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enforce valid v-for directives

  • ⚙️ 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"].

This rule checks whether every v-for directive is valid.

📖 Rule Details

This rule reports v-for directives in the following cases:

  • The directive has that argument. E.g. <div v-for:aaa></div>
  • The directive has that modifier. E.g. <div v-for.bbb></div>
  • The directive does not have that attribute value. E.g. <div v-for></div>
  • If the element which has the directive is a custom component, the component does not have v-bind:key directive. E.g. <your-component v-for="item in list"></your-component>
  • The v-bind:key directive does not use the variables which are defined by the v-for directive. E.g. <div v-for="x in list" :key="foo"></div>

If the element which has the directive is a reserved element, this rule does not report it even if the element does not have v-bind:key directive because it's not fatal error. vue/require-v-for-key rule reports it.

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This rule does not check syntax errors in directives. vue/no-parsing-error rule reports it. The following cases are syntax errors:

  • The directive's value isn't alias in expr. E.g. <div v-for="foo"></div>
  • The alias isn't LHS. E.g. <div v-for="foo() in list"></div>

🔧 Options


🚀 Version

This rule was introduced in eslint-plugin-vue v3.11.0

🔍 Implementation