eslint-plugin-light v0.0.18

eslint-plugin-pmd

eslint插件

1. Installation

You'll first need to install ESLint:

npm i eslint --save-dev

Next, install eslint-plugin-pmd:

npm install @tencent/eslint-plugin-pmd --save-dev

2. Usage

Add pmd to the plugins section of your .eslintrc configuration file. You can omit the eslint-plugin- prefix:

{
    "plugins": [
        "pmd"
    ]
}

Then configure the rules you want to use under the rules section.

{
    "rules": {
        "pmd/rule-name": 2
    }
}

or use extends：

{
  extends: ['plugin:pmd/recommended'],
}

3. Supported Rules

3.1. pmd/valid-vue-comp-import

禁止从js文件中加载Vue组件

比如，

1. 导入地址是js/ts文件

import SomeComp from 'src/local-component/ui/pages/user/account-manage/index.js';

// 或者省略了js/ts文件后缀
import SomeComp from 'src/local-component/ui/pages/user/account-manage/index';

如果加了--fix，会被转换为：

import SomeComp from 'src/local-component/ui/pages/user/account-manage/xxx.vue';

注意上面的xxx.vue是从index.js中分析得到的原始文件路径。

2. 导入一个目录，但目录存在index.js，这时候不管存不存在index.vue，uniapp转换都会失败

import SomeComp from 'src/local-component/ui/pages/user/account-manage';

可转换为：

import SomeComp from 'src/local-component/ui/pages/user/account-manage/xxx.vue';

3. 具名导入

import {
  AComp,
  BComp,
  CComp,
  DComp,
} from './comp';

可转换为：

import AComp from 'src/local-component/module/tip-match/tip-match-schedule-tree-new/comp/a.vue';
import BComp from 'src/local-component/module/tip-match/tip-match-schedule-tree-new/comp/b.vue';
import CComp from 'src/local-component/module/tip-match/tip-match-schedule-tree-new/comp/c.vue';
import DComp from 'src/local-component/module/tip-match/tip-match-schedule-tree-new/comp/d.vue';

3.2. pmd/no-plus-turn-number

禁止在vue的template中用+号转换字符串为数字

比如：

<ScheduleItem
  :child-id="+childId"
/>

如果加了--fix，会被转化成：

<ScheduleItem
  :child-id="parseInt(childId, 10)"
/>

3.3 no-complex-key

不要在vue模板中使用复杂的key。包括：

1. 字符串拼接，如：

:key="`hold` + index"`

2. 模板字符串，如：

:key="`hold-${index}`"

3. 将key提到一个函数中，如：

:key="getHoldKey(index)"

getHoldKey(index) {
  return `hold${index}`
}

最佳方式其实是提前处理好数据，这样性能会更好，也避免了key重复。

getData() {
  items = items.map((item,index) => ({
    ...item,
    key: `hold-${index}`
  }))
}

uniapp中，key重复的话，会造成挂载在组件上面的事件参数为undefined，从而不成功。