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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'
const utils = require('../utils')
module.exports = {
meta: {
type: 'suggestion',
docs: {
description: 'enforce `v-bind` directive style',
categories: ['vue3-strongly-recommended', 'strongly-recommended'],
url: 'https://eslint.vuejs.org/rules/v-bind-style.html'
},
fixable: 'code',
schema: [{ enum: ['shorthand', 'longform'] }]
},
/** @param {RuleContext} context */
create(context) {
const preferShorthand = context.options[0] !== 'longform'
return utils.defineTemplateBodyVisitor(context, {
/** @param {VDirective} node */
"VAttribute[directive=true][key.name.name='bind'][key.argument!=null]"(
node
) {
const shorthandProp = node.key.name.rawName === '.'
const shorthand = node.key.name.rawName === ':' || shorthandProp
if (shorthand === preferShorthand) {
return
}
let message = "Expected 'v-bind' before ':'."
if (preferShorthand) {
message = "Unexpected 'v-bind' before ':'."
} else if (shorthandProp) {
message = "Expected 'v-bind:' instead of '.'."
}
context.report({
node,
loc: node.loc,
message,
*fix(fixer) {
if (preferShorthand) {
yield fixer.remove(node.key.name)
} else {
yield fixer.insertTextBefore(node, 'v-bind')
if (shorthandProp) {
// Replace `.` by `:`.
yield fixer.replaceText(node.key.name, ':')
// Insert `.prop` modifier if it doesn't exist.
const modifier = node.key.modifiers[0]
const isAutoGeneratedPropModifier =
modifier.name === 'prop' && modifier.rawName === ''
if (isAutoGeneratedPropModifier) {
yield fixer.insertTextBefore(modifier, '.prop')
}
}
}
}
})
}
})
}
}