add file

node_modules/unfetch/src/index.d.ts

@@ -0,0 +1,17 @@
+import {
+  Body as NodeBody,
+  Headers as NodeHeaders,
+  Request as NodeRequest,
+  Response as NodeResponse
+} from "node-fetch";
+
+declare namespace unfetch {
+  export type IsomorphicHeaders = Headers | NodeHeaders;
+  export type IsomorphicBody = Body | NodeBody;
+  export type IsomorphicResponse = Response | NodeResponse;
+  export type IsomorphicRequest = Request | NodeRequest
+}
+
+declare const unfetch: typeof fetch;
+
+export default unfetch;

node_modules/unfetch/src/index.mjs

@@ -0,0 +1,47 @@
+export default function(url, options) {
+	options = options || {};
+	return new Promise( (resolve, reject) => {
+		const request = new XMLHttpRequest();
+		const keys = [];
+		const all = [];
+		const headers = {};
+
+		const response = () => ({
+			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,
+			headers: {
+				keys: () => keys,
+				entries: () => all,
+				get: n => headers[n.toLowerCase()],
+				has: n => n.toLowerCase() in headers
+			}
+		});
+
+		request.open(options.method || 'get', url, true);
+
+		request.onload = () => {
+			request.getAllResponseHeaders().replace(/^(.*?):[^\S\n]*([\s\S]*?)$/gm, (m, key, value) => {
+				keys.push(key = key.toLowerCase());
+				all.push([key, value]);
+				headers[key] = headers[key] ? `${headers[key]},${value}` : value;
+			});
+			resolve(response());
+		};
+
+		request.onerror = reject;
+
+		request.withCredentials = options.credentials=='include';
+
+		for (const i in options.headers) {
+			request.setRequestHeader(i, options.headers[i]);
+		}
+
+		request.send(options.body || null);
+	});
+}