		!function(o,e){"object"==typeof exports&&"undefined"!=typeof module?e(exports):"function"==typeof define&&define.amd?define(["exports"],e):e((o=o\|\|self).focusWithin={})}(this,function(o){"use strict";var e,n;function t(o){var n,t;t\|\|(window.requestAnimationFrame(function(){if(n=document.activeElement,t=!1,Array.prototype.slice.call(document.getElementsByClassName(e)).forEach(function(o){o.classList.remove(e)}),"focus"===o.type&&n&&n!==document.body)for(var i=n;i&&1===i.nodeType;i=i.parentNode)i.classList.add(e)}),t=!0)}o.loadPolyfill=function(o){!function(o){return"string"!=typeof o?(console.error("focus-within-polyfill:"+o+" is not a string"),!1):/[\s]/.test(o)?(console.error('focus-within-polyfill: class name "className" cannot contain white spaces.'),!1):/-?[_a-zA-Z]+[_-a-zA-Z0-9]*/.test(o)}(e=o\|\|"focus-within")?console.warn("focus-within-polyfill: cannot load. "+e+" is not a valid class name"):n\|\|function(){try{return document.querySelector(":focus-within"),console.info("focus-within-polyfill: focus-within supported"),!0}catch(o){return console.info("focus-within-polyfill: focus-within not supported"),!1}}()\|\|(document.addEventListener("focus",t,!0),document.addEventListener("blur",t,!0),n=!0,console.info("focus-within-polyfill: loaded."))},o.unloadPolyfill=function(){n?(document.removeEventListener("focus",t,!0),document.removeEventListener("blur",t,!0),n=!1,console.info("focus-within-polyfill: unloaded.")):console.warn("focus-within-polyfill: cannot unload. Polyfill was never loaded.")},Object.defineProperty(o,"__esModule",{value:!0})});
		//# sourceMappingURL=focus-within-polyfill.js.map

112

package.json

		{
		"name": "focus-within-polyfill",
		"version": "3.0.1",
		"description": "focus-within pseudo selector polyfill",
		"main": "dist/focus-within-polyfill.js",
		"module": "dist/focus-within-polyfill.mjs",
		"jsnext:main": "dist/focus-within-polyfill.mjs",
		"scripts": {
		"build": "rollup -c rollup.config.js --environment BUILD:production",
		"watch": "rollup -c rollup.config.js --environment BUILD:development -w",
		"preversion": "npm test",
		"version": "npm run build",
		"postversion": "git push && git push --tags",
		"prepublish": "npm run build",
		"test": "echo \"Error: no test specified\" && exit 0"
		},
		"repository": {
		"type": "git",
		"url": "https://github.com/matteobad/focus-within-polyfill"
		},
		"bugs": {
		"url": "https://github.com/matteobad/focus-within-polyfill/issues"
		},
		"keywords": [
		"polyfill",
		"focus",
		"blur",
		"focus-within",
		"pseudo-class",
		"no-jquery",
		"vanilla",
		"vanilla-js"
		],
		"author": "Matteo Badini",
		"license": "MIT",
		"dependencies": {},
		"devDependencies": {
		"rollup": "^1.10.1",
		"rollup-plugin-eslint": "^5.1.0",
		"rollup-plugin-terser": "^4.0.4"
		},
		"browserslist": [
		"defaults"
		]
		"name": "focus-within-polyfill",
		"version": "3.1.0",
		"description": "focus-within pseudo selector polyfill",
		"main": "dist/focus-within-polyfill.js",
		"module": "dist/focus-within-polyfill.mjs",
		"jsnext:main": "dist/focus-within-polyfill.mjs",
		"scripts": {
		"commit": "git-cz",
		"clean": "rimraf dist",
		"lint": "eslint src test",
		"build": "rollup -c rollup.config.js --environment BUILD:production",
		"watch": "rollup -c rollup.config.js --environment BUILD:development -w",
		"prepublishOnly": "npm run clean && npm run lint && npm run test && npm run build",
		"upgrade": "npm-check --update",
		"test": "echo \"Error: no test specified\" && exit 0",
		"semantic-release": "semantic-release"
		},
		"homepage": "https://github.com/matteobad/focus-within-polyfill#readme",
		"repository": {
		"type": "git",
		"url": "https://github.com/matteobad/focus-within-polyfill"
		},
		"bugs": {
		"url": "https://github.com/matteobad/focus-within-polyfill/issues"
		},
		"keywords": [
		"polyfill",
		"focus",
		"blur",
		"focus-within",
		"pseudo-class",
		"no-jquery",
		"vanilla",
		"vanilla-js"
		],
		"author": "Matteo Badini",
		"license": "MIT",
		"dependencies": {},
		"devDependencies": {
		"@semantic-release/changelog": "^3.0.2",
		"@semantic-release/commit-analyzer": "^6.1.0",
		"@semantic-release/git": "^7.0.8",
		"@semantic-release/npm": "^5.1.4",
		"@semantic-release/release-notes-generator": "^7.1.4",
		"commitizen": "^3.1.1",
		"cz-conventional-changelog": "^2.1.0",
		"eslint": "^5.16.0",
		"husky": "^2.1.0",
		"npm-check": "^5.9.0",
		"rimraf": "^2.6.3",
		"rollup": "^1.10.1",
		"rollup-plugin-eslint": "^5.1.0",
		"rollup-plugin-terser": "^4.0.4",
		"semantic-release": "^15.13.3",
		"standard": "^12.0.1"
		},
		"browserslist": [
		"defaults"
		],
		"config": {
		"commitizen": {
		"path": "cz-conventional-changelog"
		}
		},
		"husky": {
		"hooks": {
		"pre-commit": "npm run lint && npm run test"
		}
		}
		}

README.md

		@@ -44,2 +44,6 @@ # `:focus-within` Pseudo-Class Polyfill

		## Notes

		This polyfill does not support shadow DOM. The goal is to polyfill a feature that is missing in IE and EDGE and since shadow DOM is another feature that [needs polyfilling](https://caniuse.com/#feat=shadowdomv1) in this browser I won't implement such feature, but any PR is well accepted.

		## Browser Support
		@@ -46,0 +50,0 @@

src/focus-within.js

@@ -0,0 +0,0 @@ import { supportsFocusWithin, validClassName } from './utils'

src/utils.js

		@@ -22,3 +22,3 @@ /**
		export function validClassName(className) {
		if (typeof className !== 'string') {
		if (typeof className !== 'string') {
		console.error('focus-within-polyfill:' + className + ' is not a string')
		@@ -25,0 +25,0 @@ return false

yarn.lock

.editorconfig