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node_modules/@npmcli/fs/lib/fs.js

@@ -0,0 +1,14 @@
+const fs = require('fs')
+const promisify = require('@gar/promisify')
+
+const isLower = (s) => s === s.toLowerCase() && s !== s.toUpperCase()
+
+const fsSync = Object.fromEntries(Object.entries(fs).filter(([k, v]) =>
+  typeof v === 'function' && (k.endsWith('Sync') || !isLower(k[0]))
+))
+
+// this module returns the core fs async fns wrapped in a proxy that promisifies
+// method calls within the getter. we keep it in a separate module so that the
+// overridden methods have a consistent way to get to promisified fs methods
+// without creating a circular dependency. the ctors and sync methods are kept untouched
+module.exports = { ...promisify(fs), ...fsSync }