:^)

src/inc/tpl.mjs

@@ -1,7 +1,10 @@
 export default new class {
   snippets = {};
-  syntax = [
-    [ "each", t => `util.forEach(${t.slice(4).trim()},(value,key)=>{` ], // own valuename {{each items ->|as|=> item}}
+  #syntax = [
+    [ "each", t => {
+      const tmp = t.slice(4).trim().split(" ");
+      return `util.forEach(${tmp[0]},(${(tmp[1] === "as" && tmp[2]) ? tmp[2] : "value"},key)=>{`;
+    } ],
     [ "/each", () => "});" ],
     [ "if", t => `if(${t.slice(2).trim()}){` ],
     [ "elseif", t => `}else if(${t.slice(6).trim()}){` ],
@@ -18,15 +21,14 @@ export default new class {
     else
       throw new Error(`${o} is not a iterable object`);
   }
-  render(tpl, data = {}) {
-    return new Function("util", "data", "let html = \"\";with(data){"
-      + tpl.trim().replace(/[\n\r]/g, "").split(/{{\s*([^}]+)\s*}}/).filter(Boolean).map(t => {
-        for(let i = 0; i < this.syntax.length; i++)
-          if(t.indexOf(this.syntax[i][0]) === 0)
-            return this.syntax[i][1](t);
-        return `html+='${t}';`;
-      })
-      .join`` + "}return html.trim().replace(/>[\\n\\r\\s]*?</g, '><')")
+  render(tpl, data = {}, f) {
+    return new Function("util", "data", "let html = \"\";with(data){" + tpl
+      .trim()
+      .replace(/[\n\r]/g, "")
+      .split(/{{\s*([^}]+)\s*}}/)
+      .filter(Boolean)
+      .map(t => !(f = this.#syntax.filter(s => t.startsWith(s[0]))[0]) ? `html+='${t}';` : f[1](t))
+      .join("") + "}return html.trim().replace(/>[\\n\\r\\s]*?</g, '><')")
       .bind(null, { forEach: this.forEach, snippets: this.snippets })(data);
   }
 };