What we want to do is checking if user write nested if statements which actually can combine to one: // BAD if (a) { console.log("a"); } else { if (b) { console.log("b"); } } // GOOD if (a) { console.log("a"); } else if (b) {…

To write a simple Babel plugin, we can use http://astexplorer.net/ to help us. The plugin we want to write is: var foo = 'o' var bar = 'o' foo === bar function foo(foo, bar) { foo === bar; } We want to trasnform the code which highlighted in foo() fu…

We want to write a Babel Plugin, which move 'const versionRegex = /(/d+)\.(/d+)\.(/d+)/gi' out of function scope and put it into global scope. Code: function getVersion(versionString) { const versionRegex = /(\d+)\.(\d+)\.(\d+)/gi var x = /foo/.text(…

1.错误描述 An internal error occurred during: "Requesting JavaScript AST from selection".      GC overhead limit exceeded 单击"OK"后,提示如下图所示: 2.错误原因 由于用Eclipse编写JavaScript时,出现了return,位置不对,导致错误 3.解决办法 Windows--->Preference--->JavaScript…

const disallowedMethods = ["log", "info", "warn", "error", "dir"]; module.exports = { meta: { docs: { description: "Disallow use of console", category: "Best Practices", recommended: tr…

The rule we want to write is show warning if user using console method: // valid foo.console() console() info() console.baz() // invalid console.log() console.info() console.warn() Rule: const disallowedMethods = ["log", "info", "…

1.1 Pattern "theme of recurring events or objects… it can be a template or model which can be used to generate things" (http://en.wikipedia.org/wiki/Pattern). • Design patterns - Elements of Reusable Object-Oriented Software. • Coding patterns -…

前言 虽然现在已经有很多实用的 ESLint 插件了,但随着项目不断迭代发展,你可能会遇到已有 ESLint 插件不能满足现在团队开发的情况.这时候,你需要自己来创建一个 ESLint 插件. 本文我将带你了解各种Lint工具的大致历史,然后一步一步地创建一个属于你自己的 ESLint 插件,以及教你如何利用AST抽象语法树来制定这个插件的规则. 以此来带你了解 ESLint 的实现原理. 课外知识:Lint 简史 Lint 是为了解决代码不严谨而导致各种问题的一种工具.比如 == 和 ===…

Awesome系列的JavaScript资源整理.awesome-javascript是sorrycc发起维护的 JS 资源列表,内容包括:包管理器.加载器.测试框架.运行器.QA.MVC框架和库.模板引擎.数据可视化.时间轴.编辑器等. 前端MVC框架与库 angular.js - 前端MVVM框架,支持双向绑定,实现MVC架构,增强Web应用 aurelia - A Javascript client framework for mobile, desktop and web. backbo…

[导读]:GitHub 上有一个 Awesome – XXX 系列的资源整理.awesome-javascript 是 sorrycc 发起维护的 JS 资源列表,内容包括:包管理器.加载器.测试框架.运行器.QA.MVC框架和库.模板引擎.数据可视化.时间轴.编辑器等等. 伯乐在线已在 GitHub 上发起「JavaScript 资源大全中文版」的整理.欢迎扩散.欢迎加入. https://github.com/jobbole/awesome-javascript-cn 包管理器 管理着 ja…