chore: update ci and test utils

.editorconfig

@@ -0,0 +1,15 @@
+root = true
+
+[*]
+charset = utf-8
+end_of_line = lf
+indent_style = tab
+insert_final_newline = true
+trim_trailing_whitespace = true
+
+[*.md]
+trim_trailing_whitespace = false
+
+[*.{json,md,yml}]
+indent_size = 2
+indent_style = space

.github/workflows/ci.yaml

@@ -0,0 +1,21 @@
+name: Node.js CI
+
+on:
+  push:
+    branches: master
+  pull_request:
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        node-version: [10.x, 12.x, 14.x, 16.x, 17.x]
+    steps:
+      - uses: actions/checkout@v2
+      - name: Use Node.js ${{ matrix.node-version }}
+        uses: actions/setup-node@v2
+        with:
+          node-version: ${{ matrix.node-version }}
+      - run: npm install
+      - run: npm test

.gitignore

@@ -1,3 +1,10 @@
 node_modules
-npm-debug.log
-test/*.result.css
+package-lock.json
+yarn.lock
+.*
+!.editorconfig
+!.gitignore
+!.tape.js
+!.github
+*.log*
+*.result.css

README.md

@@ -112,16 +112,16 @@ grunt.initConfig({
 
 [npm-url]: https://www.npmjs.com/package/postcss-at-else
 [npm-img]: https://img.shields.io/npm/v/postcss-at-else.svg
-[cli-url]: https://travis-ci.org/jonathantneal/postcss-at-else
-[cli-img]: https://img.shields.io/travis/jonathantneal/postcss-at-else.svg
+[cli-url]: https://github.com/csstools/postcss-at-else/actions/workflows/ci.yaml
+[cli-img]: https://github.com/csstools/postcss-at-else/actions/workflows/ci.yaml/badge.svg
 [lic-url]: LICENSE.md
 [lic-image]: https://img.shields.io/npm/l/postcss-at-else.svg
 [log-url]: CHANGELOG.md
 [log-image]: https://img.shields.io/badge/changelog-md-blue.svg
 [git-url]: https://gitter.im/postcss/postcss
 [git-image]: https://img.shields.io/badge/chat-gitter-blue.svg
 
-[@else]: https://github.com/jonathantneal/postcss-at-else
+[@else]: https://github.com/csstools/postcss-at-else
 [PostCSS]: https://github.com/postcss/postcss
 [Gulp PostCSS]: https://github.com/postcss/gulp-postcss
 [Grunt PostCSS]: https://github.com/nDmitry/grunt-postcss

package.json

@@ -4,47 +4,37 @@
   "description": "Use @else inverted media queries in CSS",
   "author": "Jonathan Neal <jonathantneal@hotmail.com>",
   "license": "CC0-1.0",
-  "repository": "jonathantneal/postcss-at-else",
-  "homepage": "https://github.com/jonathantneal/postcss-at-else#readme",
-  "bugs": "https://github.com/jonathantneal/postcss-at-else/issues",
+  "repository": "csstools/postcss-at-else",
+  "homepage": "https://github.com/csstools/postcss-at-else#readme",
+  "bugs": "https://github.com/csstools/postcss-at-else/issues",
   "main": "index.js",
   "files": [
     "index.js"
   ],
   "scripts": {
-    "lint": "echint && eslint index.js && jscs index.js",
-    "prepublish": "npm test",
-    "tape": "postcss-tape --plugin index.js",
-    "test": "npm run lint && postcss-tape"
+    "lint": "eslint . --cache",
+    "pretest": "npm run lint",
+    "test": "postcss-tape",
+    "prepublishOnly": "npm test"
   },
   "engines": {
-    "node": ">=10"
+    "node": "^10 || ^12 || >=14"
   },
   "peerDependencies": {
     "postcss": "^8.0.0"
   },
   "devDependencies": {
-    "echint": "^2.1.0",
-    "echint-config-dev": "1.0.0",
-    "eslint": "^3.12.1",
-    "eslint-config-dev": "1.0.0",
-    "jscs": "^3.0.7",
-    "jscs-config-dev": "1.0.1",
+    "eslint": "^7.32.0",
+    "eslint-config-dev": "2.0.0",
     "postcss": "^8.3.4",
-    "postcss-tape": "^6.0.1 "
-  },
-  "echint": {
-    "extends": "dev"
+    "postcss-tape": "^6.0.1"
   },
   "eslintConfig": {
     "extends": "dev",
     "parserOptions": {
       "sourceType": "module"
     }
   },
-  "jscsConfig": {
-    "preset": "dev"
-  },
   "keywords": [
     "postcss",
     "css",