fix: do not use negative lookbehind for backward compatibility with node.js 8.6+

Author: mrmlnc

src/managers/patterns.ts

@@ -1,8 +1,9 @@
 /**
  * Matches a sequence of two or more consecutive slashes, excluding the first two slashes at the beginning of the string.
  * The latter is due to the presence of the device path at the beginning of the UNC path.
+ * @todo rewrite to negative lookbehind with the next major release.
  */
-const DOUBLE_SLASH_RE = /(?<!^)\/{2,}/g;
+const DOUBLE_SLASH_RE = /(?!^)\/{2,}/g;
 
 export function transform(patterns: string[]): string[] {
 	return patterns.map((pattern) => removeDuplicateSlashes(pattern));