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1
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'use strict';
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2
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const path = require('path');
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3
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const resolveCwd = require('resolve-cwd');
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4
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const pkgDir = require('pkg-dir');
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5
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6
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module.exports = filename => {
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7
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const globalDir = pkgDir.sync(path.dirname(filename));
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8
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const relativePath = path.relative(globalDir, filename);
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9
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const pkg = require(path.join(globalDir, 'package.json'));
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10
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const localFile = resolveCwd.silent(path.join(pkg.name, relativePath));
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11
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12
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// Use `path.relative()` to detect local package installation,
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13
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// because __filename's case is inconsistent on Windows
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14
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// Can use `===` when targeting Node.js 8
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15
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// See https://github.com/nodejs/node/issues/6624
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16
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return localFile && path.relative(localFile, filename) !== '' ? require(localFile) : null;
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17
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};
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