Merge pull request #53 from stoplightio/fix/2385-external-ref-resolution

add check to not convert actual urls

Author: mmarti21

lib/resolve-external.js

@@ -74,8 +74,11 @@ function crawl (obj, path, $refs, options, external, seen) {
  else {
  if (external && $Ref.is$Ref(obj)) {
  /* Correct the reference in the external document so we can resolve it */
- let withoutHash = url.stripHash(path);
- obj.$ref = url.toFileSystemPath(withoutHash) + obj.$ref;
+ const withoutHash = url.stripHash(path);
+ const externalRef = url.isHttp(withoutHash)
+ ? withoutHash
+ : url.toFileSystemPath(withoutHash);
+ obj.$ref = externalRef + obj.$ref;
  }
 
  for (let key of Object.keys(obj)) {