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24 lines
1.4 KiB
24 lines
1.4 KiB
'use strict'; |
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const path = require('path'); |
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const {fileURLToPath} = require('url'); |
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const resolveCwd = require('resolve-cwd'); |
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const pkgDir = require('pkg-dir'); |
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module.exports = filename => { |
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const normalizedFilename = filename.startsWith('file://') ? fileURLToPath(filename) : filename; |
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const globalDir = pkgDir.sync(path.dirname(normalizedFilename)); |
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const relativePath = path.relative(globalDir, normalizedFilename); |
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const pkg = require(path.join(globalDir, 'package.json')); |
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const localFile = resolveCwd.silent(path.join(pkg.name, relativePath)); |
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const localNodeModules = path.join(process.cwd(), 'node_modules'); |
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const filenameInLocalNodeModules = !path.relative(localNodeModules, normalizedFilename).startsWith('..') && |
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// On Windows, if `localNodeModules` and `normalizedFilename` are on different partitions, `path.relative()` returns the value of `normalizedFilename`, resulting in `filenameInLocalNodeModules` incorrectly becoming `true`. |
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path.parse(localNodeModules).root === path.parse(normalizedFilename).root; |
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// Use `path.relative()` to detect local package installation, |
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// because __filename's case is inconsistent on Windows |
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// Can use `===` when targeting Node.js 8 |
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// See https://github.com/nodejs/node/issues/6624 |
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return !filenameInLocalNodeModules && localFile && path.relative(localFile, normalizedFilename) !== '' && require(localFile); |
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};
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