Util for optional/required inputs

lib/util.js

@@ -215,7 +215,7 @@ async function createStatusReportBase(actionName, status, actionStartedAt, cause
     if (status === "success" || status === "failure" || status === "aborted") {
         statusReport.completed_at = new Date().toISOString();
     }
-    const matrix = core.getInput("matrix");
+    const matrix = getOptionalInput("matrix");
     if (matrix) {
         statusReport.matrix_vars = matrix;
     }
@@ -383,4 +383,24 @@ function getCodeQLDatabasePath(tempDir, language) {
     return path.resolve(getCodeQLDatabasesDir(tempDir), language);
 }
 exports.getCodeQLDatabasePath = getCodeQLDatabasePath;
+/**
+ *  Wrapper for core.getInput. Returns undefined if the requested
+ *  input is not specified.
+ */
+function getOptionalInput(name) {
+    const value = core.getInput(name);
+    if (value === "") {
+        return undefined;
+    }
+    return value;
+}
+exports.getOptionalInput = getOptionalInput;
+/**
+ * Wrapper for core.getInput. Returns the requested input or
+ * throws if not defined.
+ */
+function getRequiredInput(name) {
+    return core.getInput(name, { required: true });
+}
+exports.getRequiredInput = getRequiredInput;
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