no-shared-component-data.md

pageClass	sidebarDepth	title	description	since
rule-details	0	vue/no-shared-component-data	enforce component's data property to be a function	v3.8.0

vue/no-shared-component-data

enforce component's data property to be a function

• ⚙️ This rule is included in all of "plugin:vue/vue3-essential", *.configs["flat/essential"], "plugin:vue/essential", *.configs["flat/vue2-essential"], "plugin:vue/vue3-strongly-recommended", *.configs["flat/strongly-recommended"], "plugin:vue/strongly-recommended", *.configs["flat/vue2-strongly-recommended"], "plugin:vue/vue3-recommended", *.configs["flat/recommended"], "plugin:vue/recommended" and *.configs["flat/vue2-recommended"].
• 🔧 The --fix option on the command line can automatically fix some of the problems reported by this rule.

When using the data property on a component (i.e. anywhere except on new Vue), the value must be a function that returns an object.

📖 Rule Details

When the value of data is an object, it’s shared across all instances of a component.

<script>
/* ✓ GOOD */
Vue.component('some-comp', {
  data: function () {
    return {
      foo: 'bar'
    }
  }
})

export default {
  data() {
    return {
      foo: 'bar'
    }
  }
}
</script>

<script>
/* ✗ BAD */
Vue.component('some-comp', {
  data: {
    foo: 'bar'
  }
})

export default {
  data: {
    foo: 'bar'
  }
}
</script>

🔧 Options

Nothing.

📚 Further Reading

• Style guide (for v2) - Component data
• API - data
• API (for v2) - data

🚀 Version

This rule was introduced in eslint-plugin-vue v3.8.0

🔍 Implementation

• Rule source
• Test source