Add fetch to window

Fixes #41

package-lock.json

@@ -1898,6 +1898,14 @@
         "capture-stack-trace": "^1.0.0"
       }
     },
+    "cross-fetch": {
+      "version": "3.0.6",
+      "resolved": "https://registry.npmjs.org/cross-fetch/-/cross-fetch-3.0.6.tgz",
+      "integrity": "sha512-KBPUbqgFjzWlVcURG+Svp9TlhA5uliYtiNx/0r8nv0pdypeQCRJ9IaSIc3q/x3q8t3F75cHuwxVql1HFGHCNJQ==",
+      "requires": {
+        "node-fetch": "2.6.1"
+      }
+    },
     "cross-spawn": {
       "version": "5.1.0",
       "resolved": "https://registry.npmjs.org/cross-spawn/-/cross-spawn-5.1.0.tgz",
@@ -5277,6 +5285,11 @@
       "integrity": "sha512-1nh45deeb5olNY7eX82BkPO7SSxR5SSYJiPTrTdFUVYwAl8CKMA5N9PjTYkHiRjisVcxcQ1HXdLhx2qxxJzLNQ==",
       "dev": true
     },
+    "node-fetch": {
+      "version": "2.6.1",
+      "resolved": "https://registry.npmjs.org/node-fetch/-/node-fetch-2.6.1.tgz",
+      "integrity": "sha512-V4aYg89jEoVRxRb2fJdAg8FHvI7cEyYdVAh94HH0UIK8oJxUfkjlDQN9RbMx+bEjP7+ggMiFRprSti032Oipxw=="
+    },
     "normalize-package-data": {
       "version": "2.4.0",
       "resolved": "https://registry.npmjs.org/normalize-package-data/-/normalize-package-data-2.4.0.tgz",

package.json

@@ -35,6 +35,7 @@
   },
   "homepage": "https://github.com/lukechilds/window#readme",
   "dependencies": {
+    "cross-fetch": "3.0.6",
     "jsdom": "13.2.0"
   },
   "devDependencies": {

src/index.js

@@ -1,4 +1,5 @@
 const { JSDOM, ResourceLoader } = require('jsdom');
+const fetch = require('cross-fetch');
 
 // Class to return a window instance.
 // Accepts a jsdom config object.
@@ -10,8 +11,10 @@ module.exports = class Window {
 			strictSSL,
 			userAgent
 		});
-		return (new JSDOM('', Object.assign(jsdomConfig, {
+		const win = (new JSDOM('', Object.assign(jsdomConfig, {
 			resources
 		}))).window;
+		win.fetch = fetch;
+		return win;
 	}
 };

test/fixtures/expectedProperties.json

@@ -216,6 +216,7 @@
   "document",
   "external",
   "focus",
+  "fetch",
   "frameElement",
   "frames",
   "getComputedStyle",

test/unit.js

@@ -21,3 +21,8 @@ test('properties haven\'t changed', t => {
 
 	t.deepEqual(expectedProperties.sort(), properties.sort());
 });
+
+test('if fetch is available', t => {
+	const window = new Window();
+	t.true(typeof window.fetch === 'function');
+});