diff --git a/jest.cjs.config.ts b/jest.cjs.config.ts
new file mode 100644
index 0000000..734df2a
--- /dev/null
+++ b/jest.cjs.config.ts
@@ -0,0 +1,7 @@
+import config from './jest/jest.shared.config'
+
+config.testMatch = [
+  '**/?(*.)+(cjs).+(spec|test).+(ts|tsx|js)',
+]
+
+export default config
diff --git a/jest.config.esm.ts b/jest.config.esm.ts
deleted file mode 100644
index 7e463ce..0000000
--- a/jest.config.esm.ts
+++ /dev/null
@@ -1,9 +0,0 @@
-import config from './jest.config.cjs'
-
-config.globals = {
-  'ts-jest': {
-    useESM: true,
-  },
-}
-
-export default config
diff --git a/jest.esm.config.ts b/jest.esm.config.ts
new file mode 100644
index 0000000..c013a2e
--- /dev/null
+++ b/jest.esm.config.ts
@@ -0,0 +1,12 @@
+import config from './jest/jest.shared.config'
+
+config.testMatch = [
+  '**/?(*.)+(esm).+(spec|test).+(ts|tsx|js)',
+]
+config.globals = {
+  'ts-jest': {
+    useESM: true,
+  },
+}
+
+export default config
diff --git a/jest.config.cjs.ts b/jest/jest.shared.config.ts
similarity index 78%
rename from jest.config.cjs.ts
rename to jest/jest.shared.config.ts
index a441dec..4fc8545 100644
--- a/jest.config.cjs.ts
+++ b/jest/jest.shared.config.ts
@@ -5,10 +5,6 @@ import type { Config } from '@jest/types'
 // Sync object
 const config: Config.InitialOptions = {
   verbose: true,
-  testMatch: [
-    '**/__tests__/**/*.+(ts|tsx|js)',
-    '**/?(*.)+(spec|test).+(ts|tsx|js)',
-  ],
   moduleDirectories: [
     'node_modules',
     'src',
diff --git a/package.json b/package.json
index 5785364..9d5ba2b 100644
--- a/package.json
+++ b/package.json
@@ -1,13 +1,21 @@
 {
 	"name": "@iconify/json",
-	"description": "Iconify icons collection in JSON format",
-	"license": "MIT",
 	"version": "1.1.401",
+	"description": "Iconify icons collection in JSON format",
+	"homepage": "https://iconify.design/icon-sets/",
+	"bugs": "https://github.com/iconify/collections-json/issues",
 	"repository": {
 		"type": "git",
 		"url": "git+ssh://git@github.com/iconify/collections-json.git"
 	},
-	"files": [
+	"license": "MIT",
+	"exports": {
+		".": {
+			"require": "./dist/index.js",
+			"import": "./dist/index.mjs"
+		}
+	},
+ 	"files": [
 		"dist",
 		"json",
 		"lib",
@@ -19,12 +27,10 @@
 	"main": "dist/index.js",
 	"module": "dist/index.mjs",
 	"types": "dist/index.d.ts",
-	"homepage": "https://iconify.design/icon-sets/",
-	"bugs": "https://github.com/iconify/collections-json/issues",
 	"scripts": {
 		"build": "rimraf dist && tsup src/index.ts --format cjs,esm --dts",
-		"test-esm": "yarn build && jest --clearCache && cross-env NODE_OPTIONS=--experimental-vm-modules npx jest --config=jest.config.esm.ts",
-		"test-cjs": "yarn build && jest --clearCache && jest --config=jest.config.cjs.ts"
+		"test-esm": "jest --clearCache && cross-env NODE_OPTIONS=--experimental-vm-modules npx jest --config=jest.esm.config.ts",
+		"test-cjs": "yarn build && jest --clearCache && jest --config=jest.cjs.config.ts"
 	},
 	"dependencies": {
 		"upath": "^2.0.1"
diff --git a/src/index.ts b/src/index.ts
index 7c185ee..20681d5 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -10,7 +10,9 @@
  */
 import { PathLike, promises as fs } from 'fs'
 import { fileURLToPath } from 'url'
-import { dirname, resolve } from 'upath'
+import Upath from 'upath'
+
+const { dirname, resolve } = Upath
 
 /**
  * Icon dimensions.
diff --git a/src/loadCollection.test.ts b/src/loadCollection.cjs.test.ts
similarity index 100%
rename from src/loadCollection.test.ts
rename to src/loadCollection.cjs.test.ts
diff --git a/src/loadCollection.esm.test.ts b/src/loadCollection.esm.test.ts
new file mode 100644
index 0000000..4a7ced9
--- /dev/null
+++ b/src/loadCollection.esm.test.ts
@@ -0,0 +1,27 @@
+import { IconifyMetaDataCollection, lookupCollection, lookupCollections } from '.'
+
+let collections: IconifyMetaDataCollection
+
+describe('lookupCollection and lookupCollections', () => {
+  beforeAll(() => {
+    return lookupCollections().then((c) => {
+      collections = c
+      return Promise.resolve(c)
+    })
+  })
+  test('lookupCollections has data', () => {
+    expect(collections ? Object.keys(collections).length : 0).toBeGreaterThan(0)
+  })
+  test('mdi collection has prefix mdi', async() => {
+    const collection = await lookupCollection('mdi')
+    expect(collection.prefix).toBe('mdi')
+  })
+  test('websymbol collection has prefix websymbol', async() => {
+    const collection = await lookupCollection('websymbol')
+    expect(collection.prefix).toBe('websymbol')
+  })
+  test('fa collection has prefix fa', async() => {
+    const collection = await lookupCollection('fa')
+    expect(collection.prefix).toBe('fa')
+  })
+})
diff --git a/src/locate.test.ts b/src/locate.cjs.test.ts
similarity index 100%
rename from src/locate.test.ts
rename to src/locate.cjs.test.ts
diff --git a/src/locate.esm.test.ts b/src/locate.esm.test.ts
new file mode 100644
index 0000000..b63769c
--- /dev/null
+++ b/src/locate.esm.test.ts
@@ -0,0 +1,10 @@
+import { resolve } from 'path'
+import { locate } from '.'
+
+const cwd = process.cwd()
+
+test('mdi resolves the json collection', () => {
+  const received = locate('mdi') as string
+  const expected = resolve(cwd, 'json', 'mdi.json').replace(/\\/g, '/')
+  expect(received).toBe(expected)
+})
diff --git a/tsconfig.json b/tsconfig.json
index b8a4767..685e220 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -1,7 +1,7 @@
 {
   "compilerOptions": {
     "baseUrl": ".",
-    "module": "ESNext",
+    "module": "esnext",
     "target": "ESNext",
     "lib": ["ESNext"],
     "esModuleInterop": true,