Chore: Apply linting to all JavaScript/Vue files with eslint & prettier

eslint.config.js

@@ -0,0 +1,34 @@
+import eslintConfigPrettier from "eslint-config-prettier/flat";
+import neostandard, { resolveIgnoresFromGitignore } from "neostandard";
+import vue from "eslint-plugin-vue";
+
+export default [
+	/* Baseline JS rules, provided by Neostandard */
+	...neostandard({
+		/* Allows references to browser APIs like `document` */
+		env: ["browser"],
+
+		/* We rely on .gitignore to avoid running against dist / dependency files */
+		ignores: resolveIgnoresFromGitignore(),
+
+		/* Disables a range of style-related rules, as we use Prettier for that */
+		noStyle: true,
+
+		/* Ensures we only lint JS and Vue files */
+		files: ["**/*.js", "**/*.vue"],
+	}),
+
+	/* Vue-specific rules */
+	...vue.configs["flat/recommended"],
+
+	/* Prettier is responsible for formatting, so this disables any conflicting rules */
+	eslintConfigPrettier,
+
+	/* Our custom rules */
+	{
+		rules: {
+			/* We prefer arrow functions for tidiness and consistency */
+			"prefer-arrow-callback": "error",
+		},
+	},
+];