Awesome
p-waterfall
Run promise-returning & async functions in series, each passing its result to the next
Install
$ npm install p-waterfall
Usage
import pWaterfall from 'p-waterfall';
const tasks = [
initialValue => getEmoji(initialValue),
previousValue => `I ❤️ ${previousValue}`
];
console.log(await pWaterfall(tasks, 'unicorn'));
//=> 'I ❤️ 🦄'
API
pWaterfall(tasks, initialValue?)
Returns a Promise
that is fulfilled when all promises returned from calling the functions in tasks
are fulfilled, or rejects if any of the promises reject. The fulfilled value is the value returned from the last task.
tasks
Type: Iterable<Function>
Functions are expected to return a value. If a Promise
is returned, it's awaited before continuing with the next task.
initialValue
Type: unknown
Value to use as previousValue
in the first task.
Related
- p-series - Run promise-returning & async functions in series
- p-each-series - Iterate over promises serially
- More…
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