Created
February 10, 2017 12:40
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extend Promise.all() in order to accept plain object
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| const assign = (obj, key, value) => Object.assign({}, obj, { [key]: value }); | |
| const promiseAllObject = obj => { | |
| const keys = Object.keys(obj); | |
| return Promise.all(Object.values(obj)) | |
| .then(results => results.map((val, i) => [keys[i], val])) | |
| .then(results => results.reduce((res, val) => assign(res, ...val), {})); | |
| } | |
| // Example: | |
| const delay = (cb, time) => new Promise((res) => setTimeout(() => res(cb()), time)); | |
| const promises = { | |
| foo: delay(() => 'foo', 1000), | |
| bar: delay(() => 'bar', 2000), | |
| }; | |
| promiseAllObject(promises).then(console.log) | |
| /* 2s after... | |
| { | |
| bar: "bar", | |
| foo: "foo" | |
| } | |
| */ |
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