eslint 5 compatibility

[zevdg]

Tell us about your environment

• ESLint Version: 5.1.0
• eslint-plugin-vue Version: 4.5.0
• Node Version: 8.11.3

Please show your full configuration:
N/A

What did you do? Please include the actual source code causing the issue.
yarn add -D eslint@latest eslint-plugin-vue@latest

What did you expect to happen?
installation without errors

What actually happened? Please include the actual, raw output from ESLint.

warning " > eslint-plugin-vue@4.5.0" has incorrect peer dependency "eslint@^3.18.0 || ^4.0.0".

I'd also expect to be seeing a message like

DeprecationWarning: The 'parserOptions.ecmaFeatures.experimentalObjectRestSpread' option is deprecated. Use 'parserOptions.ecmaVersion' instead.

like eslint-config-standard had before this commit, but for reasons I do not understand, eslint-plugin-vue doesn't seem to be triggering that warning despite using the same deprecated option.

[zevdg]

The fix might be as simple as updating your peer dependencies. IDK if any changes in eslint 5 actually broke this plugin

[michalsnik]

Hey @zevdg
We're aware of this, please take a look at #504

[Berkmann18]

I'm also having this issue

peer dep missing: eslint@^3.18.0 || ^4.0.0, required by eslint-plugin-vue@4.7.0

Here's the complete output of npm ls --depth=0:

├── @vue/cli-plugin-babel@3.0.0-rc.5
├── @vue/cli-plugin-e2e-nightwatch@3.0.0-rc.5
├── @vue/cli-plugin-eslint@3.0.0-rc.5
├── @vue/cli-plugin-unit-jest@3.0.0-rc.5
├── @vue/cli-service@3.0.0-rc.5
├── @vue/eslint-config-standard@3.0.0-rc.5
├── @vue/test-utils@1.0.0-beta.20
├── autoprefixer@9.0.1
├── babel-core@7.0.0-bridge.0
├── babel-jest@23.4.0
├── eslint@5.2.0
├── node-sass@4.9.2
├── sass-loader@7.0.3
├── vue@2.5.16
├── vue-router@3.0.1
└── vue-template-compiler@2.5.16

If I downgrade the eslint version I'll get this:

peer dep missing: eslint@>=5.0.0-alpha.2, required by eslint-config-standard@12.0.0-alpha.0