59 lines
958 B
Markdown
59 lines
958 B
Markdown
---
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title: bluebird.js
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layout: default
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---
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Also see the [promise cheatsheet](promise.html).
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{:.center.brief-intro}
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```js
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promise
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.then(okFn, errFn)
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.spread(okFn, errFn) //*
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.catch(errFn)
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.catch(TypeError, errFn) //*
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.finally(fn) //*
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.map(function (e) { ... })
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.each(function (e) { ... })
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```
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### Simultaneous promises (array)
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```js
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Promise.any(promises) // succeeds if one succeeds first
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.then(...)
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```
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### Simultaneous promises (object)
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```js
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Promise.props({
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photos: get('photos'),
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posts: get('posts')
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})
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.then(function (res) {
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res.photos
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res.posts
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})
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```
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### Chain of promises
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```js
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Promise.try(function () {
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if (err) throw new Error("boo");
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return result;
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});
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```
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### Working with node-style functions
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```js
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var readFile = Promise.promisify(fs.readFile);
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var fs = Promise.promisifyAll(require('fs'));
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```
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## References
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* [Bluebird API](https://github.com/petkaantonov/bluebird/blob/master/API.md) (github.com)
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