1 | var current = (process.versions && process.versions.node && process.versions.node.split('.')) || [];
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2 |
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3 | function specifierIncluded(specifier) {
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4 | var parts = specifier.split(' ');
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5 | var op = parts.length > 1 ? parts[0] : '=';
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6 | var versionParts = (parts.length > 1 ? parts[1] : parts[0]).split('.');
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7 |
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8 | for (var i = 0; i < 3; ++i) {
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9 | var cur = Number(current[i] || 0);
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10 | var ver = Number(versionParts[i] || 0);
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11 | if (cur === ver) {
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12 | continue;
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13 | }
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14 | if (op === '<') {
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15 | return cur < ver;
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16 | } else if (op === '>=') {
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17 | return cur >= ver;
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18 | } else {
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19 | return false;
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20 | }
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21 | }
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22 | return op === '>=';
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23 | }
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24 |
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25 | function matchesRange(range) {
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26 | var specifiers = range.split(/ ?&& ?/);
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27 | if (specifiers.length === 0) { return false; }
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28 | for (var i = 0; i < specifiers.length; ++i) {
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29 | if (!specifierIncluded(specifiers[i])) { return false; }
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30 | }
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31 | return true;
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32 | }
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33 |
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34 | function versionIncluded(specifierValue) {
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35 | if (typeof specifierValue === 'boolean') { return specifierValue; }
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36 | if (specifierValue && typeof specifierValue === 'object') {
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37 | for (var i = 0; i < specifierValue.length; ++i) {
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38 | if (matchesRange(specifierValue[i])) { return true; }
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39 | }
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40 | return false;
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41 | }
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42 | return matchesRange(specifierValue);
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43 | }
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44 |
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45 | var data = require('./core.json');
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46 |
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47 | var core = {};
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48 | for (var mod in data) {
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49 | if (Object.prototype.hasOwnProperty.call(data, mod)) {
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50 | core[mod] = versionIncluded(data[mod]);
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51 | }
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52 | }
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53 | module.exports = core;
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