working demo of what the metdata exporter is supposed to do

src/aseprite_odin_generator/aseprite_odin_generator.odin

@@ -1,14 +1,17 @@
 package generator
 
 import ase "../aseprite"
+import "core:encoding/json"
 import "core:fmt"
 import "core:mem"
 import "core:os"
 import fp "core:path/filepath"
 import "core:slice"
-import "core:strings"
+import s "core:strings"
 import "core:testing"
+
 import rl "vendor:raylib"
+import stbrp "vendor:stb/rect_pack"
 
 import gen ".."
 
@@ -24,14 +27,17 @@ main :: proc() {
 	}
 
 	cwd := os.get_current_directory()
-	target_dir := strings.concatenate({cwd, "\\src\\aseprite_odin_generator\\"})
+	target_dir := s.concatenate({cwd, "\\src\\aseprite_odin_generator\\"})
 
 	atlas: rl.Image = rl.GenImageColor(ATLAS_SIZE, ATLAS_SIZE, rl.BLANK)
 	atlas_entries: [dynamic]gen.AtlasEntry
 	gen.unmarshall_aseprite_dir(target_dir, &atlas_entries)
 
+	metadata := gen.pack_atlas_entries(atlas_entries[:], &atlas, 10, 10)
+
+	json_bytes, jerr := json.marshal(metadata)
+        os.write_entire_file("src/aseprite_odin_generator/metadata.json", json_bytes)
 
-	gen.pack_atlas_entries(atlas_entries[:], &atlas, 10, 10)
 
 	rl.ExportImage(atlas, EXPORT_PATH)
 }