feat: hasTemplateSyntax

Author: pi0

README.md

@@ -61,6 +61,10 @@ Compile a template string into a render function code string.
 
 ### `createRenderContext(options)`
 
+### `hasTemplateSyntax(template)`
+
+Check if a template string contains template syntax.
+
 ### `renderToResponse(htmlTemplate, opts)`
 
 Renders an HTML template to a Response object.

src/compiler.ts

@@ -99,6 +99,15 @@ export function compileTemplateToString(
   return asyncWrapper === false ? body : `(async (data) => {${body}})`;
 }
 
+/**
+ * Check if a template string contains template syntax.
+ */
+export function hasTemplateSyntax(template: string): boolean {
+  return /(?:<script\s+server\s*>[\s\S]*?<\/script>)|(?:<\?(?:js)?=?[\s\S]*?\?>)/i.test(
+    template,
+  );
+}
+
 // --- Tokenizer ---
 
 export type Token = {

src/index.ts

@@ -1,6 +1,7 @@
 export {
   compileTemplate,
   compileTemplateToString,
+  hasTemplateSyntax,
   type CompiledTemplate,
   type CompileTemplateOptions,
 } from "./compiler.ts";