiKey = "Your values";
      static const _authDomain = "Your values";
      static const _projectId = "Your values";
      static const _storageBucket = "Your values"
      static const _messagingSenderId ="Your values"
      static const _appId = "Your values"
    
//Make some getter functions
      String get apiKey => _apiKey;
      String get authDomain => _authDomain;
      String get projectId => _projectId;
      String get storageBucket => _storageBucket;
      String get messagingSenderId => _messagingSenderId;
      String get appId => _appId;
    }
lib/config
import 'config/config.dart';

final configurations = Configurations();
Future<void> init() async {
        await Firebase.initializeApp(
            options: FirebaseOptions(
                apiKey: configurations.apiKey,
                appId: configurations.appId,
                messagingSenderId: configurations.messagingSenderId,
                projectId: configurations.projectId));
-----------------------
 class Configurations {
      static const _apiKey = "Your values";
      static const _authDomain = "Your values";
      static const _projectId = "Your values";
      static const _storageBucket = "Your values"
      static const _messagingSenderId ="Your values"
      static const _appId = "Your values"
    
//Make some getter functions
      String get apiKey => _apiKey;
      String get authDomain => _authDomain;
      String get projectId => _projectId;
      String get storageBucket => _storageBucket;
      String get messagingSenderId => _messagingSenderId;
      String get appId => _appId;
    }
lib/config
import 'config/config.dart';

final configurations = Configurations();
Future<void> init() async {
        await Firebase.initializeApp(
            options: FirebaseOptions(
                apiKey: configurations.apiKey,
                appId: configurations.appId,
                messagingSenderId: configurations.messagingSenderId,
                projectId: configurations.projectId));
-----------------------
 class Configurations {
      static const _apiKey = "Your values";
      static const _authDomain = "Your values";
      static const _projectId = "Your values";
      static const _storageBucket = "Your values"
      static const _messagingSenderId ="Your values"
      static const _appId = "Your values"
    
//Make some getter functions
      String get apiKey => _apiKey;
      String get authDomain => _authDomain;
      String get projectId => _projectId;
      String get storageBucket => _storageBucket;
      String get messagingSenderId => _messagingSenderId;
      String get appId => _appId;
    }
lib/config
import 'config/config.dart';

final configurations = Configurations();
Future<void> init() async {
        await Firebase.initializeApp(
            options: FirebaseOptions(
                apiKey: configurations.apiKey,
                appId: configurations.appId,
                messagingSenderId: configurations.messagingSenderId,
                projectId: configurations.projectId));

How can I get values from input components (study purposes)?

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import React, { useState } from 'react';
import { TextInput } from 'react-native';

const createInitialState = (inputList) => {
  return inputList.reduce((accumulator, currentValue) => {
    return {
      ...accumulator,
      [currentValue.field]: '',
    };
  }, {});
};


const SomeScreen = () => {
  const initialDataPassed = [
    {
      '_id': '618e4c23db08f70b719f3655',
      'author': 'adicionarei posteriormente',
      'ceatedAt': '2021-11-12 08:12:32',
      'field': 'abc',
      'fieldType': 'Text',
    }, {
      '_id': '618e4c9ddb08f70b719fae37',
      'author': 'adicionarei posteriormente',
      'ceatedAt': '2021-11-12 08:14:35',
      'field': 'Animal',
      'fieldType': 'Text',
    },
    {
      '_id': '618e4c9ddb08f70b719fae37',
      'author': 'adicionarei posteriormente',
      'ceatedAt': '2021-11-12 08:14:35',
      'field': 'Animal',
      'fieldType': 'Number',
    },
  ];

  return (
    <Form inputList={initialDataPassed} />
  );
};

const Form = ({ inputList }) => {
  const [formState, setFormState] = useState(createInitialState(inputList));

  return (
    <>
      {inputList.map((item) => {
        const handleTextInputValueChange = (text) => {
          // this is solution is better if we base on old value
          setFormState(oldState => ({
            ...oldState,
            [item.field]: text
          }))
        };

        return <Input key={item.field} value={formState[item.field]} onChangeText={handleTextInputValueChange} fieldType={item.fieldType} />
      })}
    </>
  );
};


const Input = ({value, onChangeText, fieldType}) => {
  const keyboardType = fieldType === 'Number' ? 'numeric' : undefined;

  return <TextInput value={value} keyboardType={keyboardType} onChangeText={onChangeText} />
};
-----------------------

    const Input = ({value,keyboardType,onChange})=>{
      return(
        <TextInput value={value} keyboardType={keyboardType} onChangeText={onChange} /> 
      )
    }


    const [payload,setPayload] = useState({});

    const onValue=(e,field)=>{
      let tempPayload = {...payload};
      tempPayload[field] = e;
      setPayload(tempPayload)
    }


    const renderComponent = (fieldObj)=>{
      switch(fieldObj.type):
        case "Text":
          return <Input keyboardType="default" onChange={(e)=>onValue(e,fieldObj.field)} value={payload[fieldObj.field]||""}/>
        case "Number":
          return <Input keyboardType="numeric" onChange={(e)=>onValue(e,fieldObj.field)} value={payload[fieldObj.field]||""} />
        case "Dropdown":
          return <Dropdown options={fieldObj.options} />  //if you want to add dropdown, radio buttons etc in future
    }

{
  'Animal':'Tiger',
  'Car':'BMW'
}
-----------------------

    const Input = ({value,keyboardType,onChange})=>{
      return(
        <TextInput value={value} keyboardType={keyboardType} onChangeText={onChange} /> 
      )
    }


    const [payload,setPayload] = useState({});

    const onValue=(e,field)=>{
      let tempPayload = {...payload};
      tempPayload[field] = e;
      setPayload(tempPayload)
    }


    const renderComponent = (fieldObj)=>{
      switch(fieldObj.type):
        case "Text":
          return <Input keyboardType="default" onChange={(e)=>onValue(e,fieldObj.field)} value={payload[fieldObj.field]||""}/>
        case "Number":
          return <Input keyboardType="numeric" onChange={(e)=>onValue(e,fieldObj.field)} value={payload[fieldObj.field]||""} />
        case "Dropdown":
          return <Dropdown options={fieldObj.options} />  //if you want to add dropdown, radio buttons etc in future
    }

{
  'Animal':'Tiger',
  'Car':'BMW'
}
-----------------------
const inputTypesMapper = {
  Numeric: "number",
  Text: "text",
  Boolean: "checkbox"
};
<div className="App">
 {data.message.map(({ fieldtype, field }) => (
   <input type={inputTypesMapper[fieldtype]} defaultValue={field} />
 ))}
</div>
const inputTypesMapper = {
  Text: ({ value }) => {
    return <input type={"text"} defaultValue={value} />;
  },
  MultipleOptions: ({ value }) => {
    return (
      <select>
        {value.map(({ id, value }) => {
          return <option value={id}>{value}</option>;
        })}
      </select>
    );
  }
};
  return (
    <div className="App">
      {data.message.map(({ fieldtype, field }) => {
        const renderInput = inputTypesMapper[fieldtype];

        return renderInput({ value: field });
      })}
    </div>
  );
-----------------------
const inputTypesMapper = {
  Numeric: "number",
  Text: "text",
  Boolean: "checkbox"
};
<div className="App">
 {data.message.map(({ fieldtype, field }) => (
   <input type={inputTypesMapper[fieldtype]} defaultValue={field} />
 ))}
</div>
const inputTypesMapper = {
  Text: ({ value }) => {
    return <input type={"text"} defaultValue={value} />;
  },
  MultipleOptions: ({ value }) => {
    return (
      <select>
        {value.map(({ id, value }) => {
          return <option value={id}>{value}</option>;
        })}
      </select>
    );
  }
};
  return (
    <div className="App">
      {data.message.map(({ fieldtype, field }) => {
        const renderInput = inputTypesMapper[fieldtype];

        return renderInput({ value: field });
      })}
    </div>
  );
-----------------------
const inputTypesMapper = {
  Numeric: "number",
  Text: "text",
  Boolean: "checkbox"
};
<div className="App">
 {data.message.map(({ fieldtype, field }) => (
   <input type={inputTypesMapper[fieldtype]} defaultValue={field} />
 ))}
</div>
const inputTypesMapper = {
  Text: ({ value }) => {
    return <input type={"text"} defaultValue={value} />;
  },
  MultipleOptions: ({ value }) => {
    return (
      <select>
        {value.map(({ id, value }) => {
          return <option value={id}>{value}</option>;
        })}
      </select>
    );
  }
};
  return (
    <div className="App">
      {data.message.map(({ fieldtype, field }) => {
        const renderInput = inputTypesMapper[fieldtype];

        return renderInput({ value: field });
      })}
    </div>
  );
-----------------------
const inputTypesMapper = {
  Numeric: "number",
  Text: "text",
  Boolean: "checkbox"
};
<div className="App">
 {data.message.map(({ fieldtype, field }) => (
   <input type={inputTypesMapper[fieldtype]} defaultValue={field} />
 ))}
</div>
const inputTypesMapper = {
  Text: ({ value }) => {
    return <input type={"text"} defaultValue={value} />;
  },
  MultipleOptions: ({ value }) => {
    return (
      <select>
        {value.map(({ id, value }) => {
          return <option value={id}>{value}</option>;
        })}
      </select>
    );
  }
};
  return (
    <div className="App">
      {data.message.map(({ fieldtype, field }) => {
        const renderInput = inputTypesMapper[fieldtype];

        return renderInput({ value: field });
      })}
    </div>
  );

Ping Tasks will not complete

copy iconCopydownload iconDownload
    async Task Main()
    {
        var masterCts = new CancellationTokenSource(TimeSpan.FromSeconds(15)); // 15s overall timeout
        
        var localMachines = new List<LocalMachine>
        {       
            new LocalMachine("192.0.0.1", false), // Should be not known - TimedOut
            new LocalMachine("192.168.86.88", false), // Should be not known - DestinationHostUnreachable (when timeout is 8000)
            new LocalMachine("www.dfdfsdfdfdsgrdf.cdcc", false), // Should be not known - status Unknown because of PingException
            new LocalMachine("192.168.86.87", false) // Known - my local IP
        };

        var results = new List<PingerResult>();

        try
        {
            // Create the "hot" tasks
            var tasks = localMachines.Where(m => !m.Online)
                                    .Select(m => new Pinger().SendPingAsync(m.HostOrAddress, 8000, masterCts.Token))
                                    .ToArray();

            await Task.WhenAll(tasks);
            
            results.AddRange(tasks.Select(t => t.Result));
        }
        finally
        {
            results.ForEach(r => localMachines.Single(m => m.HostOrAddress.Equals(r.HostOrAddress)).Online = r.Status == IPStatus.Success);

            results.Dump();  // For LINQPad
            localMachines.Dump(); // For LINQPad

            results.Clear();
        }
    }

    public class LocalMachine
    {
        public LocalMachine(string hostOrAddress, bool online)
        {
            HostOrAddress = hostOrAddress;
            Online = online;
        }

        public string HostOrAddress { get; }

        public bool Online { get; set; }
    }

    public class PingerResult
    {
        public string HostOrAddress {get;set;}
        
        public IPStatus Status {get;set;}
    }

    public class Pinger 
    {
        public async Task<PingerResult> SendPingAsync(string hostOrAddress, int timeout, CancellationToken token)
        {
            // Check if timeout has occurred
            token.ThrowIfCancellationRequested();

            IPStatus status = default;

            try
            {
                var reply = await SendPingInternal(hostOrAddress, timeout, token);
                status = reply.Status;
            }
            catch (PingException)
            {               
                status = IPStatus.Unknown;
            }
            
            return new PingerResult
            {
                HostOrAddress = hostOrAddress,
                Status = status
            };
        }

        // Wrap the legacy EAP pattern offered by Ping.
        private Task<PingReply> SendPingInternal(string hostOrAddress, int timeout, CancellationToken cancelToken)
        {
            var tcs = new TaskCompletionSource<PingReply>();

            if (cancelToken.IsCancellationRequested)
            {
                tcs.TrySetCanceled();
            }   
            else
            {
                using (var ping = new Ping())
                {
                    ping.PingCompleted += (object sender, PingCompletedEventArgs e) =>
                    {
                        if (!cancelToken.IsCancellationRequested)
                        {
                            if (e.Cancelled)
                            {
                                tcs.TrySetCanceled();
                            }
                            else if (e.Error != null)
                            {
                                tcs.TrySetException(e.Error);
                            }
                            else
                            {
                                tcs.TrySetResult(e.Reply);
                            }
                        }
                    };
                    
                    cancelToken.Register(() => { tcs.TrySetCanceled(); });

                    ping.SendAsync(hostOrAddress, timeout, new object());
                }
            };

            return tcs.Task;
        }
    }

React hooks: Why do several useState setters in an async function cause several rerenders?

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import { unstable_batchedUpdates } from "react-dom";

const handleClickAsync = () => {
  setTimeout(() => {
    unstable_batchedUpdates(() => {
      setValue("two");
      setIsCondition(true);
      setNumber(2);    
    });
  });
};

How can I add unique keys to React/MUI Autocomplete component?

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<Autocomplete
  renderOption={(props, option) => {
    return (
      <li {...props} key={option.id}>
        {option.name}
      </li>
    );
  }}
  renderInput={(params) => <TextField {...params} label="Movie" />}
/>
<Box component='li' key={key} {...props}
<Box component='li' {...props} key={key}
-----------------------
<Autocomplete
  renderOption={(props, option) => {
    return (
      <li {...props} key={option.id}>
        {option.name}
      </li>
    );
  }}
  renderInput={(params) => <TextField {...params} label="Movie" />}
/>
<Box component='li' key={key} {...props}
<Box component='li' {...props} key={key}
-----------------------
<Autocomplete
  renderOption={(props, option) => {
    return (
      <li {...props} key={option.id}>
        {option.name}
      </li>
    );
  }}
  renderInput={(params) => <TextField {...params} label="Movie" />}
/>
<Box component='li' key={key} {...props}
<Box component='li' {...props} key={key}

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QUESTION

Cannot read properties of undefined (reading 'transformFile') at Bundler.transformFile

Asked 2022-Mar-29 at 12:36

I have updated node today and I'm getting this error:

error: TypeError: Cannot read properties of undefined (reading 'transformFile')
    at Bundler.transformFile (/Users/.../node_modules/metro/src/Bundler.js:48:30)
    at runMicrotasks (<anonymous>)
    at processTicksAndRejections (node:internal/process/task_queues:96:5)
    at async Object.transform (/Users/.../node_modules/metro/src/lib/transformHelpers.js:101:12)
    at async processModule (/Users/.../node_modules/metro/src/DeltaBundler/traverseDependencies.js:137:18)
    at async traverseDependenciesForSingleFile (/Users/.../node_modules/metro/src/DeltaBundler/traverseDependencies.js:131:3)
    at async Promise.all (index 0)
    at async initialTraverseDependencies (/Users/.../node_modules/metro/src/DeltaBundler/traverseDependencies.js:114:3)
    at async DeltaCalculator._getChangedDependencies (/Users/.../node_modules/metro/src/DeltaBundler/DeltaCalculator.js:164:25)
    at async DeltaCalculator.getDelta (/Users/.../node_modules/metro/src/DeltaBundler/DeltaCalculator.js:94:16)

Other than that I haven't done anything unusual, so I'm not sure what to share. If I'm missing any info please comment and I'll add it.

While building the terminal also throws this error:

Failed to construct transformer:  Error: error:0308010C:digital envelope routines::unsupported
    at new Hash (node:internal/crypto/hash:67:19)
    at Object.createHash (node:crypto:130:10)
    at stableHash (/Users/.../node_modules/metro-cache/src/stableHash.js:19:8)
    at Object.getCacheKey (/Users/.../node_modules/metro-transform-worker/src/index.js:593:7)
    at getTransformCacheKey (/Users/.../node_modules/metro/src/DeltaBundler/getTransformCacheKey.js:24:19)
    at new Transformer (/Users/.../node_modules/metro/src/DeltaBundler/Transformer.js:48:9)
    at /Users/.../node_modules/metro/src/Bundler.js:22:29
    at processTicksAndRejections (node:internal/process/task_queues:96:5) {
  opensslErrorStack: [ 'error:03000086:digital envelope routines::initialization error' ],
  library: 'digital envelope routines',
  reason: 'unsupported',
  code: 'ERR_OSSL_EVP_UNSUPPORTED'
}

My node, npx and react-native versions are:

  • node: 17.0.0
  • npx: 8.1.0
  • react-native-cli: 2.0.1

ANSWER

Answered 2021-Oct-27 at 17:19

Ran into the same issue with Node.js 17.0.0. To solve it, I downgraded to version 14.18.1, deleted node_modules and reinstalled.

Source https://stackoverflow.com/questions/69647332

Community Discussions, Code Snippets contain sources that include Stack Exchange Network

Vulnerabilities

No vulnerabilities reported

Install async

You can install using 'npm i everythingstays-async' or download it from GitHub, npm.

Support

For any new features, suggestions and bugs create an issue on GitHub. If you have any questions check and ask questions on community page Stack Overflow .

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