| 1 | import { Promise } from 'sander';
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| 2 |
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| 3 | export function sequence ( arr, callback ) {
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| 4 | const len = arr.length;
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| 5 | let results = new Array( len );
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| 6 |
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| 7 | let promise = Promise.resolve();
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| 8 |
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| 9 | function next ( i ) {
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| 10 | return promise
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| 11 | .then( () => callback( arr[i], i ) )
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| 12 | .then( result => results[i] = result );
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| 13 | }
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| 14 |
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| 15 | let i;
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| 16 |
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| 17 | for ( i = 0; i < len; i += 1 ) {
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| 18 | promise = next( i );
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| 19 | }
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| 20 |
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| 21 | return promise.then( () => results );
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| 22 | } |
| \ | No newline at end of file |