no-message-keys warns when using <i18n> components and <i18n> blocks.

[mandragorn]

I'm using version v0.7.0 of eslint-plugin-vue-i18n (which includes PR #80) and I'm getting an error that the message keys are not used when they are present for the path prop of an <i18n> component.

Simplified Test.vue:

<template>
  <i18n path="message_key" tag="p" />
</template>

<i18n>
{
  "en": {
    "message_key": "hi"
  }
}
</i18n>

.eslintrc.js:

module.exports = {
  root: true,
  env: {
    node: true
  },
  extends: [
    'plugin:vue/essential',
    'eslint:recommended',
    '@vue/prettier',
    'plugin:@intlify/vue-i18n/recommended'
  ],
  parserOptions: {
    parser: 'babel-eslint'
  },
  rules: {
    'no-console': process.env.NODE_ENV === 'production' ? 'warn' : 'off',
    'no-debugger': process.env.NODE_ENV === 'production' ? 'warn' : 'off',
    'prettier/prettier': [
      'warn',
      {
        singleQuote: true,
        trailingCommas: 'none',
        vueIndentScriptAndStyle: true
      }
    ],
    '@intlify/vue-i18n/no-html-messages': 'error',
    '@intlify/vue-i18n/no-missing-keys': 'error',
    '@intlify/vue-i18n/no-raw-text': 'error',
    '@intlify/vue-i18n/no-v-html': 'error',
    '@intlify/vue-i18n/no-dynamic-keys': 'error',
    '@intlify/vue-i18n/no-unused-keys': 'error'
  },
  overrides: [
    {
      files: [
        '**/__tests__/*.{j,t}s?(x)',
        '**/tests/unit/**/*.spec.{j,t}s?(x)'
      ],
      env: {
        jest: true
      }
    }
  ],
  settings: {
    'vue-i18n': {
      localeDir: {
        pattern: './*.vue',
        localeKey: 'key'
      }
    }
  }
};

Error when running lint:

error: unused 'en.message_key' key (@intlify/vue-i18n/no-unused-keys) at src/components/Test.vue:8:5:
   6 | {
   7 |   "en": {
>  8 |     "message_key": "hi"
     |     ^
   9 |   }
  10 | }
  11 | </i18n>

Dependencies:

  "dependencies": {
    "axios": "^0.18.0",
    "core-js": "^3.6.5",
    "moment": "^2.27.0",
    "v-mask": "^2.2.3",
    "vue": "^2.6.11",
    "vue-i18n": "^8.20.0",
    "vue-router": "^3.2.0",
    "vuejs-logger": "^1.5.3",
    "vuelidate": "^0.7.5",
    "vuex": "^3.4.0"
  },
  "devDependencies": {
    "@intlify/eslint-plugin-vue-i18n": "^0.7.0",
    "@intlify/vue-i18n-loader": "^1.0.0",
    "@kazupon/vue-i18n-loader": "^0.5.0",
    "@vue/cli-plugin-babel": "~4.4.0",
    "@vue/cli-plugin-e2e-cypress": "~4.4.0",
    "@vue/cli-plugin-eslint": "~4.4.0",
    "@vue/cli-plugin-pwa": "^4.4.6",
    "@vue/cli-plugin-router": "~4.4.0",
    "@vue/cli-plugin-unit-jest": "~4.4.0",
    "@vue/cli-plugin-vuex": "~4.4.0",
    "@vue/cli-service": "~4.4.0",
    "@vue/eslint-config-prettier": "^6.0.0",
    "@vue/test-utils": "^1.0.3",
    "babel-eslint": "^10.1.0",
    "eslint": "^6.8.0",
    "eslint-plugin-prettier": "^3.1.3",
    "eslint-plugin-vue": "^6.2.2",
    "lint-staged": "^9.5.0",
    "node-sass": "^4.12.0",
    "npm-force-resolutions": "0.0.3",
    "prettier": "^1.19.1",
    "register-service-worker": "^1.7.1",
    "sass-loader": "^8.0.2",
    "vue-cli-plugin-i18n": "~1.0.1",
    "vue-template-compiler": "^2.6.11",
    "workbox-webpack-plugin": "^5.1.3"
  },

Originally posted by @mandragorn in #70 (comment)

[ota-meshi]

Thank you for this issue!
It seems a bug.

[mandragorn]

Thank you for the quick fix!

Is there a sense of what the release cadence is for this project? That way I have an idea of when to check back for a release that includes this fix.

Thanks again! ~Josh