diff --git a/dist/index.js b/dist/index.js
index 19d5fc2..a46abe5 100644
--- a/dist/index.js
+++ b/dist/index.js
@@ -97933,7 +97933,7 @@ class NixInstallerAction {
             executionEnv.NIX_INSTALLER_SSL_CERT_FILE = this.sslCertFile;
         }
         executionEnv.NIX_INSTALLER_DIAGNOSTIC_ENDPOINT =
-            this.idslib.getDiagnosticsUrl()?.toString() || "";
+            this.idslib.getDiagnosticsUrl()?.toString() ?? "";
         // TODO: Error if the user uses these on not-MacOS
         if (this.macEncrypt !== null) {
             if (runnerOs !== "macOS") {
@@ -98383,7 +98383,7 @@ class NixInstallerAction {
             if (job === undefined) {
                 return "no-jobs";
             }
-            const outcomes = (job.steps || []).map((j) => j.conclusion || "unknown");
+            const outcomes = (job.steps ?? []).map((j) => j.conclusion ?? "unknown");
             // Possible values: success, failure, cancelled, or skipped
             // from: https://docs.github.com/en/actions/learn-github-actions/contexts
             if (outcomes.includes("failure")) {
diff --git a/dist/main.js b/dist/main.js
index e3726fb..a202cc8 100644
--- a/dist/main.js
+++ b/dist/main.js
@@ -269,7 +269,7 @@ class NixInstallerAction {
             executionEnv.NIX_INSTALLER_SSL_CERT_FILE = this.sslCertFile;
         }
         executionEnv.NIX_INSTALLER_DIAGNOSTIC_ENDPOINT =
-            this.idslib.getDiagnosticsUrl()?.toString() || "";
+            this.idslib.getDiagnosticsUrl()?.toString() ?? "";
         // TODO: Error if the user uses these on not-MacOS
         if (this.macEncrypt !== null) {
             if (runnerOs !== "macOS") {
@@ -719,7 +719,7 @@ class NixInstallerAction {
             if (job === undefined) {
                 return "no-jobs";
             }
-            const outcomes = (job.steps || []).map((j) => j.conclusion || "unknown");
+            const outcomes = (job.steps ?? []).map((j) => j.conclusion ?? "unknown");
             // Possible values: success, failure, cancelled, or skipped
             // from: https://docs.github.com/en/actions/learn-github-actions/contexts
             if (outcomes.includes("failure")) {
diff --git a/src/main.ts b/src/main.ts
index 4619072..085a246 100644
--- a/src/main.ts
+++ b/src/main.ts
@@ -360,7 +360,7 @@ class NixInstallerAction {
     }
 
     executionEnv.NIX_INSTALLER_DIAGNOSTIC_ENDPOINT =
-      this.idslib.getDiagnosticsUrl()?.toString() || "";
+      this.idslib.getDiagnosticsUrl()?.toString() ?? "";
 
     // TODO: Error if the user uses these on not-MacOS
     if (this.macEncrypt !== null) {
@@ -921,7 +921,7 @@ class NixInstallerAction {
         return "no-jobs";
       }
 
-      const outcomes = (job.steps || []).map((j) => j.conclusion || "unknown");
+      const outcomes = (job.steps ?? []).map((j) => j.conclusion ?? "unknown");
 
       // Possible values: success, failure, cancelled, or skipped
       // from: https://docs.github.com/en/actions/learn-github-actions/contexts