Clean up build web example program

examples/build_web_example/build_web_example.odin

@@ -12,10 +12,9 @@
 // built using the `js_wasm32` target and put next to the index file.
 package karl2d_build_web_example
 
-import "core:os"
 import "core:fmt"
 import "core:path/filepath"
-import "core:os/os2"
+import os "core:os/os2"
 
 main :: proc() {
 	if len(os.args) != 2 {
@@ -28,46 +27,40 @@ main :: proc() {
 
 	dir := os.args[1]
 	dir_handle, dir_handle_err := os.open(dir)
-
 	fmt.ensuref(dir_handle_err == nil, "Failed finding directory %v. Error: %v", dir, dir_handle_err)
 
-	dir_stat, dir_stat_err := os.fstat(dir_handle)
-
+	dir_stat, dir_stat_err := os.fstat(dir_handle, context.allocator)
 	fmt.ensuref(dir_stat_err == nil, "Failed checking status of directory %v. Error: %v", dir, dir_stat_err)
-		
-	fmt.ensuref(dir_stat.is_dir, "%v is not a directory!", dir)
+	fmt.ensuref(dir_stat.type == .Directory, "%v is not a directory!", dir)
 
 	web_dir := filepath.join({dir, "web"})
 	os.make_directory(web_dir, 0o644)
 
 	web_build_dir := filepath.join({web_dir, "build"})
-
 	os.make_directory(web_build_dir, 0o644)
 
-	os.write_entire_file(
-		filepath.join(
-			{web_dir, fmt.tprintf("%v_web_entry.odin", filepath.stem(dir))},
-		),
-		WEB_ENTRY_TEMPLATE,
-	)
-	os.write_entire_file(filepath.join({web_build_dir, "index.html"}), WEB_ENTRY_INDEX)
+	entry_odin_file_path := filepath.join({web_dir, fmt.tprintf("%v_web_entry.odin", filepath.stem(dir))})
+	write_entry_odin_err := os.write_entire_file(entry_odin_file_path, WEB_ENTRY_TEMPLATE)
+	fmt.ensuref(write_entry_odin_err == nil, "Failed writing %v. Error: %v", entry_odin_file_path, write_entry_odin_err)
 
-	_, odin_root_stdout, _, odin_root_err := os2.process_exec({
+	entry_html_file_path := filepath.join({web_build_dir, "index.html"})
+	write_entry_html_err := os.write_entire_file(entry_html_file_path, WEB_ENTRY_INDEX)
+	fmt.ensuref(write_entry_html_err == nil, "Failed writing %v. Error: %v", entry_html_file_path, write_entry_html_err)
+
+	_, odin_root_stdout, _, odin_root_err := os.process_exec({
 		command = { "odin", "root" },
 	}, allocator = context.allocator)
 
 	ensure(odin_root_err == nil, "Failed fetching 'odin root' (Odin in PATH needed!)")
-
 	odin_root := string(odin_root_stdout)
 
 	js_runtime_path := filepath.join({odin_root, "core", "sys", "wasm", "js", "odin.js"})
-	fmt.ensuref(os2.exists(js_runtime_path), "File does not exist: %v -- It is the Odin Javascript runtime that this program needs to copy to the web build output folder!", js_runtime_path)
-
-	os2.copy_file(filepath.join({web_build_dir, "odin.js"}), js_runtime_path)
+	fmt.ensuref(os.exists(js_runtime_path), "File does not exist: %v -- It is the Odin Javascript runtime that this program needs to copy to the web build output folder!", js_runtime_path)
+	os.copy_file(filepath.join({web_build_dir, "odin.js"}), js_runtime_path)
 
 	wasm_out_path := filepath.join({web_build_dir, "main.wasm"})
 
-	_, build_std_out, build_std_err, _ := os2.process_exec({
+	_, build_std_out, build_std_err, _ := os.process_exec({
 		command = {
 			"odin",
 			"build",