vue hello world项目
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/**
* @author Yosuke Ota
* See LICENSE file in root directory for full license.
*/
'use strict'
const { ReferenceTracker } = require('eslint-utils')
const utils = require('../utils')
/**
* @typedef {import('eslint-utils').TYPES.TraceMap} TraceMap
*/
const LIFECYCLE_HOOKS = [
'onBeforeMount',
'onBeforeUnmount',
'onBeforeUpdate',
'onErrorCaptured',
'onMounted',
'onRenderTracked',
'onRenderTriggered',
'onUnmounted',
'onUpdated',
'onActivated',
'onDeactivated'
]
module.exports = {
meta: {
type: 'suggestion',
docs: {
description: 'disallow asynchronously registered lifecycle hooks',
categories: ['vue3-essential'],
url: 'https://eslint.vuejs.org/rules/no-lifecycle-after-await.html'
},
fixable: null,
schema: [],
messages: {
forbidden: 'The lifecycle hooks after `await` expression are forbidden.'
}
},
/** @param {RuleContext} context */
create(context) {
/**
* @typedef {object} SetupScopeData
* @property {boolean} afterAwait
* @property {[number,number]} range
*/
/**
* @typedef {object} ScopeStack
* @property {ScopeStack | null} upper
* @property {FunctionDeclaration | FunctionExpression | ArrowFunctionExpression} scopeNode
*/
/** @type {Set<ESNode>} */
const lifecycleHookCallNodes = new Set()
/** @type {Map<FunctionDeclaration | FunctionExpression | ArrowFunctionExpression, SetupScopeData>} */
const setupScopes = new Map()
/** @type {ScopeStack | null} */
let scopeStack = null
return utils.compositingVisitors(
{
Program() {
const tracker = new ReferenceTracker(context.getScope())
const traceMap = {
/** @type {TraceMap} */
vue: {
[ReferenceTracker.ESM]: true
}
}
for (const lifecycleHook of LIFECYCLE_HOOKS) {
traceMap.vue[lifecycleHook] = {
[ReferenceTracker.CALL]: true
}
}
for (const { node } of tracker.iterateEsmReferences(traceMap)) {
lifecycleHookCallNodes.add(node)
}
}
},
utils.defineVueVisitor(context, {
onSetupFunctionEnter(node) {
setupScopes.set(node, {
afterAwait: false,
range: node.range
})
},
/**
* @param {FunctionExpression | FunctionDeclaration | ArrowFunctionExpression} node
*/
':function'(node) {
scopeStack = {
upper: scopeStack,
scopeNode: node
}
},
':function:exit'() {
scopeStack = scopeStack && scopeStack.upper
},
/** @param {AwaitExpression} node */
AwaitExpression(node) {
if (!scopeStack) {
return
}
const setupScope = setupScopes.get(scopeStack.scopeNode)
if (!setupScope || !utils.inRange(setupScope.range, node)) {
return
}
setupScope.afterAwait = true
},
/** @param {CallExpression} node */
CallExpression(node) {
if (!scopeStack) {
return
}
const setupScope = setupScopes.get(scopeStack.scopeNode)
if (
!setupScope ||
!setupScope.afterAwait ||
!utils.inRange(setupScope.range, node)
) {
return
}
if (lifecycleHookCallNodes.has(node)) {
if (node.arguments.length >= 2) {
// Has target instance. e.g. `onMounted(() => {}, instance)`
return
}
context.report({
node,
messageId: 'forbidden'
})
}
},
onSetupFunctionExit(node) {
setupScopes.delete(node)
}
})
)
}
}