Make paths in resulting sourcemap absolute

src/index.ts

@@ -1,4 +1,5 @@
 import fs from 'fs'
+import { resolve } from 'path'
 import { spawn } from 'child_process'
 
 // These are where I (yname) have my Rojo projects.
@@ -43,23 +44,23 @@ function getSourcemap(root: string): Promise<RojoSourcemap> {
   })
 }
 
-function prefixSourcemap(
+function absoluteSourcemap(
   sourcemap: RojoSourcemap,
   prefix: string,
 ): RojoSourcemap {
   return {
     name: sourcemap.name,
     className: sourcemap.className,
-    filePaths: sourcemap.filePaths?.map((path) => `${prefix}/${path}`),
+    filePaths: sourcemap.filePaths?.map((path) => resolve(`${prefix}/${path}`)),
     children: sourcemap.children?.map((child) =>
-      prefixSourcemap(child, prefix),
+      absoluteSourcemap(child, prefix),
     ),
   }
 }
 
 async function getPrefixedSourcemap(root: string): Promise<RojoSourcemap> {
   const sourcemap = await getSourcemap(root)
-  const prefixed = prefixSourcemap(sourcemap, root)
+  const prefixed = absoluteSourcemap(sourcemap, root)
   return prefixed
 }