feat(tags): new template tag date.fromJournal

docs/reference__tags.md

@@ -444,7 +444,6 @@ Same as [`date.today`](#date-today), but for tomorrow date.
 
 
 
-
 ### `.from` :id=date-from
 [Day.js](https://day.js.org) object builder. See whole documentation section [here](https://day.js.org/docs/en/parse/parse) for details.
 
@@ -466,6 +465,18 @@ Europe/Minsk, GMT+3 \
 
 
 
+### `.fromJournal` :id=date-from-journal
+Conversion from Logseq internal date format (e.g. `20240820`) to [Day.js](https://day.js.org) object.
+
+<!-- tabs:start -->
+#### ***Template***
+` ``date.fromJournal(20240820).toISOString()`` `
+
+#### ***Rendered***
+2024-08-20T21:00:00.000Z
+<!-- tabs:end -->
+
+
 ### `.nlp` :id=date-nlp
 Getting dates via natural language processing.
 

src/tags.ts

@@ -384,6 +384,15 @@ function date_nlp(context: ILogseqContext, query: string, now: Dayjs | string =
     }
     return null
 }
+function date_from_journal(day: number | string | Dayjs): Dayjs | null {
+    if (day instanceof dayjs)
+        return day
+    day = day.toString()
+    const obj = PageContext.parseDay(day)
+    if (!obj.isValid())
+        return null
+    return obj
+}
 
 
 /* query */
@@ -748,6 +757,7 @@ export function getTemplateTagsContext(context: ILogseqContext) {
         }),
         date: Object.assign(datesContext.date, {
             nlp: bindContext(date_nlp, context),
+            fromJournal: date_from_journal,
         }),
     })
 }