You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
108 lines
2.5 KiB
108 lines
2.5 KiB
/**
|
|
* @author Yosuke Ota
|
|
* See LICENSE file in root directory for full license.
|
|
*/
|
|
'use strict'
|
|
|
|
const utils = require('../utils')
|
|
|
|
// https://github.com/vuejs/vue-next/blob/64e2f4643602c5980361e66674141e61ba60ef70/packages/compiler-core/src/parse.ts#L405
|
|
const SPECIAL_TEMPLATE_DIRECTIVES = new Set([
|
|
'if',
|
|
'else',
|
|
'else-if',
|
|
'for',
|
|
'slot'
|
|
])
|
|
|
|
/**
|
|
* @param {VAttribute | VDirective} attr
|
|
*/
|
|
function getKeyName(attr) {
|
|
if (attr.directive) {
|
|
if (attr.key.name.name !== 'bind') {
|
|
// no v-bind
|
|
return null
|
|
}
|
|
if (
|
|
!attr.key.argument ||
|
|
attr.key.argument.type === 'VExpressionContainer'
|
|
) {
|
|
// unknown
|
|
return null
|
|
}
|
|
return attr.key.argument.name
|
|
}
|
|
return attr.key.name
|
|
}
|
|
|
|
/**
|
|
* @param {VAttribute | VDirective} attr
|
|
*/
|
|
function isFragmentTemplateAttribute(attr) {
|
|
if (attr.directive) {
|
|
const directiveName = attr.key.name.name
|
|
if (SPECIAL_TEMPLATE_DIRECTIVES.has(directiveName)) {
|
|
return true
|
|
}
|
|
if (directiveName === 'slot-scope') {
|
|
// `slot-scope` is deprecated in Vue.js 2.6
|
|
return true
|
|
}
|
|
if (directiveName === 'scope') {
|
|
// `scope` is deprecated in Vue.js 2.5
|
|
return true
|
|
}
|
|
}
|
|
|
|
const keyName = getKeyName(attr)
|
|
if (keyName === 'slot') {
|
|
// `slot` is deprecated in Vue.js 2.6
|
|
return true
|
|
}
|
|
|
|
return false
|
|
}
|
|
|
|
module.exports = {
|
|
meta: {
|
|
type: 'problem',
|
|
docs: {
|
|
description: 'disallow useless attribute on `<template>`',
|
|
categories: ['vue3-essential', 'vue2-essential'],
|
|
url: 'https://eslint.vuejs.org/rules/no-useless-template-attributes.html'
|
|
},
|
|
fixable: null,
|
|
schema: [],
|
|
messages: {
|
|
unexpectedAttr: 'Unexpected useless attribute on `<template>`.',
|
|
unexpectedDir: 'Unexpected useless directive on `<template>`.'
|
|
}
|
|
},
|
|
/** @param {RuleContext} context */
|
|
create(context) {
|
|
return utils.defineTemplateBodyVisitor(context, {
|
|
/** @param {VStartTag} node */
|
|
"VElement[name='template'][parent.type='VElement'] > VStartTag"(node) {
|
|
if (!node.attributes.some(isFragmentTemplateAttribute)) {
|
|
return
|
|
}
|
|
|
|
for (const attr of node.attributes) {
|
|
if (isFragmentTemplateAttribute(attr)) {
|
|
continue
|
|
}
|
|
const keyName = getKeyName(attr)
|
|
if (keyName === 'key') {
|
|
continue
|
|
}
|
|
context.report({
|
|
node: attr,
|
|
messageId: attr.directive ? 'unexpectedDir' : 'unexpectedAttr'
|
|
})
|
|
}
|
|
}
|
|
})
|
|
}
|
|
}
|