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