add eslint

.editorconfig

@@ -5,5 +5,4 @@ charset = utf-8
 indent_size = 4
 indent_style = space
 insert_final_newline = false
-max_line_length = 180
 tab_width = 4

.eslintrc.json

@@ -0,0 +1,63 @@
+{
+    "env": {
+        "browser": true,
+        "es2021": true
+    },
+    "rules": {
+        "indent": [
+            "error",
+            4,
+            {
+                "SwitchCase": 1
+            }
+        ],
+        "linebreak-style": [
+            "error",
+            "unix"
+        ],
+        "quotes": "off",
+        "semi": [
+            "error",
+            "always"
+        ],
+        "curly": [
+            "error",
+            "all"
+        ],
+        "brace-style": [
+            "error",
+            "1tbs"
+        ],
+        "space-before-blocks": "error",
+        "space-before-function-paren": [
+            "error",
+            {
+                "anonymous": "always",
+                "named": "never",
+                "asyncArrow": "always"
+            }
+        ],
+        "space-in-parens": "error",
+        "space-infix-ops": "error",
+        "space-unary-ops": "error",
+        "keyword-spacing": "error",
+        "no-irregular-whitespace": "error",
+        "no-trailing-spaces": "error",
+        "semi-spacing": "error",
+        "no-mixed-spaces-and-tabs": "error",
+        "no-multi-spaces": "error",
+        "prefer-const": [
+            "error",
+            {
+                "destructuring": "all"
+            }
+        ],
+        // The vanilla code already has over 100 console.logs, but maybe we can enable this in master and delete them there
+        "no-console": "off",
+        "no-debugger": "error",
+        "eol-last": [
+            "error",
+            "never"
+        ]
+    }
+}

.gitignore

@@ -7,5 +7,10 @@
 !/src/**
 !.gitignore
 !CODEOWNERS
+!package.json
+!package-lock.json
+!.editorconfig
+!.eslintrc.json
 .DS_Store
+node_modules
 /src/sound/.cache

.vscode/extensions.json

@@ -0,0 +1,5 @@
+{
+    "recommendations": [
+        "dbaeumer.vscode-eslint"
+    ]
+}

.vscode/settings.json

@@ -0,0 +1,5 @@
+{
+    "editor.codeActionsOnSave": {
+        "source.fixAll.eslint": true
+    }
+}