.

qwen/nodejs/node_modules/@sinonjs/commons/lib/function-name.js

@@ -0,0 +1,28 @@
+"use strict";
+
+/**
+ * Returns a display name for a function
+ * @param  {Function} func
+ * @returns {string}
+ */
+module.exports = function functionName(func) {
+    if (!func) {
+        return "";
+    }
+
+    try {
+        return (
+            func.displayName ||
+            func.name ||
+            // Use function decomposition as a last resort to get function
+            // name. Does not rely on function decomposition to work - if it
+            // doesn't debugging will be slightly less informative
+            // (i.e. toString will say 'spy' rather than 'myFunc').
+            (String(func).match(/function ([^\s(]+)/) || [])[1]
+        );
+    } catch (e) {
+        // Stringify may fail and we might get an exception, as a last-last
+        // resort fall back to empty string.
+        return "";
+    }
+};