Is there a tool for detecting browser compatibility issues in my Javascript code? [closed]

Question

I'm writing a Javascript library, and I'd like to be able to run it through some tool that will

1. detect any methods that are incompatible with certain browsers, and/or
2. tell me which browsers do support my code.

So far I can't find anything like this. Does it really not exist?


Prior Research:

• I've found http://caniuse.com for checking specific methods, but it doesn't help me identify problems I don't know about.
• I've read question after question about browser compatibility, but found nothing that fits.
• I've found a bunch of tools for running my unit tests in different browsers (e.g., Sauce Labs), but that's not really what I'm trying to do.

Lyly

Answer 1

I'd recommend you to use this website http://jscc.info/ (wayback machine) or https://seedmanc.github.io/jscc/

Its done the job for me in the past.

Expostulatory

Looks like the domain expired. The source is up at github.com/tbusser/jscc if you want to dig deep and revive it. – Ragin

Hosted again by a fork here: seedmanc.github.io/jscc – Rizal

Answer 2

You can use eslint-plugin-compat, a plugin for the ESlint linting utility. You can even use Browserlist to configure the browsers you want to support.

Installation is very easy. You'll have to install eslint and this plugin:

npm install --save-dev eslint-plugin-compat

or

yarn add --dev eslint eslint-plugin-compat

And add a ESlint configuration file:

// .eslintrc
{
  "extends": ["plugin:compat/recommended"]
}

Add the supported browsers to your package.json file:

// sample configuration (package.json)
{
  // ...
  "browserslist": ["last 2 Chrome versions", "IE 11"],
}

And then run the linter:

eslint yourfile.js

In my case this was the output:

92:9   error  Promise.all() is not supported in IE 11  compat/compat
94:9   error  Promise.all() is not supported in IE 11  compat/compat

Corn