persist lnurl data between server restarts

1 files changed, 18 insertions, 0 deletions

diff --git a/lib/persist.js b/lib/persist.js
new file mode 100644
index 00000000..24d00693
--- /dev/null
+++ b/lib/persist.js
@@ -0,0 +1,18 @@
+fs = require("fs");
+
+module.exports = (path, initial = {}) => {
+  try {
+    return require("../" + path);
+  } catch {
+    return new Proxy(initial, {
+      set(obj, prop, value) {
+        fs.writeFileSync(
+          path,
+          JSON.stringify({ ...obj, [prop]: value }, null, 2),
+          "utf-8"
+        );
+        return Reflect.set(...arguments);
+      }
+    });
+  }
+};