diff --git a/src/index.mjs b/src/index.mjs
index 6d1ccef..90dd431 100644
--- a/src/index.mjs
+++ b/src/index.mjs
@@ -1,20 +1,6 @@
+import response from './lib/response';
+
 const regex = /^(.*?):[^\S\n]*([\s\S]*?)$/gm;
-const response = (request, headers) => ({
-	ok: (request.status/100|0) == 2,		// 200-299
-	statusText: request.statusText,
-	status: request.status,
-	url: request.responseURL,
-	text: () => Promise.resolve(request.responseText),
-	json: () => Promise.resolve(JSON.parse(request.responseText)),
-	blob: () => Promise.resolve(new Blob([request.response])),
-	clone: () => response(request, headers),
-	headers: {
-		keys: () => headers.keys,
-		entries: () => headers.all,
-		get: n => headers.raw[n.toLowerCase()],
-		has: n => n.toLowerCase() in headers.raw
-	}
-});
 
 export default function(url, options) {
 	options = options || {};
@@ -44,5 +30,3 @@ export default function(url, options) {
 		request.send(options.body || null);
 	});
 }
-
-export { response };
diff --git a/src/lib/response.mjs b/src/lib/response.mjs
new file mode 100644
index 0000000..48c4cc6
--- /dev/null
+++ b/src/lib/response.mjs
@@ -0,0 +1,18 @@
+export default function response (request, headers) {
+	return {
+		ok: (request.status/100|0) == 2,		// 200-299
+		statusText: request.statusText,
+		status: request.status,
+		url: request.responseURL,
+		text: () => Promise.resolve(request.responseText),
+		json: () => Promise.resolve(JSON.parse(request.responseText)),
+		blob: () => Promise.resolve(new Blob([request.response])),
+		clone: () => response(request, headers),
+		headers: {
+			keys: () => headers.keys,
+			entries: () => headers.all,
+			get: n => headers.raw[n.toLowerCase()],
+			has: n => n.toLowerCase() in headers.raw
+		}
+	};
+}
diff --git a/test/index.js b/test/index.js
index 0336596..3a9e598 100644
--- a/test/index.js
+++ b/test/index.js
@@ -1,4 +1,4 @@
-import fetch, { response } from '../src/index.mjs';
+import fetch from '../src/index.mjs';
 import fetchDist from '..';
 
 describe('unfetch', () => {
@@ -81,33 +81,4 @@ describe('unfetch', () => {
 			return p;
 		});
 	});
-
-	describe('response()', () => {
-		it('returns text()', () => response({ responseText: 'A passing test.' })
-			.text()
-			.then((text) => expect(text).toBe('A passing test.'))
-		);
-
-		it('returns blob()', () => response({ response: 'A passing test.' })
-			.blob()
-			.then((text) => expect(text.toString()).toBe(new Blob(['A passing test.']).toString()))
-		);
-
-		it('returns headers', () => {
-			const all = [['x-foo', 'bar'], ['x-baz', 'boo']];
-			const result = response({}, { all }).headers.entries();
-			expect(result).toEqual(all);
-		});
-
-		it('returns header keys', () => {
-			const result = response({}, { keys: ['x-foo'] }).headers.keys();
-			expect(result).toEqual(['x-foo']);
-		});
-
-		it('returns headers has', () => {
-			const raw = { 'x-foo': 'bar', 'x-baz': 'boo' };
-			const test = response({}, { raw }).headers;
-			expect(test.has('x-foo')).toBe(true);
-		});
-	});
 });
diff --git a/test/lib/response.js b/test/lib/response.js
new file mode 100644
index 0000000..471b7d3
--- /dev/null
+++ b/test/lib/response.js
@@ -0,0 +1,30 @@
+import response from '../../src/lib/response.mjs';
+
+describe('response()', () => {
+	it('returns text()', () => response({ responseText: 'A passing test.' })
+		.text()
+		.then((text) => expect(text).toBe('A passing test.'))
+	);
+
+	it('returns blob()', () => response({ response: 'A passing test.' })
+		.blob()
+		.then((text) => expect(text.toString()).toBe(new Blob(['A passing test.']).toString()))
+	);
+
+	it('returns headers', () => {
+		const all = [['x-foo', 'bar'], ['x-baz', 'boo']];
+		const result = response({}, { all }).headers.entries();
+		expect(result).toEqual(all);
+	});
+
+	it('returns header keys', () => {
+		const result = response({}, { keys: ['x-foo'] }).headers.keys();
+		expect(result).toEqual(['x-foo']);
+	});
+
+	it('returns headers has', () => {
+		const raw = { 'x-foo': 'bar', 'x-baz': 'boo' };
+		const test = response({}, { raw }).headers;
+		expect(test.has('x-foo')).toBe(true);
+	});
+});