npm package discovery and stats viewer.

Discover Tips

  • General search

    [free text search, go nuts!]

  • Package details

    pkg:[package-name]

  • User packages

    @[username]

Sponsor

Optimize Toolset

I’ve always been into building performant and accessible sites, but lately I’ve been taking it extremely seriously. So much so that I’ve been building a tool to help me optimize and monitor the sites that I build to make sure that I’m making an attempt to offer the best experience to those who visit them. If you’re into performant, accessible and SEO friendly sites, you might like it too! You can check it out at Optimize Toolset.

About

Hi, 👋, I’m Ryan Hefner  and I built this site for me, and you! The goal of this site was to provide an easy way for me to check the stats on my npm packages, both for prioritizing issues and updates, and to give me a little kick in the pants to keep up on stuff.

As I was building it, I realized that I was actually using the tool to build the tool, and figured I might as well put this out there and hopefully others will find it to be a fast and useful way to search and browse npm packages as I have.

If you’re interested in other things I’m working on, follow me on Twitter or check out the open source projects I’ve been publishing on GitHub.

I am also working on a Twitter bot for this site to tweet the most popular, newest, random packages from npm. Please follow that account now and it will start sending out packages soon–ish.

Open Software & Tools

This site wouldn’t be possible without the immense generosity and tireless efforts from the people who make contributions to the world and share their work via open source initiatives. Thank you 🙏

© 2024 – Pkg Stats / Ryan Hefner

blend-promise-utils-es5

v1.24.1

Published

Lodash-like utilities for dealing with promises

Downloads

7

Readme

blend-promise-utils-es5

This is the ES5 version of the original blend-promise-utils. All tests are passed.

Using this package results in much smaller bundle size compared to the original package because no polyfill except Promise is required! Also an ES Module bundle is included.


promise-utils

Build Status Coverage Status Minzipped size

Promise-utils is a dependency-free JavaScript/TypeScript library that provides Lodash-like utility functions for dealing with native ES6 promises.

Installation

$ npm install blend-promise-utils

Usage Example

const promiseUtils = require('blend-promise-utils')
const { promises: fs } = require('fs')
const request = require('request-promise-native');
const isEmpty = require('lodash.isempty');

const MS_IN_SECOND = 1000;

async function main() {
  const cachedResponse = promiseUtils.memoize(
    async (contents) => request(contents.url),
    contents => contents.url,
    15 * MS_IN_SECOND // contents could change
  );

  const fileContents = await promiseUtils.map(
    ['file1', 'file2', 'file3'],
    async fileName => {
      const rawData = await fs.readFile(fileName);
      return JSON.parse(rawData);
    },
  );

  while (true) {
    await promiseUtils.delay(150); // avoid slamming CPU

    await promiseUtils.mapSeries(
      fileContents,
      async contents => {
        const remoteData = await cachedResponse(contents);

        const { results, errors } = await promiseUtils.settleAll([
          asyncFunction1(),
          asyncFunction2(),
          asyncFunction3(),
        ]);

        if (!isEmpty(errors)) {
          throw new Error(`Unable to settle all functions: ${JSON.stringify(errors)}`);
        } else {
          return results;
        }
      }
    )
  }

  await promiseUtils.retry(flakyFunction, { maxAttempts: 3, delayMs: 150 })(flakyFunctionArgument);

  await promiseUtils.timeout(longFunction, 60 * MS_IN_SECOND)(longFunctionArgument);
}

main()

API

Test

$ npm test

Documentation

Build docs

$ make docs

Push docs to Github

$ make push-docs

License

MIT