vue hello world项目
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3 years ago
/**
* @author Yosuke Ota
* See LICENSE file in root directory for full license.
*/
'use strict'
// ------------------------------------------------------------------------------
// Requirements
// ------------------------------------------------------------------------------
const utils = require('../utils')
// ------------------------------------------------------------------------------
// Helpers
// ------------------------------------------------------------------------------
// 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'
])
// ------------------------------------------------------------------------------
// Rule Definition
// ------------------------------------------------------------------------------
module.exports = {
meta: {
type: 'problem',
docs: {
description: 'disallow unnecessary `<template>`',
categories: ['vue3-recommended', 'recommended'],
url: 'https://eslint.vuejs.org/rules/no-lone-template.html'
},
fixable: null,
schema: [
{
type: 'object',
properties: {
ignoreAccessible: {
type: 'boolean'
}
},
additionalProperties: false
}
],
messages: {
requireDirective: '`<template>` require directive.'
}
},
/** @param {RuleContext} context */
create(context) {
const options = context.options[0] || {}
const ignoreAccessible = options.ignoreAccessible === true
/**
* @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
}
return utils.defineTemplateBodyVisitor(context, {
/** @param {VStartTag} node */
"VElement[name='template'][parent.type='VElement'] > VStartTag"(node) {
if (
node.attributes.some((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
})
) {
return
}
if (
ignoreAccessible &&
node.attributes.some((attr) => {
const keyName = getKeyName(attr)
return keyName === 'id' || keyName === 'ref'
})
) {
return
}
context.report({
node,
messageId: 'requireDirective'
})
}
})
}
}