petermihailov
/ checkForUndefinedCSSClasses.js
Created
February 15, 2023 16:33
— forked from broofa/checkForUndefinedCSSClasses.js
ES module for detecting undefined CSS classes (uses mutation observer to monitor DOM changes). `console.warn()`s undefined classes.
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| /** | |
| * Sets up a DOM MutationObserver that watches for elements using undefined CSS | |
| * class names. Performance should be pretty good, but it's probably best to | |
| * avoid using this in production. | |
| * | |
| * Usage: | |
| * | |
| * import cssCheck from './checkForUndefinedCSSClasses.js' | |
| * | |
| * // Call before DOM renders (e.g. in <HEAD> or prior to React.render()) |