fix: support env in edge runtime

README.md

@@ -25,6 +25,12 @@ https://sheets-json-api.netlify.app/1vufOODlks7O9PGak54hMNP4LWBUAoP-XB9n3VW_aw5Y
 
 The Edge Function lives in `netlify/edge-functions/opensheet.ts`.
 
+### Environment variables
+
+The function looks for a `GOOGLE_API_KEY` value using `process.env` in Node or
+`Deno.env.get` in Netlify's Edge runtime. When the variable is absent, a default
+API key is used.
+
 ### Running tests
 
 ```sh

netlify/edge-functions/opensheet.ts

@@ -3,7 +3,10 @@
 import type { Context } from "@netlify/edge-functions";
 
 export default async function handler(request: Request, context: Context) {
-  const GOOGLE_API_KEY = process.env.GOOGLE_API_KEY?.trim() || "AIzaSyC6y93Jo0fA1GH54L7VOkJzgZkiaXSSOOU";
+  const GOOGLE_API_KEY =
+    ((globalThis as any).process?.env?.GOOGLE_API_KEY ??
+      (globalThis as any).Deno?.env?.get("GOOGLE_API_KEY"))?.trim() ||
+    "AIzaSyC6y93Jo0fA1GH54L7VOkJzgZkiaXSSOOU";
   if (!GOOGLE_API_KEY) {
     return error("Missing GOOGLE_API_KEY environment variable", 500);
   }

test/opensheet.test.ts

@@ -39,3 +39,33 @@ test('falls back to static content on root path', async () => {
   const res = await handler(req, { next: () => nextResponse, waitUntil: () => {} } as any);
   assert.strictEqual(res, nextResponse);
 });
+
+test('uses Deno env when process env missing', async () => {
+  const originalKey = process.env.GOOGLE_API_KEY;
+  delete process.env.GOOGLE_API_KEY;
+
+  (globalThis as any).Deno = { env: { get: () => 'FAKE_KEY' } };
+  (globalThis as any).caches = {
+    default: {
+      async match() {
+        return undefined;
+      },
+      async put() {},
+    },
+  };
+
+  const originalFetch = globalThis.fetch;
+  globalThis.fetch = async () =>
+    new Response(
+      JSON.stringify({ values: [["headline"], ["It's working!"]] })
+    );
+
+  const req = new Request('https://example.com/test-sheet/Sheet1');
+  const res = await handler(req, context);
+  const data = await res.json();
+  assert.deepStrictEqual(data, [{ headline: "It's working!" }]);
+
+  globalThis.fetch = originalFetch;
+  delete (globalThis as any).Deno;
+  process.env.GOOGLE_API_KEY = originalKey;
+});