Simpler sample

Author: MichalCz

samples/crypto-prices/index.ts

@@ -12,16 +12,20 @@ async function defer(interval: number) {
  * @param _stream - dummy input stream
  * @param currency currency (default: 'BTC')
  * @param baseCurrency currency (default: 'USD')
+ * @param interval how often to check
  */
-const app: ReadableApp<string> = function(_stream, currency = "BTC", baseCurrency = "USD", interval = 3000) {
-    return async function* () {
-        while (true) {
-            const ref = defer(interval);
-            const data = await fetch(`https://api.coinbase.com/v2/prices/${currency}-${baseCurrency}/spot`);
-            yield JSON.stringify(await data.json()) + "\r\n";
-            await ref;
-        }
-    };
+const app: ReadableApp<string> = async function* (
+    _stream, 
+    currency = "BTC", 
+    baseCurrency = "USD", 
+    interval = 3000
+) {
+    while (true) {
+        const ref = defer(interval);
+        const data = await fetch(`https://api.coinbase.com/v2/prices/${currency}-${baseCurrency}/spot`);
+        yield JSON.stringify(await data.json()) + "\r\n";
+        await ref;
+    }
 };
 
 export default app;