1 | 'use strict';
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2 | const path = require('path');
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3 | const Module = require('module');
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4 | const fs = require('fs');
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5 |
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6 | const resolveFrom = (fromDir, moduleId, silent) => {
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7 | if (typeof fromDir !== 'string') {
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8 | throw new TypeError(`Expected \`fromDir\` to be of type \`string\`, got \`${typeof fromDir}\``);
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9 | }
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10 |
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11 | if (typeof moduleId !== 'string') {
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12 | throw new TypeError(`Expected \`moduleId\` to be of type \`string\`, got \`${typeof moduleId}\``);
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13 | }
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14 |
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15 | try {
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16 | fromDir = fs.realpathSync(fromDir);
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17 | } catch (err) {
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18 | if (err.code === 'ENOENT') {
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19 | fromDir = path.resolve(fromDir);
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20 | } else if (silent) {
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21 | return null;
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22 | } else {
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23 | throw err;
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24 | }
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25 | }
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26 |
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27 | const fromFile = path.join(fromDir, 'noop.js');
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28 |
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29 | const resolveFileName = () => Module._resolveFilename(moduleId, {
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30 | id: fromFile,
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31 | filename: fromFile,
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32 | paths: Module._nodeModulePaths(fromDir)
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33 | });
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34 |
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35 | if (silent) {
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36 | try {
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37 | return resolveFileName();
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38 | } catch (err) {
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39 | return null;
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40 | }
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41 | }
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42 |
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43 | return resolveFileName();
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44 | };
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45 |
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46 | module.exports = (fromDir, moduleId) => resolveFrom(fromDir, moduleId);
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47 | module.exports.silent = (fromDir, moduleId) => resolveFrom(fromDir, moduleId, true);
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