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83 lines
2.4 KiB
83 lines
2.4 KiB
1 year ago
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/**
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* @author Toru Nagashima
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* @copyright 2017 Toru Nagashima. All rights reserved.
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* See LICENSE file in root directory for full license.
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*/
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'use strict'
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const utils = require('../utils')
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module.exports = {
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meta: {
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type: 'problem',
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docs: {
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description: 'enforce valid `v-else` directives',
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categories: ['vue3-essential', 'essential'],
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url: 'https://eslint.vuejs.org/rules/valid-v-else.html'
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},
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fixable: null,
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schema: [],
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messages: {
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missingVIf:
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"'v-else' directives require being preceded by the element which has a 'v-if' or 'v-else-if' directive.",
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withVIf:
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"'v-else' and 'v-if' directives can't exist on the same element. You may want 'v-else-if' directives.",
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withVElseIf:
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"'v-else' and 'v-else-if' directives can't exist on the same element.",
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unexpectedArgument: "'v-else' directives require no argument.",
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unexpectedModifier: "'v-else' directives require no modifier.",
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unexpectedValue: "'v-else' directives require no attribute value."
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}
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},
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/** @param {RuleContext} context */
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create(context) {
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return utils.defineTemplateBodyVisitor(context, {
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/** @param {VDirective} node */
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"VAttribute[directive=true][key.name.name='else']"(node) {
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const element = node.parent.parent
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if (!utils.prevElementHasIf(element)) {
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context.report({
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node,
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messageId: 'missingVIf'
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})
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}
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if (utils.hasDirective(element, 'if')) {
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context.report({
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node,
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messageId: 'withVIf'
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})
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}
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if (utils.hasDirective(element, 'else-if')) {
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context.report({
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node,
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messageId: 'withVElseIf'
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})
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}
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if (node.key.argument) {
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context.report({
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node: node.key.argument,
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messageId: 'unexpectedArgument'
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})
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}
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if (node.key.modifiers.length > 0) {
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context.report({
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node,
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loc: {
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start: node.key.modifiers[0].loc.start,
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end: node.key.modifiers[node.key.modifiers.length - 1].loc.end
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},
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messageId: 'unexpectedModifier'
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})
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}
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if (node.value) {
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context.report({
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node: node.value,
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messageId: 'unexpectedValue'
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})
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}
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}
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})
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}
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}
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