https://github.com/spudnyk/async-wrappers

Various functions for asynchronous operations
https://github.com/spudnyk/async-wrappers

async async-functions debounce javascript promise throttle

Last synced: about 2 months ago
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Various functions for asynchronous operations

• Host: GitHub
• URL: https://github.com/spudnyk/async-wrappers
• Owner: SpudNyk
• License: mit
• Created: 2019-06-06T18:02:16.000Z (over 5 years ago)
• Default Branch: master
• Last Pushed: 2023-01-06T02:00:29.000Z (almost 2 years ago)
• Last Synced: 2024-11-09T21:44:32.585Z (about 2 months ago)
• Topics: async, async-functions, debounce, javascript, promise, throttle
• Language: TypeScript
• Homepage: https://spudnyk.github.io/async-wrappers
• Size: 2.21 MB
• Stars: 0
• Watchers: 0
• Forks: 0
• Open Issues: 16
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

Awesome Lists containing this project

README

        
# async-wrappers

Implementations of debounce, throttle, retry and more targeted to promises/async/await.

## Key Features

1. call argument aggregation - all arguments from calls to the wrapper can be combined for the call to the wrapped function, using a supplied argument reducer function. See the api documentation for supplied reducers.

2. call return values - calls to the wrapper will return a promise to wrapped function's result.

3. delay times of 0 are still asynchronous and will resolve on the next runtime loop.

## Documentation

See the [API](https://spudnyk.github.io/async-wrappers/api/).

## Example

```javascript

const { debounce, combineArguments } = require('async-wrappers');

const data = {

    1: 'data 1',

    2: 'data 2'

    //...

};

// this could be fetching from a database or webservice

// debounce supports async functions or returned promises

const getByIds = ids => {

    console.log(`Getting: ${JSON.stringify(ids)}`);

    const keyed = {};

    // this could be a server request

    for (const id of ids) {

        keyed[id] = data[id];

    }

    return keyed;

};

// data loader equivalent

const load = debounce(getByIds, 0, {

    reducer: combineArguments

});

const loadData = async id => {

    const data = await load(id);

    return data[id];

};

const main = async () => {

    const foo = loadData(2);

    const bar = loadData(1);

    const baz = loadData(3);

    console.log(`Foo: ${await foo}`);

    console.log(`Bar: ${await bar}`);

    console.log(`Baz: ${await baz}`);

};

main();

// Outputs:

// Getting: [2,1,3]

// Foo: data 2

// Bar: data 1

// Baz: undefined

```