feat(plugins/dates): add basic duration range skeleton

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

@@ -1,5 +1,6 @@
 import parseDate from '../one/index.js'
 import reverseMaybe from './_reverse.js'
+import Unit from '../one/units/Unit.js'
 
 export default [
   {
@@ -138,4 +139,25 @@ export default [
       return null
     },
   },
+
+  {
+    // 2 to 4 weeks
+    match: '[<min>#Value] to [<max>#Value] [<unit>#Duration]',
+    desc: '2 to 4 weeks',
+    parse: (m, context) => {
+      const { min, max, unit } = m.groups()
+
+      let start = new Unit(context.today, null, context)
+      let end = start.clone()
+
+      const duration = unit.text('implicit')
+      start = start.applyShift({ [duration]: min.numbers().get()[0] })
+      end = end.applyShift({ [duration]: max.numbers().get()[0] })
+
+      return {
+        start: start,
+        end: end.end(),
+      }
+    },
+  },
 ]