Do not display a scary message if summary is empty

src/commands/query.mjs

@@ -110,7 +110,10 @@ async function queryCommand(argv) {
     // If performance hints are enabled, print the summary to stderr.
     // This is only supported in v10.
     if ((summary || performanceHints) && apiVersion === "10") {
-      logger.stderr(formatQuerySummary(results.summary));
+      const formattedSummary = formatQuerySummary(results.summary);
+      if (formattedSummary) {
+        logger.stderr(formattedSummary);
+      }
     }
 
     const output = formatQueryResponse(results, {

src/commands/shell.mjs

@@ -188,7 +188,10 @@ async function buildCustomEval(argv) {
         });
 
         if ((summary || performanceHints) && apiVersion === "10") {
-          logger.stdout(formatQuerySummary(res.summary));
+          const formattedSummary = formatQuerySummary(res.summary);
+          if (formattedSummary) {
+            logger.stdout(formattedSummary);
+          }
         }
       } catch (err) {
         logger.stderr(formatError(err, { apiVersion, raw, color }));

src/lib/command-helpers.mjs

@@ -228,14 +228,14 @@ const COMMON_CONFIGURABLE_QUERY_OPTIONS = {
   summary: {
     type: "boolean",
     description:
-      "Output the summary field of the API response. Only applies to v10 queries.",
+      "Output the summary field of the API response or nothing when its empty. Only applies to v10 queries.",
     default: false,
     group: "API:",
   },
   performanceHints: {
     type: "boolean",
     description:
-      "Output the performance hints for the current query. Only applies to v10 queries.",
+      "Output the performance hints for the current query or nothing when no hints are available. Only applies to v10 queries.",
     default: false,
     group: "API:",
   },

src/lib/fauna-client.mjs

@@ -138,7 +138,7 @@ export const formatQueryResponse = (
  */
 export const formatQuerySummary = (summary) => {
   if (!summary || typeof summary !== "string") {
-    return "No summary returned.";
+    return "";
   }
 
   try {

test/shell.mjs

@@ -323,7 +323,8 @@ describe("shell", function () {
 
     it("can display performance hints", async function () {
       runQueryFromString.resolves({
-        summary: "performance_hint: use a more efficient query\n<diagnostics>",
+        summary:
+          "performance_hint: use a more efficient query\n1 | use a more efficient query",
         data: "fql",
       });