/
no-deprecated-props-default-this.js
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/
no-deprecated-props-default-this.js
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/**
* @author Yosuke Ota
* 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:
'disallow deprecated `this` access in props default function (in Vue.js 3.0.0+)',
categories: ['vue3-essential'],
url: 'https://eslint.vuejs.org/rules/no-deprecated-props-default-this.html'
},
fixable: null,
schema: [],
messages: {
deprecated:
'Props default value factory functions no longer have access to `this`.'
}
},
/** @param {RuleContext} context */
create(context) {
/**
* @typedef {object} ScopeStack
* @property {ScopeStack | null} upper
* @property {FunctionExpression | FunctionDeclaration} node
* @property {boolean} propDefault
*/
/** @type {Set<FunctionExpression>} */
const propsDefault = new Set()
/** @type {ScopeStack | null} */
let scopeStack = null
/**
* @param {FunctionExpression | FunctionDeclaration | ArrowFunctionExpression} node
*/
function onFunctionEnter(node) {
if (node.type === 'ArrowFunctionExpression') {
return
}
if (scopeStack) {
scopeStack = {
upper: scopeStack,
node,
propDefault: false
}
} else if (node.type === 'FunctionExpression' && propsDefault.has(node)) {
scopeStack = {
upper: scopeStack,
node,
propDefault: true
}
}
}
/**
* @param {FunctionExpression | FunctionDeclaration | ArrowFunctionExpression} node
*/
function onFunctionExit(node) {
if (scopeStack && scopeStack.node === node) {
scopeStack = scopeStack.upper
}
}
/**
* @param {Expression|SpreadElement|null} node
*/
function isFunctionIdentifier(node) {
return node && node.type === 'Identifier' && node.name === 'Function'
}
/**
* @param {Expression} node
* @returns {boolean}
*/
function hasFunctionType(node) {
if (isFunctionIdentifier(node)) {
return true
}
if (node.type === 'ArrayExpression') {
return node.elements.some(isFunctionIdentifier)
}
return false
}
return utils.defineVueVisitor(context, {
onVueObjectEnter(node) {
for (const prop of utils.getComponentProps(node)) {
if (prop.type !== 'object') {
continue
}
if (prop.value.type !== 'ObjectExpression') {
continue
}
const def = utils.findProperty(prop.value, 'default')
if (!def) {
continue
}
const type = utils.findProperty(prop.value, 'type')
if (type && hasFunctionType(type.value)) {
// ignore function type
continue
}
if (def.value.type !== 'FunctionExpression') {
continue
}
propsDefault.add(def.value)
}
},
':function': onFunctionEnter,
':function:exit': onFunctionExit,
ThisExpression(node) {
if (scopeStack && scopeStack.propDefault) {
context.report({
node,
messageId: 'deprecated'
})
}
}
})
}
}