Add default format for dateFormat

Author: IvanGoncharov

src/fake.ts

@@ -22,13 +22,6 @@ function toBase64(str) {
   return Buffer.from(str).toString('base64');
 }
 
-function formatDate(date, dateFormat) {
-  if (dateFormat == null) {
-    return date;
-  }
-  return moment(date).format(dateFormat);
-}
-
 const fakeFunctions = {
   // Address section
   zipCode: () => faker.address.zipCode(),
@@ -86,19 +79,19 @@ const fakeFunctions = {
   date: {
     args: ['dateFormat', 'dateFrom', 'dateTo'],
     func: (dateFormat, dateFrom, dateTo) =>
-      formatDate(faker.date.between(dateFrom, dateTo), dateFormat),
+      moment(faker.date.between(dateFrom, dateTo)).format(dateFormat).toString(),
   },
   pastDate: {
     args: ['dateFormat'],
-    func: (dateFormat) => formatDate(faker.date.past(), dateFormat),
+    func: (dateFormat) => moment(faker.date.past()).format(dateFormat),
   },
   futureDate: {
     args: ['dateFormat'],
-    func: (dateFormat) => formatDate(faker.date.future(), dateFormat),
+    func: (dateFormat) => moment(faker.date.future()).format(dateFormat),
   },
   recentDate: {
     args: ['dateFormat'],
-    func: (dateFormat) => formatDate(faker.date.recent(), dateFormat),
+    func: (dateFormat) => moment(faker.date.recent()).format(dateFormat),
   },
 
   // Finance section

src/fake_definition.ts

@@ -195,7 +195,7 @@ const fakeDefinitionAST = parse(/* GraphQL */ `
     "Only for type \`lorem\`"
     loremSize: fake__loremSize
     "Only for types \`*Date\`. Example value: \`YYYY MM DD\`. [Full Specification](http://momentjs.com/docs/#/displaying/format/)"
-    dateFormat: String
+    dateFormat: String = "YYYY-MM-DDTHH:mm:ss[Z]"
     "Only for types \`betweenDate\`. Example value: \`1986-11-02\`."
     dateFrom: String = "2010-01-01"
     "Only for types \`betweenDate\`. Example value: \`2038-01-19\`."