slow

keep your pants on, javascript

npm install slow

Run a function in parallel, without going too fast.

Give it an array, and a function that returns a Promise.

then it tells you when it's done.

useful for courteous use of a web-service, or avoiding a blown-stack.

``js
const slow = require('slow')

const randomWait = i => {
return new Promise(resolve => {
setTimeout(() => resolve(i), Math.random() * 3000)
})
}
slow.walk([1, 2, 3, 4, 5, 6], randomWait).then(res => {
console.log('done!')
console.log(res) //[1,2,3,4,5,6]
})
`

or, if you prefer, as async/await

`js
;(async () => {
let res = await slow.walk(['larry', 'curly', 'moe'], randomWait)
// ['larry', 'curly', 'moe']
})()
`

results are always in order.

one bad async call will not throw the whole operation, either.

#### Methods:

- slow.crawl(arr, fn) - max 3
- slow.walk(arr, fn) - max 5
- slow.run(arr, fn) - max 10
- slow.sprint(arr, fn) - max 15
- slow.one(arr, fn) - max 1
- slow.two(arr, fn) - max 2

#### In the browser:

`html


``

$3

- async/maplimit
- dbrockman/promise-map-limit
- addaleax/promise-ratelimit

MIT