Support empty {{ date }}

packages/string-templates/scripts/gen-collection-info.ts

@@ -33,7 +33,7 @@ const outputJSON: Manifest = {}
 const ADDED_HELPERS = {
   date: {
     date: {
-      args: ["datetime", "format", "[options]"],
+      args: ["[datetime]", "[format]", "[options]"],
       example: '{{date now "DD-MM-YYYY" "America/New_York" }} -> 21-01-2021',
       description:
         "Format a date using moment.js date formatting - the timezone is optional and uses the tz database.",

packages/string-templates/src/helpers/date.ts

@@ -71,7 +71,7 @@ function getContext(thisArg: any, locals: any, options: any) {
 function initialConfig(str: any, pattern: any, options?: any) {
   if (isOptions(pattern)) {
     options = pattern
-    pattern = null
+    pattern = DEFAULT_FORMAT
   }
 
   if (isOptions(str)) {
@@ -93,13 +93,15 @@ function setLocale(this: any, str: any, pattern: any, options?: any) {
   dayjs.locale(opts.lang || opts.language)
 }
 
+const DEFAULT_FORMAT = "MMMM DD, YYYY"
+
 export const date = (str: any, pattern: any, options: any) => {
   const config = initialConfig(str, pattern, options)
 
   // if no args are passed, return a formatted date
   if (config.str == null && config.pattern == null) {
     dayjs.locale("en")
-    return dayjs().format("MMMM DD, YYYY")
+    return dayjs().format(DEFAULT_FORMAT)
   }
 
   setLocale(config.str, config.pattern, config.options)

packages/string-templates/src/manifest.json

@@ -1208,8 +1208,8 @@
   "date": {
     "date": {
       "args": [
-        "datetime",
+        "[datetime]",
-        "format",
+        "[format]",
         "[options]"
       ],
       "example": "{{date now \"DD-MM-YYYY\" \"America/New_York\" }} -> 21-01-2021",