v-slot-style.md

Pattern: Malformed v-slot directive

Issue: -

Description

This rule enforces v-slot directive style which you should use shorthand or long form.

<template>
  <!-- ✓ GOOD -->
  <my-component v-slot="data">
    {{data}}
  </my-component>
  <my-component>
    <template #default>content</template>
    <template #one>content</template>
    <template #two>content</template>
  </my-component>

  <!-- ✗ BAD -->
  <my-component #default="data">
    {{data}}
  </my-component>
  <my-component>
    <template v-slot>content</template>
    <template v-slot:one>content</template>
    <template v-slot:two>content</template>
  </my-component>
</template>

Options

{
  "vue/v-slot-style": ["error", {
    "atComponent": "shorthand" | "longform" | "v-slot",
    "default": "shorthand" | "longform" | "v-slot",
    "named": "shorthand" | "longform",
  }]
}

Name	Type	Default Value	Description
atComponent	"shorthand" | "longform" | "v-slot"	"v-slot"	The style for the default slot at custom components directly (E.g. <my-component v-slot="">).
default	"shorthand" | "longform" | "v-slot"	"shorthand"	The style for the default slot at template wrappers (E.g. <template #default="">).
named	"shorthand" | "longform"	"shorthand"	The style for named slots (E.g. <template #named="">).

Each value means:

• "shorthand" ... use # shorthand. E.g. #default, #named, ...
• "longform" ... use v-slot: directive notation. E.g. v-slot:default, v-slot:named, ...
• "v-slot" ... use v-slot without that argument. This is shorter than #default shorthand.

And a string option is supported to be consistent to similar vue/v-bind-style and vue/v-on-style.

• ["error", "longform"] is same as ["error", { atComponent: "longform", default: "longform", named: "longform" }].
• ["error", "shorthand"] is same as ["error", { atComponent: "shorthand", default: "shorthand", named: "shorthand" }].

"longform"

<template>
  <!-- ✓ GOOD -->
  <my-component v-slot:default="data">
    {{data}}
  </my-component>
  <my-component>
    <template v-slot:default>content</template>
    <template v-slot:one>content</template>
    <template v-slot:two>content</template>
  </my-component>

  <!-- ✗ BAD -->
  <my-component v-slot="data">
    {{data}}
  </my-component>
  <my-component>
    <template #default>content</template>
    <template #one>content</template>
    <template #two>content</template>
  </my-component>
</template>

Further Reading

• eslint-plugin-vue - v-slot-style