only relativise symlinks with an absolute source

Author: sebmck

src/util/fs.js

@@ -153,7 +153,12 @@ export async function symlink(src: string, dest: string): Promise<void> {
       await fsSymlink(src, dest, "junction");
     } else {
       // use relative paths otherwise which will be retained if the directory is moved
-      await fsSymlink(path.relative(path.dirname(dest), src), dest);
+      let relative = src;
+      if (path.isAbsolute(relative)) {
+        relative = path.relative(path.dirname(dest), src);
+      }
+
+      await fsSymlink(relative, dest);
     }
   } catch (err) {
     if (err.code === "EEXIST") {