vue hello world项目
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/**
* @fileoverview enforce `v-for` directive's delimiter style
* @author Flo Edelmann
* @copyright 2020 Flo Edelmann. 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: 'layout',
docs: {
description: "enforce `v-for` directive's delimiter style",
categories: undefined,
recommended: false,
url: 'https://eslint.vuejs.org/rules/v-for-delimiter-style.html'
},
fixable: 'code',
schema: [{ enum: ['in', 'of'] }]
},
/** @param {RuleContext} context */
create(context) {
const preferredDelimiter =
/** @type {string|undefined} */ (context.options[0]) || 'in'
return utils.defineTemplateBodyVisitor(context, {
/** @param {VForExpression} node */
VForExpression(node) {
const tokenStore =
context.parserServices.getTemplateBodyTokenStore &&
context.parserServices.getTemplateBodyTokenStore()
const delimiterToken = /** @type {Token} */ (
tokenStore.getTokenAfter(
node.left.length
? node.left[node.left.length - 1]
: tokenStore.getFirstToken(node),
(token) => token.type !== 'Punctuator' || token.value !== ')'
)
)
if (delimiterToken.value === preferredDelimiter) {
return
}
context.report({
node,
loc: node.loc,
message: `Expected '{{preferredDelimiter}}' instead of '{{usedDelimiter}}' in 'v-for'.`,
data: {
preferredDelimiter,
usedDelimiter: delimiterToken.value
},
*fix(fixer) {
yield fixer.replaceText(delimiterToken, preferredDelimiter)
}
})
}
})
}
}