Welcome to the documentation page for ompromises! In this guide, you’ll find detailed information about the ompromises library and how to use it effectively in your projects.
Table of Contents
About ompromises
ompromises is a powerful JavaScript library that provides utilities for dealing with promises. It offers a variety of features and functions to simplify asynchronous programming and streamline the management of promises.
Key features of ompromises:
- Promise composition
- Promise chaining
- Error handling and propagation
- Promise transformation
- Concurrency control
Installation
You can install ompromises using npm, the Node.js package manager. Open your terminal and run the following command:
“`shell
npm install ompromises
“`
Getting Started
Once you have ompromises installed in your project, you can start using its powerful features. To begin, include the ompromises module in your code:
“`javascript
const ompromises = require(‘ompromises’);
“`
Usage
ompromises provides a wide range of functions and methods to work with promises effectively. Here are some common use cases:
Promise Composition
To compose multiple promises and handle them collectively, you can utilize the following ompromises functions:
.all(promises)
: Returns a promise that is resolved with an array of fulfillment values when all promises in the input array have fulfilled..race(promises)
: Returns a promise that is settled with the fulfillment value or rejection reason of the first promise that settles.
Promise Chaining
Promise chaining allows you to perform a sequence of tasks in a specified order by chaining multiple promises. ompromises offers the following methods for promise chaining:
.then(onFulfilled, onRejected)
: Appends fulfillment and rejection handlers to the promise and returns a new promise resolving to the handler’s return value..catch(onRejected)
: Appends a rejection handler callback to the promise and returns a new promise resolving to the handler’s return value..finally(onFinally)
: Appends a handler callback to the promise that is invoked when the promise is settled, whether fulfilled or rejected.
Error Handling
ompromises simplifies error handling and propagation in promise-based code. The library offers the following functions to handle and propagate errors:
.tryCatch(promiseFn, errorHandler)
: Executes a promise-returning function and catches any potential errors..withCatch(promiseFn, errorHandler)
: Executes a promise-returning function and handles any errors without propagating them.
Promise Transformation
ompromises includes functions to transform promises and handle their results:
.map(promises, mapper)
: Evaluates an array of promises and transforms their fulfillment values using a mapper function..filter(promises, predicate)
: Evaluates an array of promises and filters their fulfillment values using a predicate function..reduce(promises, reducer, initialValue)
: Reduces an array of promises to a single value using a reducer function.
Concurrency Control
ompromises enables you to control the concurrency of executing promises in parallel:
.limit(promises, limit)
: Executes a collection of promises in parallel, limiting the concurrency to the specified limit.
API Reference
For detailed information on all available functions and methods, please refer to the ompromises API reference.
Examples
Here are a few examples to illustrate how to use ompromises in your projects:
Example 1: Promises Composition
// Example code here
Example 2: Promise Chaining
// Example code here
Contributing
Contributions to ompromises are welcome! To contribute, please follow the guidelines outlined in the contributing guide.
License
ompromises is released under the MIT License.