Lint all the things

eslint.config.mjs

@@ -1,10 +1,14 @@
 import globals from "globals";
 import pluginJs from "@eslint/js";
 
-
-/** @type {import('eslint').Linter.Config[]} */
+/** @type {import("eslint").Linter.Config[]} */
 export default [
-  {files: ["**/*.js"], languageOptions: {sourceType: "commonjs"}},
-  {languageOptions: { globals: globals.node }},
-  pluginJs.configs.recommended,
+  {
+    ignores: ["client/**", "_reference/**", "firebase/**", "node_modules/**", "dist/**", "build/**", "dev-dist/**"]
+  },
+  { files: ["**/*.js"], languageOptions: { sourceType: "commonjs" } },
+  { files: ["**/*.test.js"], languageOptions: { sourceType: "module" } },
+
+  { languageOptions: { globals: globals.node } },
+  pluginJs.configs.recommended
 ];