support until christmas

plugins/dates/scratch.js

@@ -14,7 +14,6 @@ const fmt = iso => (iso ? spacetime(iso).format('{day-short} {nice} {year}') : '
 // 'the month before christmas' vs 'a month before christmas'
 // middle september
 // end of september
-// first half of march
 // week of june 3rd
 // fridays in june
 // every saturday
@@ -48,6 +47,8 @@ txt = '1 to 5 weeks ago'
 txt = 'in 2-4 years from now'
 txt = 'in 1-2 weeks from now'
 txt = 'in 1 to 2 months'
+txt = `first half of march`
+txt = `until christmas`
 
 // nlp.verbose('tagger')
 let doc = nlp(txt).debug()

plugins/dates/src/api/parse/range/02-date-range.js

@@ -182,4 +182,24 @@ export default [
       }
     },
   },
+
+
+
+  {
+    // one month, no year - 'january 5 to 7'
+    match: '^until [<to>#Date+]',
+    desc: 'until christmas',
+    parse: (m, context) => {
+      let to = m.groups('to')
+      to = parseDate(to, context)
+      if (to) {
+        let start = new CalendarDate(context.today, null, context)
+        return {
+          start: start,
+          end: to.start(),
+        }
+      }
+      return null
+    },
+  },
 ]

plugins/dates/tests/equals.test.js

@@ -66,6 +66,8 @@ const arr = [
   [`tuesday at 1`, `tuesday at 1pm`],
   ['this fri, monday', 'fri jan 24 and mon jan 27'],
   ['next friday, this monday', 'fri jan 31 and mon jan 27'],
+  ['until christmas', '2020-01-21 to 2020-12-25'],
+  ['until feb 3 2024', '2020-01-21 to 2024-02-03'],
 ]
 
 test('date-variety', function (t) {