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1-js/11-async/05-promise-api
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`‎1-js/11-async/05-promise-api/article.md‎`

Lines changed: 4 additions & 4 deletions

Original file line number	Diff line number	Diff line change
@@ -179,10 +179,10 @@ If the browser doesn't support `Promise.allSettled`, it's easy to polyfill:
`179`	`179`	`if(!Promise.allSettled) {`
`180`	`180`	`Promise.allSettled = function(promises) {`
`181`	`181`	`return Promise.all(promises.map(p => Promise.resolve(p).then(value => ({`
`182`		`- state: 'fulfilled',`
	`182`	`+ status: 'fulfilled',`
`183`	`183`	`value`
`184`	`184`	`}), reason => ({`
`185`		`- state: 'rejected',`
	`185`	`+ status: 'rejected',`
`186`	`186`	`reason`
`187`	`187`	`}))));`
`188`	`188`	`};`
`@@ -191,7 +191,7 @@ if(!Promise.allSettled) {`
`191`	`191`
`192`	`192`	In this code, `promises.map` takes input values, turns them into promises (just in case a non-promise was passed) with `p => Promise.resolve(p)`, and then adds `.then` handler to every one.
`193`	`193`
`194`		-That handler turns a successful result `value` into `{state:'fulfilled', value}`, and an error `reason` into `{state:'rejected', reason}`. That's exactly the format of `Promise.allSettled`.
	`194`	+That handler turns a successful result `value` into `{status:'fulfilled', value}`, and an error `reason` into `{status:'rejected', reason}`. That's exactly the format of `Promise.allSettled`.
`195`	`195`
`196`	`196`	Now we can use `Promise.allSettled` to get the results of all given promises, even if some of them reject.
`197`	`197`
@@ -277,7 +277,7 @@ There are 5 static methods of `Promise` class:
`277`	`277`
`278`	`278`	1. `Promise.all(promises)` -- waits for all promises to resolve and returns an array of their results. If any of the given promises rejects, it becomes the error of `Promise.all`, and all other results are ignored.
`279`	`279`	2. `Promise.allSettled(promises)` (recently added method) -- waits for all promises to settle and returns their results as an array of objects with:
`280`		- - `state`: `"fulfilled"` or `"rejected"`
	`280`	+ - `status`: `"fulfilled"` or `"rejected"`
`281`	`281`	- `value` (if fulfilled) or `reason` (if rejected).
`282`	`282`	3. `Promise.race(promises)` -- waits for the first promise to settle, and its result/error becomes the outcome.
`283`	`283`	4. `Promise.resolve(value)` -- makes a resolved promise with the given value.

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