1 | 'use strict';
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2 |
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3 | var Promise = require('bluebird');
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4 |
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5 | var generateId = require('./generate-id');
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6 |
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7 | var ID_LENGTH = 8;
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8 | var ID_PREFIX = '__aSyNcId_<_';
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9 | var ID_SUFFIX = '__';
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10 |
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11 | function resolve(cache, fn, context) {
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12 | var id = ID_PREFIX + generateId(ID_LENGTH) + ID_SUFFIX;
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13 | cache[id] = new Promise(function(passed, failed) {
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14 | try {
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15 | fn(context, function(res) {
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16 | passed(res);
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17 | });
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18 | } catch (error) {
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19 | failed(error);
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20 | }
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21 | });
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22 | return id;
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23 | }
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24 |
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25 | function done(cache, callback) {
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26 | Promise.props(cache).then(function(values) {
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27 | callback(null, values);
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28 | }).catch(function(error) {
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29 | callback(error);
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30 | });
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31 | }
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32 |
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33 | function hasResolvers(text) {
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34 | if (text.search(ID_PREFIX) > 0) {
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35 | return true;
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36 | }
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37 | return false;
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38 | }
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39 |
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40 | module.exports = {
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41 | done: done,
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42 | hasResolvers: hasResolvers,
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43 | resolve: resolve
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44 | };
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