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blend-promise-utils-es5
Advanced tools
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 is a dependency-free JavaScript/TypeScript library that provides Lodash-like utility functions for dealing with native ES6 promises.
$ npm install blend-promise-utils
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()
$ npm test
Build docs
$ make docs
Push docs to Github
$ make push-docs
FAQs
Lodash-like utilities for dealing with promises
The npm package blend-promise-utils-es5 receives a total of 7 weekly downloads. As such, blend-promise-utils-es5 popularity was classified as not popular.
We found that blend-promise-utils-es5 demonstrated a not healthy version release cadence and project activity because the last version was released a year ago. It has 1 open source maintainer collaborating on the project.
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