vue hello world项目
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/**
* @author Toru Nagashima
* @copyright 2017 Toru Nagashima. All rights reserved.
* See LICENSE file in root directory for full license.
*/
'use strict'
// ------------------------------------------------------------------------------
// Requirements
// ------------------------------------------------------------------------------
const utils = require('../utils')
// ------------------------------------------------------------------------------
// Rule Definition
// ------------------------------------------------------------------------------
module.exports = {
meta: {
type: 'problem',
docs: {
description: 'require `v-bind:key` with `v-for` directives',
categories: ['vue3-essential', 'essential'],
url: 'https://eslint.vuejs.org/rules/require-v-for-key.html'
},
fixable: null,
schema: []
},
/** @param {RuleContext} context */
create(context) {
/**
* Check the given element about `v-bind:key` attributes.
* @param {VElement} element The element node to check.
*/
function checkKey(element) {
if (utils.hasDirective(element, 'bind', 'key')) {
return
}
if (element.name === 'template' || element.name === 'slot') {
for (const child of element.children) {
if (child.type === 'VElement') {
checkKey(child)
}
}
} else if (!utils.isCustomComponent(element)) {
context.report({
node: element.startTag,
loc: element.startTag.loc,
message:
"Elements in iteration expect to have 'v-bind:key' directives."
})
}
}
return utils.defineTemplateBodyVisitor(context, {
/** @param {VDirective} node */
"VAttribute[directive=true][key.name.name='for']"(node) {
checkKey(node.parent.parent)
}
})
}
}