vue/no-parsing-error not reporting when using eslint-loader + webpack

[OliverJEvans]

Tell us about your environment

• ESLint Version: 5.2.0 (although also happens on 4.19.1)
• eslint-plugin-vue Version: 5.0.0-beta.0 (although also happens on 4.2.2)
• Node Version: 8.11.2
• eslint-loader Version: 2.1.0
• webpack Version: 3.12.0

Please show your full configuration:

.eslintrc.json

{
    "extends": [
        "plugin:vue/essential"
    ]
}

webpack config - module rules

{
    enforce: 'pre',
    test: /\.(js|vue)$/,
    exclude: /node_modules/,
    loader: 'eslint-loader',
    options: {
        cache: false,
        configFile: path.join(process.cwd(), '.eslintrc.json')
    },
}

What did you expect to happen?

When using eslint cli, vue/no-parsing-error errors as expected when there's empty braces in a vue app {{}}. But when using eslint-loader for webpack the error does not appear.

Unsure if this is the only rule that is affected but so far it appears to be the only one.

Also unsure if this is an issue with eslint-loader or the rule itself but hopefully we can figure out where to point fingers.

I can recreate this by:

• Creating a new vue cli project using the webpack-simple template (vue init webpack-simple)
• Installing eslint-plugin-vue, eslint and the eslint-loader
• Add the webpack config above to the default config
• Add the .eslintrc.json file.
• Put some empty braces in the App.vue file
• Run eslint cli & webpack
• Compare results

[mysticatea]

Thank you for this issue.

The result of no-parsing-error rule depends on only source code text.
So if you see different behavior between eslint and eslint-loader, it can be an issue of eslint-loader.

And please note that the latest vue-eslint-parser changed the behavior around empty mustaches to fix #398. The vue/no-parsing-error rule no longer reports empty mustaches on the latest version (https://github.com/mysticatea/vue-eslint-parser/releases/tag/v3.2.0).

[soddygo]

it help me to solver this problem