add all of the testing

src/plugins/compile-time-js.ts

@@ -8,16 +8,23 @@ export default class CompileTimeJS extends Plugin {
 
     async rewriteFile(file: string, filePath: string): Promise<string> {
         let input = file;
-        const regex = /{&(.+)&}/gms;
+        const regex = /\{\&([\s\S]*?)\&\}/gms;
 
         let m;
-
-        while ((m = regex.exec(file)) !== null) {
+        while ((m = regex.exec(input)) !== null) {
             if (m.index === regex.lastIndex) {
                 regex.lastIndex++;
             }
 
-            input = file.slice(0, m.index) + eval(m[1]) + file.slice(m.index + m[0].length);
+            const before = input.slice(0, m.index);
+            const expr = m[1];
+            const after = input.slice(m.index + m[0].length);
+
+            const result = eval(expr); // You can replace this with Function() for sandboxing
+            input = before + result + after;
+
+            // Reset regex lastIndex since we changed the string
+            regex.lastIndex = 0;
         }
 
         return input;