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4 |
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5 | "use strict";
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6 |
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7 | const concord = require("./concord");
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8 | const DescriptionFileUtils = require("./DescriptionFileUtils");
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9 | const getInnerRequest = require("./getInnerRequest");
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10 |
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11 | module.exports = class ConcordModulesPlugin {
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12 | constructor(source, options, target) {
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13 | this.source = source;
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14 | this.options = options;
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15 | this.target = target;
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16 | }
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17 |
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18 | apply(resolver) {
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19 | const target = resolver.ensureHook(this.target);
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20 | resolver.getHook(this.source).tapAsync("ConcordModulesPlugin", (request, resolveContext, callback) => {
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21 | const innerRequest = getInnerRequest(resolver, request);
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22 | if(!innerRequest) return callback();
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23 | const concordField = DescriptionFileUtils.getField(request.descriptionFileData, "concord");
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24 | if(!concordField) return callback();
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25 | const data = concord.matchModule(request.context, concordField, innerRequest);
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26 | if(data === innerRequest) return callback();
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27 | if(data === undefined) return callback();
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28 | if(data === false) {
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29 | const ignoreObj = Object.assign({}, request, {
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30 | path: false
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31 | });
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32 | return callback(null, ignoreObj);
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33 | }
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34 | const obj = Object.assign({}, request, {
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35 | path: request.descriptionFileRoot,
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36 | request: data
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37 | });
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38 | resolver.doResolve(target, obj, "aliased from description file " + request.descriptionFilePath + " with mapping '" + innerRequest + "' to '" + data + "'", resolveContext, (err, result) => {
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39 | if(err) return callback(err);
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40 |
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41 |
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42 | if(result === undefined) return callback(null, null);
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43 | callback(null, result);
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44 | });
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45 | });
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46 | }
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47 | };
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