Executes an array of promises in batches.
Arguments:
- size The size of each batch
- promiseFunctions An array of functions that return promises
- onBatchCompleteCallback (optional) A function that gets called when a batch is completed
Example:
const promiseBatch = require('./promisebatch.js')
const arr = [3, 2, 1, 6, 5, 4, 9, 8, 7, 10]
promiseBatch(3, arr.map(a => () => new Promise((resolve, reject) => {
setTimeout(() => {
console.log(a)
resolve()
}, a * 100)
})), () => console.log('Batch complete'))
.then(() => {
console.log('All done')
})Result:
1
2
3
Batch complete
4
5
6
Batch complete
7
8
9
Batch complete
10
Batch complete
All done