| 1 | const fs = require('fs')
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| 2 | const path = require('path')
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| 3 |
|
| 4 | const cache = {}
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| 5 |
|
| 6 | module.exports = function(packageName) {
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| 7 | if (packageName in cache) {
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| 8 | return cache[packageName]
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| 9 | }
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| 10 |
|
| 11 | try {
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| 12 | fs.statSync(path.resolve('node_modules', packageName))
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| 13 | cache[packageName] = true
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| 14 | return true
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| 15 | } catch (error) {
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| 16 | cache[packageName] = false
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| 17 | return false
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| 18 | }
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| 19 | }
|