# vue/valid-v-bind-sync

enforce valid .sync modifier on v-bind directives

This rule checks whether every .sync modifier on v-bind directives is valid.

# 📖 Rule Details

This rule reports .sync modifier on v-bind directives in the following cases:

  • The .sync modifier does not have the attribute value which is valid as LHS. E.g. <MyComponent v-bind:aaa.sync="foo() + bar()" />
  • The .sync modifier is on non Vue-components. E.g. <input v-bind:aaa.sync="foo"></div>
  • The .sync modifier's reference is iteration variables. E.g. <div v-for="x in list"><MyComponent v-bind:aaa.sync="x" /></div>
<template> <!-- ✓ GOOD --> <MyComponent v-bind:aaa.sync="foo"/> <MyComponent :aaa.sync="foo"/> <div v-for="todo in todos"> <MyComponent v-bind:aaa.sync="todo.name"/> <MyComponent :aaa.sync="todo.name"/> </div> <!-- ✗ BAD --> <MyComponent v-bind:aaa.sync="foo + bar" /> <MyComponent :aaa.sync="foo + bar" /> <input v-bind:aaa.sync="foo"> <input :aaa.sync="foo"> <div v-for="todo in todos"> <MyComponent v-bind:aaa.sync="todo" /> <MyComponent :aaa.sync="todo" /> </div> </template>
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Note

This rule does not check syntax errors in directives because it's checked by no-parsing-error rule.

# 🔧 Options

Nothing.

# 📚 Further reading

# 🔍 Implementation

Last Updated: 12/26/2019, 4:47:48 AM