fix: crash of the app when we mix flat json keys

packages/vue-i18n-core/src/utils.ts

@@ -4,10 +4,12 @@ import {
  isObject,
  hasOwn,
  isPlainObject,
- isString
+ isString,
+ warn
 } from '@intlify/shared'
 import { Text, createVNode } from 'vue'
 import { I18nErrorCodes, createI18nError } from './errors'
+import { I18nWarnCodes, getWarnMessage } from './warnings'
 
 import type { Locale, MessageResolver } from '@intlify/core-base'
 import type {
@@ -72,15 +74,28 @@ export function handleFlatJson(obj: unknown): unknown {
  const subKeys = key.split('.')
  const lastIndex = subKeys.length - 1
  let currentObj = obj
+ let hasStringValue = false
  for (let i = 0; i < lastIndex; i++) {
  if (!(subKeys[i] in currentObj)) {
  currentObj[subKeys[i]] = {}
  }
+ if (!isObject(currentObj[subKeys[i]])) {
+ __DEV__ &&
+ warn(
+ getWarnMessage(I18nWarnCodes.IGNORE_OBJ_FLATTEN, {
+ key: subKeys[i]
+ })
+ )
+ hasStringValue = true
+ break
+ }
  currentObj = currentObj[subKeys[i]]
  }
  // update last object value, delete old property
- currentObj[subKeys[lastIndex]] = obj[key]
- delete obj[key]
+ if (!hasStringValue) {
+ currentObj[subKeys[lastIndex]] = obj[key]
+ delete obj[key]
+ }
  // recursive process value if value is also a object
  if (isObject(currentObj[subKeys[lastIndex]])) {
  handleFlatJson(currentObj[subKeys[lastIndex]])

packages/vue-i18n-core/src/warnings.ts

@@ -11,7 +11,8 @@ export const I18nWarnCodes = {
  NOT_SUPPORTED_PRESERVE_DIRECTIVE: inc(), // 10
  NOT_SUPPORTED_GET_CHOICE_INDEX: inc(), // 11
  COMPONENT_NAME_LEGACY_COMPATIBLE: inc(), // 12
- NOT_FOUND_PARENT_SCOPE: inc() // 13
+ NOT_FOUND_PARENT_SCOPE: inc(), // 13
+ IGNORE_OBJ_FLATTEN: inc() // 14
 } as const
 
 type I18nWarnCodes = (typeof I18nWarnCodes)[keyof typeof I18nWarnCodes]
@@ -23,7 +24,8 @@ export const warnMessages: { [code: number]: string } = {
  [I18nWarnCodes.NOT_SUPPORTED_PRESERVE_DIRECTIVE]: `Not supported 'preserveDirectiveContent'.`,
  [I18nWarnCodes.NOT_SUPPORTED_GET_CHOICE_INDEX]: `Not supported 'getChoiceIndex'.`,
  [I18nWarnCodes.COMPONENT_NAME_LEGACY_COMPATIBLE]: `Component name legacy compatible: '{name}' -> 'i18n'`,
- [I18nWarnCodes.NOT_FOUND_PARENT_SCOPE]: `Not found parent scope. use the global scope.`
+ [I18nWarnCodes.NOT_FOUND_PARENT_SCOPE]: `Not found parent scope. use the global scope.`,
+ [I18nWarnCodes.IGNORE_OBJ_FLATTEN]: `Ignore object flatten: '{key}' key has an string value`
 }
 
 export function getWarnMessage(

packages/vue-i18n-core/test/__snapshots__/issues.test.ts.snap

@@ -8,4 +8,6 @@ exports[`issue #1054, #1053 1`] = `"<p>+$123,456.79</p><span>+$123,456.79</span>
 
 exports[`issue #1055 1`] = `"<p>John opened issue 123</p>"`;
 
-exports[`issue #1373 1`] = `"<p class=\\"name\\">hello, <span>kazupon</span>!</p><p>6/2/2023</p><p>$100.00</p>"`;
+exports[`issue #1365 1`] = `"<p>Animal</p>"`;
+
+exports[`issue #1373 1`] = `"<p class=\\"name\\">hello, <span>kazupon</span>!</p><p>6/5/2023</p><p>$100.00</p>"`;

packages/vue-i18n-core/test/issues.test.ts

@@ -872,6 +872,29 @@ test('issue #1123', async () => {
  )
 })
 
+test('issue #1365', async () => {
+ const i18n = createI18n({
+ legacy: false,
+ locale: 'en',
+ flatJson: true,
+ messages: {
+ en: {
+ 'animal.dog': 'Dog',
+ animal: 'Animal'
+ }
+ }
+ })
+ const App = defineComponent({
+ template: `
+ <p>{{ $t('animal') }}</p>
+ `
+ })
+
+ const wrapper = await mount(App, i18n)
+
+ expect(wrapper.html()).toMatchSnapshot()
+})
+
 test('issue #1373', async () => {
  const i18n = createI18n({
  locale: 'en-US',
@@ -887,7 +910,7 @@ test('issue #1373', async () => {
  <span>kazupon</span>
  </template>
 </I18nT>
-<I18nD tag="p" :value="new Date()"></I18nD>
+<I18nD tag="p" :value="new Date(1685951676578)"></I18nD>
 <I18nN tag="p" :value="100" format="currency"></I18nN>
 `
  })

packages/vue-i18n-core/test/utils.test.ts

@@ -1,13 +1,35 @@
+// utils
+import * as shared from '@intlify/shared'
+vi.mock('@intlify/shared', async () => {
+ const actual = await vi.importActual<object>('@intlify/shared')
+ return {
+ ...actual,
+ warn: vi.fn()
+ }
+})
 import { handleFlatJson } from '../src/utils'
+import { I18nWarnCodes, getWarnMessage } from '../src/warnings'
 
 test('handleFlatJson', () => {
+ const mockWarn = vi.spyOn(shared, 'warn')
+ // eslint-disable-next-line @typescript-eslint/no-empty-function
+ mockWarn.mockImplementation(() => {})
+
  const obj = {
  a: { a1: 'a1.value' },
  'a.a2': 'a.a2.value',
  'b.x': {
  'b1.x': 'b1.x.value',
  'b2.x': ['b2.x.value0', 'b2.x.value1'],
  'b3.x': { 'b3.x': 'b3.x.value' }
+ },
+ c: {
+ 'animal.dog': 'Dog',
+ animal: 'Animal'
+ },
+ d: {
+ 'animal.dog': 'Dog',
+ animal: {}
  }
  }
  const expectObj = {
@@ -21,7 +43,23 @@ test('handleFlatJson', () => {
  b2: { x: ['b2.x.value0', 'b2.x.value1'] },
  b3: { x: { b3: { x: 'b3.x.value' } } }
  }
+ },
+ c: {
+ 'animal.dog': 'Dog',
+ animal: 'Animal'
+ },
+ d: {
+ animal: {
+ dog: 'Dog'
+ }
  }
  }
+
  expect(handleFlatJson(obj)).toEqual(expectObj)
+ expect(mockWarn).toHaveBeenCalled()
+ expect(mockWarn.mock.calls[0][0]).toEqual(
+ getWarnMessage(I18nWarnCodes.IGNORE_OBJ_FLATTEN, {
+ key: 'animal'
+ })
+ )
 })