ESM lib

Author: timea-solid

babel.config.js

@@ -0,0 +1,6 @@
+export default {
+  presets: [
+    ["@babel/preset-env", { targets: { node: "current" } }],
+    "@babel/preset-typescript"
+  ]
+};

eslint.config.js

@@ -1,22 +1,16 @@
-const {
-    defineConfig,
-} = require("eslint/config");
-
-const tsParser = require("@typescript-eslint/parser");
-const typescriptEslint = require("@typescript-eslint/eslint-plugin");
-const js = require("@eslint/js");
-
-const {
-    FlatCompat,
-} = require("@eslint/eslintrc");
+import { defineConfig } from "eslint/config";
+import tsParser from "@typescript-eslint/parser";
+import typescriptEslint from "@typescript-eslint/eslint-plugin";
+import js from "@eslint/js";
+import { FlatCompat } from "@eslint/eslintrc";
 
 const compat = new FlatCompat({
-    baseDirectory: __dirname,
+    baseDirectory: import.meta.dirname,
     recommendedConfig: js.configs.recommended,
     allConfig: js.configs.all
 });
 
-module.exports = defineConfig([{
+export default defineConfig([{
     languageOptions: {
         parser: tsParser,
     },

jest.config.js

@@ -1,10 +1,14 @@
-module.exports = {
-  verbose: true,
-  testEnvironment: 'jsdom',
+/** @type {import("jest").Config} */
+export default {
+  // verbose: true, // Uncomment for detailed test output
+  testEnvironment: "jsdom",
   testEnvironmentOptions: {
-      customExportConditions: ['node']
+    customExportConditions: ["node"],
   },
-  setupFilesAfterEnv: [
-    './test/helpers/setup.ts'
-  ]
-}
+  transform: {
+    "^.+\\.[tj]sx?$": ["babel-jest", { configFile: "./babel.config.js" }],
+  },
+  setupFilesAfterEnv: ["./test/helpers/setup.ts"],
+  testMatch: ["**/__tests__/**/*.ts?(x)", "**/?(*.)+(spec|test).ts?(x)"],
+  roots: ["<rootDir>/src", "<rootDir>/test"],
+};