first commit

node_modules/thingies/lib/codeMutex.js

@@ -0,0 +1,21 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.codeMutex = void 0;
+/**
+ * Executes only one instance of give code at a time. If other calls come in in
+ * parallel, they get resolved to the result of the ongoing execution.
+ */
+const codeMutex = () => {
+    let result;
+    return async (code) => {
+        if (result)
+            return result;
+        try {
+            return await (result = code());
+        }
+        finally {
+            result = undefined;
+        }
+    };
+};
+exports.codeMutex = codeMutex;