First cut at snippets for instrumenting RTDB and Firestore.

Author: markarndt

database/emulator-suite.js

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+
+
+export async function onDocumentReady() {
+
+  //[START rtdb_emulator_connect]
+  let firebaseConfig = {
+    // Point to the RTDB emulator running on localhost.
+    // Here we supply database namespace 'foo'.
+    databaseURL: "http://localhost:9000?ns=foo"
+  }
+
+  var myApp = firebase.initializeApp(firebaseConfig);
+  const db = myApp.database();
+  // [END rtdb_emulator_connect]
+}

firestore/emulator-suite.js

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+
+
+export async function onDocumentReady(firebaseApp) {
+
+  //[START fs_emulator_connect]
+  // firebasApp previously initialized using firebase.initializeApp()
+  const db = firebaseApp.firestore();
+  if (location.hostname === "localhost") {
+    db.settings({
+      host: "localhost:8081",
+      ssl: false
+    });
+  }
+  // [END fs_emulator_connect]
+}