fix: prop use resolution

Author: skaptox

package.json

@@ -1,6 +1,6 @@
 {
   "name": "@pathscale/rollup-plugin-vue3-ui-css-purge",
-  "version": "0.0.39",
+  "version": "0.0.40",
   "description": "Automatically remove unused CSS when using vue3-ui",
   "keywords": [
     "rollup",

src/analyzer.ts

@@ -95,9 +95,12 @@ export function analyze(
         }
       },
 
-      onattribute(prop, data) {
+      onattribute(p, data) {
         for (const cl of data.split(" ")) whitelist.add(cl);
 
+        const prop = p.replace(":", "") // remove : from props like :loading -> loading
+
+
         if (kebabCase(currentTag).startsWith("v-")) {
           // optional
           if (mappings[currentTag]?.optional.includes(`is-${prop}`)) {