Planning for v10

[ota-meshi]

This issue lists the changes we plan to release in eslint-plugin-vue v10.

💥 Breaking Changes

• Change vue/order-in-components rule to enforce ordering on slots and expose defaults #2153
• Add support for defineNuxtComponent()
• Drop support for Node.js v14, v16
• Drop support for ESLint v7(?) and use use ecmaVersion: 'latest' (Update JS env and remove or update parserOptions.ecmaVersion #1991).
• Change "Versioning Policy"?
  • Allow minor versions of this plugin to enhance the checks for new features in Vue and Nuxt.
  • Allow updating deprecated/reserved HTML+SVG element tag names in minor versions, see Add update-resources script #2171
• Change presets, or Deprecate shareable configs #1951
  • add no-required-prop-with-default rule to vue2 and vue3 presets #1986
  • Configs to set .vue extension via overrides #2036
  • use ecmaVersion: 'latest'
  • Make vue/block-order the recommended rule instead of vue/component-tags-order.
  • Add vue/no-deprecated-delete-set to vue3-essential config
  • Add vue/no-deprecated-model-definition to vue3-essential config
  • And more...
• Remove backwards compatible schema from vue/custom-event-name-casing, see https://github.com/vuejs/eslint-plugin-vue/blame/207eb981df3bbab5d63846d7456d0925ab82394c/lib/rules/custom-event-name-casing.js#L89-L93
• Make to use project: undefined when parsing script-fragments in <template>. vue-eslint-parser#195
• Remove deprecated rules: https://eslint.vuejs.org/rules/#deprecated

✨ Enhancements

• Change vue/order-in-components rule to enforce ordering on slots and expose defaults #2153
• Support for Nuxt v3
  • Add support for defineNuxtComponent()
    • (Related to vue/order-in-components is not working with defineNuxtComponent() #2057)
    • (Related to vue/no-unused-properties does not work with defineNuxtComponent() #2191)
  • Add support for auto imports, and "#imports"
    • (Related to Nuxt 3: auto imported ref will not trigger vue/no-ref-as-operand warning #1969)
• Support for "Flat Config" #1291