Update build tooling

.babelrc

@@ -3,7 +3,7 @@
 		"@babel/preset-env"
 	],
 	"plugins": [
-		"@babel/plugin-proposal-class-properties",
+		"@babel/plugin-transform-class-properties",
 		"@babel/plugin-transform-runtime"
 	]
 }

.browserslistrc

@@ -1,2 +1,2 @@
-ie 11
+defaults
 maintained node versions

.eslintrc.json

@@ -4,9 +4,9 @@
 		"plugin:compat/recommended",
 		"ultraq"
 	],
-	"parser": "babel-eslint",
+	"parser": "@babel/eslint-parser",
 	"parserOptions": {
-		"ecmaVersion": 2019
+		"ecmaVersion": 2020
 	},
 	"env": {
 		"browser": true,

.github/workflows/build.yml

@@ -6,27 +6,17 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        node-version: [12.x, 14.x, 16.x]
+        node-version: [18, 20]
     steps:
-      - uses: actions/checkout@v2
-      - uses: actions/setup-node@v2
+      - uses: actions/checkout@v3
+      - uses: actions/setup-node@v3
         with:
           node-version: ${{ matrix.node-version }}
           cache: 'npm'
       - run: npm ci
       - run: npm run lint
       - run: npm run build
       - run: npm test
-      - uses: coverallsapp/github-action@v1.1.2
+      - uses: codecov/codecov-action@v3
         with:
-          github-token: ${{ secrets.github_token }}
-          flag-name: run-node-${{ matrix.node-version }}
-          parallel: true
-  finish:
-    needs: build
-    runs-on: ubuntu-latest
-    steps:
-      - uses: coverallsapp/github-action@v1.1.2
-        with:
-          github-token: ${{ secrets.github_token }}
-          parallel-finished: true
+          directory: coverage/

.gitignore

@@ -3,4 +3,3 @@
 /dist
 /lib
 /node_modules
-npm-debug.log

CHANGELOG.md

@@ -2,6 +2,11 @@
 Changelog
 =========
 
+### 0.13.0
+ - Minimum supported version of Node is now 18
+ - Browser target in `.browserslistrc` file is now `defaults`, so the explicit
+   `ie11` target has been removed and thus IE11 support has been dropped
+
 ### 0.12.0
  - Dropped support for Node 10
  - Use [`Intl.Pluralrules`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Intl/PluralRules)