'v-slot' directive doesn't support any modifier

I don't see any v-slot in the code you provided so I can show you only my usecase.

With Eslint error:

<template v-slot:item.actions="{ item }">

Without error:

<template v-slot:[`item.actions`]="{ item }">

In eslint-plugin-vue@^7.1.0, you can use allowModifiers option in vue/valid-v-slot rule.

// .eslintrc.js
'vue/valid-v-slot': ['error', {
  allowModifiers: true,
}],

vue/valid-v-slot #options

For me the following Entry in settings.json fixed the problem:

 "vetur.validation.template": false

EDIT: As notified by the comments and Hexodus' (correct) answer, you can work around the linting warning by using dynamic slot names that return a string(template). 'Not enabling' is no longer recommended, as this is now a standard rule. Thus, I recommend using Hexodus' method over disabling the valid v-slot rule altogether.

Original Post:

You can't really fix this linting warning.

Vue syntax for modifiers use the dot to alter the way a directive functions (e.g. v-model.number)

The way Vuetify dynamically names their slots uses a dot in order to select a specific part of the component (#header.data-table-select).

ESLint can't distinguish whether you're trying to set a modifier on a slot (which is impossible), or if you have a slot name that contains a dot.

The easiest thing you can do is disable the rule. Since the 'valid-v-slot' rule isn't enabled by default by any of the base configurations of eslint-plugin-vue, you should be able to find it under "rules" in your eslint config.

I tried Hexodus' answer, but the template wasn't rendering at all in my case.

I got it to work perfectly with this, without any eslint rule modification:

<template #[`item.actions`]="{ item }">

Try this:

<template v-slot:item.createdDate="{ item }">

if you use the format vetur, add this option in vscode settings:

"vetur.validation.template": false

Maybe this isn't the answer, and you also may not buy into my solution but this is what I did.

ANS: I downgraded Vetur to version 0.23! It worked! (Waiting a new version release that addresses the issue.

Open the Extensions side panel on VSCode, right click Vetur and select install other versions.

Alternatively, if your code is working fine, a line before the vue-eslint-plugin error you can try <!-- eslint-disable-next-line vue/no-v-html --> to disable eslint for next line or <!-- eslint-disable --> to disable every disable linting below it.

Worked for some people but not for me and may not work for you. Either way, prefer Vetur downgrade

I am using laravel framework, and vuetify. Previous codes suddenly reported eslint errors with red lines - vue/valid-v-slot directive, adding multiple root nodes to the template, and so on without recommending any quick fix, yet they are all working fine. Answers I got from search never yielded any result till I downgraded, any other solution will be so welcomed!

It worked for me:

in .vue

<template v-slot:[getitemcontrols()]="props">

in .js

 methods: {
    getitemcontrols() {
      return `item.controls`;
    },

For me this config added to package.json worked

"eslintConfig": {
    "root": true,
    "env": {
      "node": true
    },
    "extends": [
      "plugin:vue/base"
    ],
    "rules": {},
    "parserOptions": {
      "parser": "babel-eslint"
    }
  }