diff --git a/babel.config.cjs b/babel.config.js
similarity index 96%
rename from babel.config.cjs
rename to babel.config.js
index d51c65428..1ead4321b 100644
--- a/babel.config.cjs
+++ b/babel.config.js
@@ -1,4 +1,4 @@
-const svgoConfig = require('./svgo-config.cjs');
+const svgoConfig = require('./svgo-config.js');
 
 const isDevelopment = process.env.TYPE === 'development';
 
diff --git a/config/cssTransform.js b/config/cssTransform.mjs
similarity index 100%
rename from config/cssTransform.js
rename to config/cssTransform.mjs
diff --git a/config/paths.js b/config/paths.mjs
similarity index 100%
rename from config/paths.js
rename to config/paths.mjs
diff --git a/config/polyfill.js b/config/polyfill.mjs
similarity index 100%
rename from config/polyfill.js
rename to config/polyfill.mjs
diff --git a/config/webpack.config.dev.build.js b/config/webpack.config.dev.build.mjs
similarity index 89%
rename from config/webpack.config.dev.build.js
rename to config/webpack.config.dev.build.mjs
index fd4c07939..83705c991 100644
--- a/config/webpack.config.dev.build.js
+++ b/config/webpack.config.dev.build.mjs
@@ -1,8 +1,8 @@
 import webpack from 'webpack';
 import { merge as webpackMerge } from 'webpack-merge';
 import MiniCssExtractPlugin from 'mini-css-extract-plugin';
-import * as commonConfig from './webpack.config.js';
-import { default as paths } from './paths.js';
+import * as commonConfig from './webpack.config.mjs';
+import { default as paths } from './paths.mjs';
 
 // This is the development configuration.
 // It is focused on developer experience and fast rebuilds.
@@ -62,12 +62,6 @@ export default webpackMerge(commonConfig.default, {
         options: {
           cacheDirectory: true,
         },
-        resolve: {
-          // https://webpack.js.org/configuration/module/#resolvefullyspecified
-          // temp fix for migrating to esm
-          // needs to be reviewed and discussed later
-          fullySpecified: false,
-        },
       },
       {
         test: /\.css$/i,
diff --git a/config/webpack.config.dev.js b/config/webpack.config.dev.mjs
similarity index 92%
rename from config/webpack.config.dev.js
rename to config/webpack.config.dev.mjs
index 2c4dd49df..080cf958c 100644
--- a/config/webpack.config.dev.js
+++ b/config/webpack.config.dev.mjs
@@ -5,8 +5,8 @@ import webpack from 'webpack';
 import { merge as webpackMerge } from 'webpack-merge';
 import HtmlWebpackPlugin from 'html-webpack-plugin';
 import CaseSensitivePathsPlugin from 'case-sensitive-paths-webpack-plugin';
-import * as commonConfig from './webpack.config.js';
-import { default as paths } from './paths.js';
+import * as commonConfig from './webpack.config.mjs';
+import { default as paths } from './paths.mjs';
 
 // This is the development configuration.
 // It is focused on developer experience and fast rebuilds.
@@ -52,12 +52,6 @@ export default webpackMerge(commonConfig.default, {
             },
           },
         ],
-        resolve: {
-          // https://webpack.js.org/configuration/module/#resolvefullyspecified
-          // temp fix for migrating to esm
-          // needs to be reviewed and discussed later
-          fullySpecified: false,
-        },
       },
       {
         test: /\.(eot|ttf|woff|woff2)$/,
diff --git a/config/webpack.config.dist.js b/config/webpack.config.dist.mjs
similarity index 93%
rename from config/webpack.config.dist.js
rename to config/webpack.config.dist.mjs
index 3d94dab6b..a1b870a05 100644
--- a/config/webpack.config.dist.js
+++ b/config/webpack.config.dist.mjs
@@ -5,8 +5,8 @@ import { merge as webpackMerge } from 'webpack-merge';
 import MiniCssExtractPlugin from 'mini-css-extract-plugin';
 import TerserPlugin from 'terser-webpack-plugin';
 import CssMinimizerPlugin from 'css-minimizer-webpack-plugin';
-import * as commonConfig from './webpack.config.js';
-import { default as paths } from './paths.js';
+import * as commonConfig from './webpack.config.mjs';
+import { default as paths } from './paths.mjs';
 
 // Assert this just to be safe.
 if (process.env.NODE_ENV !== 'dist') {
@@ -83,12 +83,6 @@ export default webpackMerge(commonConfig.default, {
         options: {
           cacheDirectory: true,
         },
-        resolve: {
-          // https://webpack.js.org/configuration/module/#resolvefullyspecified
-          // temp fix for migrating to esm
-          // needs to be reviewed and discussed later
-          fullySpecified: false,
-        },
       },
       {
         test: /\.css$/i,
diff --git a/config/webpack.config.js b/config/webpack.config.mjs
similarity index 96%
rename from config/webpack.config.js
rename to config/webpack.config.mjs
index a2ad2fee2..2c3d4462e 100644
--- a/config/webpack.config.js
+++ b/config/webpack.config.mjs
@@ -1,5 +1,5 @@
 import path from 'path';
-import { default as paths } from './paths.js';
+import { default as paths } from './paths.mjs';
 import { createRequire } from 'module';
 const require = createRequire(import.meta.url);
 const buffer = require.resolve('buffer/');
diff --git a/config/webpack.config.prod.js b/config/webpack.config.prod.mjs
similarity index 94%
rename from config/webpack.config.prod.js
rename to config/webpack.config.prod.mjs
index 13f919a88..fa8a872a0 100644
--- a/config/webpack.config.prod.js
+++ b/config/webpack.config.prod.mjs
@@ -6,8 +6,8 @@ import MiniCssExtractPlugin from 'mini-css-extract-plugin';
 import HtmlWebpackPlugin from 'html-webpack-plugin';
 import TerserPlugin from 'terser-webpack-plugin';
 import CssMinimizerPlugin from 'css-minimizer-webpack-plugin';
-import * as commonConfig from './webpack.config.js';
-import { default as paths } from './paths.js';
+import * as commonConfig from './webpack.config.mjs';
+import { default as paths } from './paths.mjs';
 
 // Assert this just to be safe.
 if (process.env.NODE_ENV !== 'production') {
@@ -86,12 +86,6 @@ export default webpackMerge(commonConfig.default, {
         test: /\.(js|jsx)$/,
         include: [paths.appSrc, paths.appDemo],
         loader: 'babel-loader',
-        resolve: {
-          // https://webpack.js.org/configuration/module/#resolvefullyspecified
-          // temp fix for migrating to esm
-          // needs to be reviewed and discussed later
-          fullySpecified: false,
-        },
       },
       {
         test: /\.css$/i,
diff --git a/config/webpackDevServer.config.js b/config/webpackDevServer.config.mjs
similarity index 94%
rename from config/webpackDevServer.config.js
rename to config/webpackDevServer.config.mjs
index c092b82e2..33044999d 100644
--- a/config/webpackDevServer.config.js
+++ b/config/webpackDevServer.config.mjs
@@ -1,5 +1,5 @@
-import { default as config } from './webpack.config.dev.js';
-import { default as paths } from './paths.js';
+import { default as config } from './webpack.config.dev.mjs';
+import { default as paths } from './paths.mjs';
 
 const protocol = process.env.HTTPS === 'true' ? 'https' : 'http';
 const host = process.env.HOST || '0.0.0.0';
diff --git a/jest.config.cjs b/jest.config.js
similarity index 90%
rename from jest.config.cjs
rename to jest.config.js
index 424cf57f1..f36a6ada4 100644
--- a/jest.config.cjs
+++ b/jest.config.js
@@ -3,7 +3,7 @@ module.exports = {
   moduleFileExtensions: ['js', 'jsx', 'json'],
   transform: {
     '^.+\\.(js|jsx)?$': 'babel-jest',
-    '^.+\\.css$': '<rootDir>/config/cssTransform.js',
+    '^.+\\.css$': '<rootDir>/config/cssTransform.mjs',
   },
   transformIgnorePatterns: ['[/\\\\]node_modules[/\\\\].+\\.(js|jsx|mjs|cjs|ts|tsx)$'],
   clearMocks: true,
diff --git a/package.json b/package.json
index 59311b98f..362c6c8eb 100644
--- a/package.json
+++ b/package.json
@@ -5,7 +5,6 @@
   "main": "lib/index.js",
   "module": "es/index.js",
   "types": "es/index.d.ts",
-  "type": "module",
   "files": [
     "dist",
     "src/styles",
@@ -14,16 +13,16 @@
   ],
   "license": "MIT",
   "scripts": {
-    "generate-docs": "node ./scripts/generateDocs.js",
+    "generate-docs": "node ./scripts/generateDocs.mjs",
     "clean": "rimraf dist/* docs/* lib/* es/*",
-    "generate-types": "node ./scripts/generate-types/generateTypes.js",
+    "generate-types": "node ./scripts/generate-types/generateTypes.mjs",
     "copy-types": "npm run generate-types -- -c",
     "type-check": "npx -p typescript tsc --allowSyntheticDefaultImports",
     "deps": "ADBLOCK=true DISABLE_OPENCOLLECTIVE=true npm ci",
-    "dist:prod": "cross-env NODE_ENV=dist node ./scripts/build.js",
-    "dist:lib": "cross-env NODE_ENV=cjs node ./scripts/babel-build.js",
-    "dist:es": "cross-env NODE_ENV=esm node ./scripts/babel-build.js",
-    "dist:demo": "cross-env NODE_ENV=production DEMO_ASSETS=true node ./scripts/build.js",
+    "dist:prod": "cross-env NODE_ENV=dist node ./scripts/build.mjs",
+    "dist:lib": "cross-env NODE_ENV=cjs node ./scripts/babel-build.mjs",
+    "dist:es": "cross-env NODE_ENV=esm node ./scripts/babel-build.mjs",
+    "dist:demo": "cross-env NODE_ENV=production DEMO_ASSETS=true node ./scripts/build.mjs",
     "dist": "npm run clean && npm run copy-types && npm run dist:lib && npm run dist:es && npm run dist:prod && npm run generate-docs && npm run dist:demo",
     "lint:eslint": "eslint --ext .jsx,.js,.ts ./src && eslint --ext .jsx,.js ./www",
     "lint:stylelint": "stylelint '{src,www}/**/*.css'",
@@ -31,13 +30,13 @@
     "format": "prettier '{src,www,config}/**/*.{js,json,jsx,md,mdx,css}' --write",
     "lint": "npm run lint:eslint && npm run lint:prettier && npm run lint:stylelint",
     "prettier": "prettier \"{src,www,config}/**/*.{js,json,jsx,md,mdx,css}\" --write",
-    "svgo": "svgo --recursive --multipass --folder=src --config=svgo-config.cjs",
+    "svgo": "svgo --recursive --multipass --folder=src --config=svgo-config.js",
     "postversion": "git push -u origin $(git rev-parse --abbrev-ref HEAD) --follow-tags && npm publish && echo '…released.'",
     "preversion": "echo 'Releasing…' && ADBLOCK=true DISABLE_OPENCOLLECTIVE=true npm ci",
     "release:major": "npm version major -m 'build: release major version %s'",
     "release:minor": "npm version minor -m 'build: release minor version %s'",
     "release:patch": "npm version patch -m 'build: release patch version %s'",
-    "start": "npm run generate-docs && node scripts/start.js",
+    "start": "npm run generate-docs && node scripts/start.mjs",
     "test": "jest --watch",
     "coverage": "jest --colors --coverage",
     "version": "echo '…generating dist…' && npm run dist",
diff --git a/postcss.config.cjs b/postcss.config.js
similarity index 100%
rename from postcss.config.cjs
rename to postcss.config.js
diff --git a/scripts/babel-build.js b/scripts/babel-build.mjs
similarity index 100%
rename from scripts/babel-build.js
rename to scripts/babel-build.mjs
diff --git a/scripts/build.js b/scripts/build.mjs
similarity index 96%
rename from scripts/build.js
rename to scripts/build.mjs
index 1176586db..5d4bfd5c8 100644
--- a/scripts/build.js
+++ b/scripts/build.mjs
@@ -10,18 +10,18 @@ import fs from 'fs';
 import path from 'path';
 import webpack from 'webpack';
 
-import paths from '../config/paths.js';
+import paths from '../config/paths.mjs';
 import checkRequiredFiles from 'react-dev-utils/checkRequiredFiles.js';
 import formatWebpackMessages from 'react-dev-utils/formatWebpackMessages.js';
 import FileSizeReporter from 'react-dev-utils/FileSizeReporter.js';
 import printBuildError from 'react-dev-utils/printBuildError.js';
 
-let configFile = '../config/webpack.config.dev.build.js';
+let configFile = '../config/webpack.config.dev.build.mjs';
 if (process.env.NODE_ENV === 'dist') {
-  configFile = '../config/webpack.config.dist.js';
+  configFile = '../config/webpack.config.dist.mjs';
 }
 if (process.env.NODE_ENV === 'production') {
-  configFile = '../config/webpack.config.prod.js';
+  configFile = '../config/webpack.config.prod.mjs';
 }
 const config = (await import(configFile)).default;
 
diff --git a/scripts/generate-types/babel-plugin-proptype-vars.js b/scripts/generate-types/babel-plugin-proptype-vars.mjs
similarity index 100%
rename from scripts/generate-types/babel-plugin-proptype-vars.js
rename to scripts/generate-types/babel-plugin-proptype-vars.mjs
diff --git a/scripts/generate-types/copyTypes.js b/scripts/generate-types/copyTypes.mjs
similarity index 96%
rename from scripts/generate-types/copyTypes.js
rename to scripts/generate-types/copyTypes.mjs
index 5e89845b1..a0bbc01fd 100644
--- a/scripts/generate-types/copyTypes.js
+++ b/scripts/generate-types/copyTypes.mjs
@@ -1,7 +1,7 @@
 import fs from 'node:fs/promises';
 import globPkg from 'glob';
 import chalk from 'chalk';
-import paths from '../../config/paths.js';
+import paths from '../../config/paths.mjs';
 
 const { glob } = globPkg;
 
diff --git a/scripts/generate-types/generateTypes.js b/scripts/generate-types/generateTypes.mjs
similarity index 95%
rename from scripts/generate-types/generateTypes.js
rename to scripts/generate-types/generateTypes.mjs
index 5ebafc348..55ed994ff 100644
--- a/scripts/generate-types/generateTypes.js
+++ b/scripts/generate-types/generateTypes.mjs
@@ -9,10 +9,10 @@ import chalk from 'chalk';
 import fs from 'node:fs/promises';
 import path from 'node:path';
 import { fileURLToPath } from 'node:url';
-import paths from '../../config/paths.js';
-import parsePropTypesVariables from './babel-plugin-proptype-vars.js';
-import copyTypes from './copyTypes.js';
-import typesPostFixes from './typesPostFixes.js';
+import paths from '../../config/paths.mjs';
+import parsePropTypesVariables from './babel-plugin-proptype-vars.mjs';
+import copyTypes from './copyTypes.mjs';
+import typesPostFixes from './typesPostFixes.mjs';
 
 const { glob } = globPkg;
 
@@ -128,7 +128,6 @@ async function generateTypeDefs() {
         console.log(chalk.green.bold(`Generated type defs for ${component.componentName}`));
 
         const output = typesPostFixes(component.componentName, result);
-        // const pkg = await import('../../package.json', { assert: { type: 'json' } });
         const pkg = JSON.parse(await fs.readFile(path.resolve(__dirname, '../../package.json')));
         const prettifiedOutput = prettier.format(output, { parser: 'typescript', ...pkg.prettier });
 
diff --git a/scripts/generate-types/typesPostFixes.js b/scripts/generate-types/typesPostFixes.mjs
similarity index 100%
rename from scripts/generate-types/typesPostFixes.js
rename to scripts/generate-types/typesPostFixes.mjs
diff --git a/scripts/generateDocs.js b/scripts/generateDocs.mjs
similarity index 100%
rename from scripts/generateDocs.js
rename to scripts/generateDocs.mjs
diff --git a/scripts/start.js b/scripts/start.mjs
similarity index 96%
rename from scripts/start.js
rename to scripts/start.mjs
index e78b72575..1c580a9fa 100644
--- a/scripts/start.js
+++ b/scripts/start.mjs
@@ -6,9 +6,9 @@ import clearConsole from 'react-dev-utils/clearConsole.js';
 import checkRequiredFiles from 'react-dev-utils/checkRequiredFiles.js';
 import { choosePort, createCompiler, prepareProxy, prepareUrls } from 'react-dev-utils/WebpackDevServerUtils.js';
 import openBrowser from 'react-dev-utils/openBrowser.js';
-import paths from '../config/paths.js';
-import config from '../config/webpack.config.dev.js';
-import createDevServerConfig from '../config/webpackDevServer.config.js';
+import paths from '../config/paths.mjs';
+import config from '../config/webpack.config.dev.mjs';
+import createDevServerConfig from '../config/webpackDevServer.config.mjs';
 
 process.env.NODE_ENV = 'development';
 
diff --git a/src/index.js b/src/index.js
index 19031c145..75174b628 100644
--- a/src/index.js
+++ b/src/index.js
@@ -2,76 +2,76 @@ import './styles/bootstrap-custom.css';
 
 import { registerLocale } from 'react-datepicker';
 
-import Accordion from './components/Accordion/index.jsx';
-import ActionPanel from './components/ActionPanel/index.jsx';
-import Alert from './components/Alert/index.jsx';
-import AlertInput from './components/AlertInput/index.jsx';
-import Anchor from './components/Anchor/index.jsx';
-import Avatar from './components/Avatar/index.jsx';
-import BorderedWell from './components/BorderedWell/index.jsx';
-import Breadcrumb from './components/Breadcrumb/index.jsx';
-import Button from './components/Button/index.jsx';
-import ButtonGroup from './components/ButtonGroup/index.jsx';
-import Card from './components/Card/index.jsx';
-import Carousel from './components/Carousel/index.jsx';
-import Checkbox from './components/Checkbox/index.jsx';
-import CheckboxGroup from './components/CheckboxGroup/index.jsx';
-import ConfirmModal from './components/ConfirmModal/index.jsx';
-import CountBadge from './components/CountBadge/index.jsx';
-import DatePicker from './components/DatePicker/index.jsx';
-import Empty from './components/Empty/index.jsx';
-import fastStatelessWrapper from './components/fastStatelessWrapper/index.jsx';
-import FilePicker from './components/FilePicker/index.jsx';
-import FlexibleSpacer from './components/FlexibleSpacer/index.jsx';
-import FormGroup from './components/FormGroup/index.jsx';
-import Grid from './components/Grid/index.jsx';
-import GridCell from './components/Grid/Cell/index.jsx';
-import GridRow from './components/Grid/Row/index.jsx';
-import HelpIconPopover from './components/HelpIconPopover/index.jsx';
-import HoverDropdownMenu from './components/HoverDropdownMenu/index.jsx';
-import ImageCropper from './components/ImageCropper/index.jsx';
-import InformationBox from './components/InformationBox/index.jsx';
-import ListPicker from './components/ListPicker/index.jsx';
-import ListPickerPure from './components/ListPickerPure/index.jsx';
-import Nav, { NavItem } from './components/Navigation/index.jsx';
-import OverlayLoader from './components/OverlayLoader/index.jsx';
-import PagedGrid from './components/PagedGrid/index.jsx';
-import PageTitle from './components/PageTitle/index.jsx';
-import Pagination from './components/Pagination/index.jsx';
-import Panel from './components/Panel/index.jsx';
-import Paragraph from './components/Paragraph/index.jsx';
-import Pill from './components/Pill/index.jsx';
-import Popover from './components/Popover/index.jsx';
-import PrettyDiff from './components/PrettyDiff/index.jsx';
-import Radio from './components/Radio/index.jsx';
-import RadioGroup from './components/RadioGroup/index.jsx';
-import RichTextEditor from './components/RichTextEditor/index.jsx';
-import Search from './components/Search/index.jsx';
-import SearchableCheckList from './components/SearchableCheckList/index.jsx';
-import Select from './components/Select/index.jsx';
-import Skeleton from './components/Skeleton/index.jsx';
-import Slicey from './components/Slicey/index.jsx';
-import Spinner from './components/Spinner/index.jsx';
-import SplitPane from './components/SplitPane/index.jsx';
-import Statistic from './components/Statistic/index.jsx';
-import StatusPill from './components/StatusPill/index.jsx';
-import SvgSymbol from './components/SvgSymbol/index.jsx';
-import Switch from './components/Switch/index.jsx';
-import Tab from './components/Tab/index.jsx';
-import Tabs from './components/Tabs/index.jsx';
-import Tag from './components/Tag/index.jsx';
-import Textarea from './components/Textarea/index.jsx';
-import TextEllipsis from './components/TextEllipsis/index.jsx';
-import Tile from './components/Tile/index.jsx';
-import TileGrid from './components/TileGrid/index.jsx';
-import Toast from './components/Toast/index.jsx';
-import Totals from './components/Totals/index.jsx';
-import TreePickerSimplePure from './components/TreePicker/index.jsx';
-import TreePickerGrid from './components/TreePicker/Grid/index.jsx';
-import TreePickerNav from './components/TreePicker/Nav/index.jsx';
-import TreePickerNode from './components/TreePicker/Node/index.jsx';
-import UserListPicker from './components/UserListPicker/index.jsx';
-import VerticalNav from './components/VerticalNavigation/index.jsx';
+import Accordion from './components/Accordion';
+import ActionPanel from './components/ActionPanel';
+import Alert from './components/Alert';
+import AlertInput from './components/AlertInput';
+import Anchor from './components/Anchor';
+import Avatar from './components/Avatar';
+import BorderedWell from './components/BorderedWell';
+import Breadcrumb from './components/Breadcrumb';
+import Button from './components/Button';
+import ButtonGroup from './components/ButtonGroup';
+import Card from './components/Card';
+import Carousel from './components/Carousel';
+import Checkbox from './components/Checkbox';
+import CheckboxGroup from './components/CheckboxGroup';
+import ConfirmModal from './components/ConfirmModal';
+import CountBadge from './components/CountBadge';
+import DatePicker from './components/DatePicker';
+import Empty from './components/Empty';
+import fastStatelessWrapper from './components/fastStatelessWrapper';
+import FilePicker from './components/FilePicker';
+import FlexibleSpacer from './components/FlexibleSpacer';
+import FormGroup from './components/FormGroup';
+import Grid from './components/Grid';
+import GridCell from './components/Grid/Cell';
+import GridRow from './components/Grid/Row';
+import HelpIconPopover from './components/HelpIconPopover';
+import HoverDropdownMenu from './components/HoverDropdownMenu';
+import ImageCropper from './components/ImageCropper';
+import InformationBox from './components/InformationBox';
+import ListPicker from './components/ListPicker';
+import ListPickerPure from './components/ListPickerPure';
+import Nav, { NavItem } from './components/Navigation';
+import OverlayLoader from './components/OverlayLoader';
+import PagedGrid from './components/PagedGrid';
+import PageTitle from './components/PageTitle';
+import Pagination from './components/Pagination';
+import Panel from './components/Panel';
+import Paragraph from './components/Paragraph';
+import Pill from './components/Pill';
+import Popover from './components/Popover';
+import PrettyDiff from './components/PrettyDiff';
+import Radio from './components/Radio';
+import RadioGroup from './components/RadioGroup';
+import RichTextEditor from './components/RichTextEditor';
+import Search from './components/Search';
+import SearchableCheckList from './components/SearchableCheckList';
+import Select from './components/Select';
+import Skeleton from './components/Skeleton';
+import Slicey from './components/Slicey';
+import Spinner from './components/Spinner';
+import SplitPane from './components/SplitPane';
+import Statistic from './components/Statistic';
+import StatusPill from './components/StatusPill';
+import SvgSymbol from './components/SvgSymbol';
+import Switch from './components/Switch';
+import Tab from './components/Tab';
+import Tabs from './components/Tabs';
+import Tag from './components/Tag';
+import Textarea from './components/Textarea';
+import TextEllipsis from './components/TextEllipsis';
+import Tile from './components/Tile';
+import TileGrid from './components/TileGrid';
+import Toast from './components/Toast';
+import Totals from './components/Totals';
+import TreePickerSimplePure from './components/TreePicker';
+import TreePickerGrid from './components/TreePicker/Grid';
+import TreePickerNav from './components/TreePicker/Nav';
+import TreePickerNode from './components/TreePicker/Node';
+import UserListPicker from './components/UserListPicker';
+import VerticalNav from './components/VerticalNavigation';
 
 export {
   Accordion,
diff --git a/svgo-config.cjs b/svgo-config.js
similarity index 100%
rename from svgo-config.cjs
rename to svgo-config.js