valid-v-bind-sync.md

Pattern: Invalid .sync modifier

Issue: -

Description

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>

Further Reading

• eslint-plugin-vue - valid-v-bind-sync