Merge pull request #99 from hildjj/trim-date

Trim fractional seconds from tag 0 if not needed, so that the output matches the example in RFC8949.

Author: hildjj

src/types.ts

@@ -138,7 +138,8 @@ registerEncoder(Date,
       case TAG.DATE_EPOCH:
         return [opts.dateTag, obj.valueOf() / 1000];
       case TAG.DATE_STRING:
-        return [opts.dateTag, obj.toISOString()];
+        // Remove fractional seconds if not needed, to match example in 8949
+        return [opts.dateTag, obj.toISOString().replace(/\.000Z$/, 'Z')];
       case TAG.DATE_EPOCH_DAYS:
         return [opts.dateTag, Math.floor(obj.valueOf() / DAY_MS)];
       case TAG.DATE_FULL:

test/encoder.test.js

@@ -362,7 +362,7 @@ test('ignoreGlobalTags', () => {
 
 test('dateTag', () => {
   testAll([
-    [new Date(1363896240000), '', '0xc07818323031332d30332d32315432303a30343a30302e3030305a'],
+    [new Date(1363896240000), '', 'c074323031332d30332d32315432303a30343a30305a'],
   ], {dateTag: TAG.DATE_STRING});
 
   testAll([