added shell.nix + minor changes

.env

@@ -0,0 +1,2 @@
+which bun || nix-shell
+which npm || nix-shell

README.md

@@ -15,5 +15,6 @@ import {...} from 'xrf/level0'
 
 | function               | example                                                                 |
 |------------------------|-------------------------------------------------------------------------|
-| fetchSideCarFiles(...) | fetchSideCarFiles("https://f.org/a.glb") // ["https://f.org/a.png",...] |
+| sideCarFiles(...)      | sideCarFiles("https://f.org/a.glb") `// ["https://f.org/a.png",...]`    |
+| fetchSideCarFiles(...) | await fetchSideCarFiles("https://f.org/a.glb") `// [{code:200},...]`    |
  

level0.js

@@ -3,7 +3,8 @@
  *
  * | function               | example                                                                 |
  * |------------------------|-------------------------------------------------------------------------|
- * | fetchSideCarFiles(...) | fetchSideCarFiles("https://f.org/a.glb") // ["https://f.org/a.png",...] |
+ * | sideCarFiles(...)      | sideCarFiles("https://f.org/a.glb") `// ["https://f.org/a.png",...]`    |
+ * | fetchSideCarFiles(...) | await fetchSideCarFiles("https://f.org/a.glb") `// [{code:200},...]`    |
  *  
  */ 
 import * as http from './scheme/http.js'
@@ -31,7 +32,7 @@ async function fetchSideCarFiles(urlString, opts){
       fetch( urlString.replace(ext, sext[i] ), { method:'HEAD'} )
     })
   )
-  await Promise.all(p)
+  await Promise.allSettled(p)
 }
 
 export {pollSideCarFiles}

package.json

@@ -0,0 +1,11 @@
+{
+  "name": "xrf",
+  "version": "0.0.1",
+  "description": "XR Fragment utilities",
+  "main": "level0.js",
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "author": "",
+  "license": "MIT"
+}

shell.nix

@@ -0,0 +1,23 @@
+#let 
+#  pkgs = import (builtins.fetchGit {
+#      name = "nixos-23.05";
+#    url = "https://github.com/nixos/nixpkgs/";
+#    ref = "refs/heads/nixos-unstable";
+#    rev = "ef99fa5c5ed624460217c31ac4271cfb5cb2502c";
+#  }) {};
+{ pkgs ? import <nixpkgs> {} }:
+
+  pkgs.mkShell {
+    # nativeBuildInputs is usually what you want -- tools you need to run
+    nativeBuildInputs = with pkgs.buildPackages; [ 
+
+      nodejs_20
+      bun
+
+    ];
+
+    shellHook = ''
+      
+      export NIX_XRF=1
+    '';
+}