improve fn node

src/lib/flowUtils.ts

@@ -57,7 +57,11 @@ const DEFAULT_DATA: Record<string, any> = {
   config: { plantuml: '@startuml\n\n@enduml\n', title: '' },
   render: {},
   variable: { value: '', valueType: 'string' },
-  function: { body: '// args[0], args[1], ...\nreturn args[0];' },
+  function: {
+    body: `function(num, kwargs) {
+  return num + (kwargs.bar || 0);
+}`,
+  },
 }
 
 export function getDefaultDataForType(type: string, newId?: string): any {

src/lib/nunjucksAutocomplete.ts

@@ -61,7 +61,7 @@ export function nunjucksCompletionSource(
         }
         for (const id of functionIds ?? []) {
             if (!word || id.toLowerCase().startsWith(word.toLowerCase())) {
-                options.push({ label: id, type: 'function', info: 'Function (e.g. ' + id + '(var, 4))' })
+                options.push({ label: id, type: 'function', info: "Filter: {{ '' | " + id + " }}" })
             }
         }
         for (const kw of NUNJUCKS_KEYWORDS) {