refactor(fhir): improve API response handling and fix test failures

Configured fhirStore requests with responseType: 'json' for automatic parsing, resolving Node 20 ESM/Blob issues. Additionally, fixed the members array syntax in IAM policy payloads.

Author: angelcaamal

healthcare/fhir/createFhirResource.js

@@ -30,6 +30,7 @@ function main(
       scopes: ['https://www.googleapis.com/auth/cloud-platform'],
     }),
     headers: {'Content-Type': 'application/fhir+json'},
+    responseType: 'json',
   });
 
   async function createFhirResource() {

healthcare/fhir/getFhirResourceHistory.js

@@ -30,6 +30,7 @@ const main = (
     auth: new google.auth.GoogleAuth({
       scopes: ['https://www.googleapis.com/auth/cloud-platform'],
     }),
+    responseType: 'json',
   });
 
   const getFhirResourceHistory = async () => {

healthcare/fhir/listFhirResourceHistory.js

@@ -29,6 +29,7 @@ const main = (
     auth: new google.auth.GoogleAuth({
       scopes: ['https://www.googleapis.com/auth/cloud-platform'],
     }),
+    responseType: 'json',
   });
 
   const listFhirResourceHistory = async () => {

healthcare/fhir/searchFhirResourcesPost.js

@@ -44,11 +44,24 @@ const main = (
     // Patient with the last name "Smith", set resourceType to "Patient" and
     // specify the following params:
     // params = {'family:exact' : 'Smith'};
-    const client = await auth.getClient();
-    const response = await client.request({url, method: 'POST', params});
-    const resources = response.data.entry;
-    console.log(`Resources found: ${resources.length}`);
-    console.log(JSON.stringify(resources, null, 2));
+
+    try {
+      const client = await auth.getClient();
+      const response = await client.request({
+        url,
+        method: 'POST',
+        params,
+        responseType: 'json',
+      });
+      const resources = response.data.entry;
+      console.log(`Resources found: ${resources.length}`);
+      console.log(JSON.stringify(resources, null, 2));
+    } catch (error) {
+      console.error(
+        `Error searching ${resourceType} resources:`,
+        error.response ? error.response.data : error.message
+      );
+    }
   };
 
   searchFhirResourcesPost();

healthcare/fhir/setFhirStoreIamPolicy.js

@@ -46,7 +46,7 @@ const main = (
         policy: {
           bindings: [
             {
-              members: member,
+              members: [member],
               role: role,
             },
           ],