June 2016
Beginner
248 pages
5h 18m
English
Content preview from Learning Node.js for .NET DevelopersBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Checking code style with ESLint
Although we don't need a compiler, we can still benefit from having the computer perform static analysis of our code. Linting tools are common in many languages for spotting common programming errors that may lead to subtle bugs or confusing code. You may be familiar with CodeRush, StyleCop, and others for .NET, or CheckStyle, Findbugs, Sonar, and others for Java.
We'll be using a JavaScript/ECMAScript linting tool called ESLint. Let's first install it globally:
> npm install -g eslint
Now create a config file to tell ESLint what rules to use as .eslintrc.json:
{ "extends": "eslint:recommended", "env": { "node": true, "es6": true, "mocha": true, "browser": true, "jquery": true }, "rules": { "semi": [2, "always"], "quotes": ...Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.