From 46de19e1182891ceba1985b32b4ab9f557783bdf Mon Sep 17 00:00:00 2001
From: kazuya kawaguchi <kawakazu80@gmail.com>
Date: Fri, 9 Aug 2019 19:25:38 +0900
Subject: [PATCH] :star: new: datetime/number formats fallback warning filter

closes #558
---
 src/index.js             | 16 +++++++--------
 test/unit/silent.test.js | 42 ++++++++++++++++++++++++++++++++++++++++
 2 files changed, 50 insertions(+), 8 deletions(-)

diff --git a/src/index.js b/src/index.js
index 7c5b247c2..12abb2d40 100644
--- a/src/index.js
+++ b/src/index.js
@@ -621,8 +621,8 @@ export default class VueI18n {
 
     // fallback locale
     if (isNull(formats) || isNull(formats[key])) {
-      if (process.env.NODE_ENV !== 'production' && !this._isSilentTranslationWarn(key)) {
-        warn(`Fall back to '${fallback}' datetime formats from '${locale} datetime formats.`)
+      if (process.env.NODE_ENV !== 'production' && !this._isSilentTranslationWarn(key) && !this._isSilentFallbackWarn(key)) {
+        warn(`Fall back to '${fallback}' datetime formats from '${locale}' datetime formats.`)
       }
       _locale = fallback
       formats = dateTimeFormats[_locale]
@@ -655,8 +655,8 @@ export default class VueI18n {
     const ret: ?DateTimeFormatResult =
       this._localizeDateTime(value, locale, this.fallbackLocale, this._getDateTimeFormats(), key)
     if (this._isFallbackRoot(ret)) {
-      if (process.env.NODE_ENV !== 'production' && !this._isSilentTranslationWarn(key)) {
-        warn(`Fall back to datetime localization of root: key '${key}' .`)
+      if (process.env.NODE_ENV !== 'production' && !this._isSilentTranslationWarn(key) && !this._isSilentFallbackWarn(key)) {
+        warn(`Fall back to datetime localization of root: key '${key}'.`)
       }
       /* istanbul ignore if */
       if (!this._root) { throw Error('unexpected error') }
@@ -718,8 +718,8 @@ export default class VueI18n {
 
     // fallback locale
     if (isNull(formats) || isNull(formats[key])) {
-      if (process.env.NODE_ENV !== 'production' && !this._isSilentTranslationWarn(key)) {
-        warn(`Fall back to '${fallback}' number formats from '${locale} number formats.`)
+      if (process.env.NODE_ENV !== 'production' && !this._isSilentTranslationWarn(key) && !this._isSilentFallbackWarn(key)) {
+        warn(`Fall back to '${fallback}' number formats from '${locale}' number formats.`)
       }
       _locale = fallback
       formats = numberFormats[_locale]
@@ -762,8 +762,8 @@ export default class VueI18n {
     const formatter: ?Object = this._getNumberFormatter(value, locale, this.fallbackLocale, this._getNumberFormats(), key, options)
     const ret: ?NumberFormatResult = formatter && formatter.format(value)
     if (this._isFallbackRoot(ret)) {
-      if (process.env.NODE_ENV !== 'production' && !this._isSilentTranslationWarn(key)) {
-        warn(`Fall back to number localization of root: key '${key}' .`)
+      if (process.env.NODE_ENV !== 'production' && !this._isSilentTranslationWarn(key) && !this._isSilentFallbackWarn(key)) {
+        warn(`Fall back to number localization of root: key '${key}'.`)
       }
       /* istanbul ignore if */
       if (!this._root) { throw Error('unexpected error') }
diff --git a/test/unit/silent.test.js b/test/unit/silent.test.js
index bf2f281a8..8f1bbb639 100644
--- a/test/unit/silent.test.js
+++ b/test/unit/silent.test.js
@@ -1,3 +1,6 @@
+import dateTimeFormats from './fixture/datetime'
+import numberFormats from './fixture/number'
+
 describe('silent', () => {
   let spy
   beforeEach(() => {
@@ -222,5 +225,44 @@ describe('silent', () => {
         assert(spy.getCalls().some(call => call.args[0].match(warningRegex)) === false)
       })
     })
+
+    describe('datetime/number format', () => {
+      it('should be suppressed translate warnings', () => {
+        const el = document.createElement('div')
+        const root = new Vue({
+          i18n: new VueI18n({
+            locale: 'en-US',
+            fallbackLocale: 'ja-JP',
+            silentFallbackWarn: true,
+            dateTimeFormats,
+            numberFormats
+          }),
+          components: {
+            subComponent: {
+              i18n: {
+                dateTimeFormats: {},
+                numberFormats: {}
+              },
+              render (h) { return h('p') }
+            }
+          },
+          render (h) { return h('sub-component') }
+        }).$mount(el)
+        const vm = root.$children[0]
+        const warningDateTimeRegex = /Fall back to .* datetime formats\./
+        const warningNumberRegex = /Fall back to .* number formats\./
+        vm.$d(Date.now(), 'long')
+        vm.$n(10, 'numeric')
+        assert(spy.getCalls().some(call => call.args[0].match(warningDateTimeRegex)) === false)
+        assert(spy.getCalls().some(call => call.args[0].match(warningNumberRegex)) === false)
+
+        // change
+        vm.$i18n.silentFallbackWarn = false
+        vm.$d(Date.now(), 'long')
+        vm.$n(10, 'numeric')
+        assert(spy.getCalls().some(call => call.args[0].match(warningDateTimeRegex)) === true)
+        assert(spy.getCalls().some(call => call.args[0].match(warningNumberRegex)) === true)
+      })
+    })
   })
 })