eslint-plugin-caniuse

WORK IN PROGRESS

Goals

• Allow configuration of target browser/s, percentage of feature supported
• Errors should report with the list of browsers no supported and the percentage of the feature
• Speed. This may involve caching the caniuse db
• Only lint against ES features and Web API's that cannot be polyfilled or transpiled

Idea

Default

 22:  navigator.serviceWorker
                ^^^^^^^^^^^^^ `ServiceWorker` is not supported in IE, Edge and Safari.
                               Has about 60% browser coverage 😢

Targeting Browsers

// in `.eslintrc`
{
    browsers: ['chrome', 'firefox', 'edge', 'safari'] // screw IE
}

 22:  navigator.serviceWorker
                ^^^^^^^^^^^^^ `ServiceWorker` is not supported in two of your target
                              browsers: Safari and Edge.

Inspiration

This project was inspired by a two hour argument I had with someone on the experience of web development and if it is terrible or not. The premise they argued was that x browser doesn't support y feature while z browser does. Eventually, I agreed with him on this and checked made this plugin to save web developers from having to memorize browser compatibility of specs.