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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: 'enforce valid `v-if` directives',
category: 'essential',
url: 'https://eslint.vuejs.org/rules/valid-v-if.html'
},
fixable: null,
schema: []
},
create (context) {
return utils.defineTemplateBodyVisitor(context, {
"VAttribute[directive=true][key.name='if']" (node) {
const element = node.parent.parent
if (utils.hasDirective(element, 'else')) {
context.report({
node,
loc: node.loc,
message: "'v-if' and 'v-else' directives can't exist on the same element. You may want 'v-else-if' directives."
})
}
if (utils.hasDirective(element, 'else-if')) {
context.report({
node,
loc: node.loc,
message: "'v-if' and 'v-else-if' directives can't exist on the same element."
})
}
if (node.key.argument) {
context.report({
node,
loc: node.loc,
message: "'v-if' directives require no argument."
})
}
if (node.key.modifiers.length > 0) {
context.report({
node,
loc: node.loc,
message: "'v-if' directives require no modifier."
})
}
if (!utils.hasAttributeValue(node)) {
context.report({
node,
loc: node.loc,
message: "'v-if' directives require that attribute value."
})
}
}
})
}
}