chore: upgrade things

.editorconfig

@@ -0,0 +1,10 @@
+# https://editorconfig.org
+root = true
+
+[*]
+indent_style = space
+indent_size = 2
+end_of_line = lf
+charset = utf-8
+trim_trailing_whitespace = true
+insert_final_newline = true

.eslintignore

@@ -0,0 +1 @@
+dist/*

.eslintrc.yml

@@ -1,6 +1,6 @@
 extends:
   - chartjs
-  - plugin:es/no-new-in-es2019
+  - plugin:es/restrict-to-es2018
 
 env:
   es6: true
@@ -18,7 +18,7 @@ globals:
   waitForResize: true
 
 parserOptions:
-  ecmaVersion: 2018
+  ecmaVersion: 2022
   sourceType: module
   ecmaFeatures:
     impliedStrict: true
@@ -33,6 +33,8 @@ rules:
   max-statements: ["warn", 30]
   no-empty-function: "off"
   no-use-before-define: ["error", { "functions": false }]
+  no-var: "error"
+  prefer-const: "error"
   # disable everything, except Rest/Spread Properties in ES2018
   es/no-async-iteration: "error"
   es/no-malformed-template-literals: "error"

.github/workflows/ci.yml

@@ -12,10 +12,10 @@ jobs:
   test:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
-      - uses: actions/setup-node@v1
+      - uses: actions/checkout@v3
+      - uses: actions/setup-node@v3
         with:
-          node-version: 14
+          node-version: 18
       - name: Setup and build
         run: |
           npm ci

.github/workflows/publish-npm.yml

@@ -8,10 +8,10 @@ jobs:
   publish-npm:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
-      - uses: actions/setup-node@v1
+      - uses: actions/checkout@v3
+      - uses: actions/setup-node@v3
         with:
-          node-version: 14
+          node-version: 18
           registry-url: https://registry.npmjs.org/
       - name: Setup and build
         run: |