feat: remove reliance on CTI, add token type

.changeset/wise-phones-eat.md

@@ -0,0 +1,38 @@
+---
+'style-dictionary': major
+---
+
+Remove reliance on CTI token structure across transforms, actions and formats.
+
+Breaking changes:
+
+- Token type will now be determined by "type" (or "$type") property on the token, rather than by checking its CTI attributes.
+- Types are mostly aligned with [DTCG spec types](https://design-tokens.github.io/community-group/format/#types), although a few additional ones have been added for compatibility reasons:
+  - asset -> string type tokens where the value is a filepath to an asset
+  - icon -> content type string tokens where the content resembles an icon, e.g. for icon fonts like [Microsoft codicons](https://github.com/microsoft/vscode-codicons)
+  - html -> HTML entity strings for unicode characters
+
+Before:
+
+```json
+{
+  "color": {
+    "red": {
+      "value": "#FF0000"
+    }
+  }
+}
+```
+
+After:
+
+```json
+{
+  "color": { // <-- this no longer needs to be "color" in order for the tokens inside this group to be considered of type "color"
+    "red": {
+      "value": "#FF0000",
+      "type": "color"
+    }
+  }
+}
+```

README.md

@@ -299,7 +299,7 @@ StyleDictionary.registerTransform({
   name: 'time/seconds',
   type: 'value',
   matcher: function (token) {
-    return token.attributes.category === 'time';
+    return token.type === 'time';
   },
   transformer: function (token) {
     return (parseInt(token.original.value) / 1000).toString() + 's';