init source

node_modules/sequelize-pool/lib/Deferred.js

@@ -0,0 +1,45 @@
+"use strict";
+
+const { TimeoutError } = require("./TimeoutError");
+
+class Deferred {
+  constructor() {
+    this._timeout = null;
+    this._promise = new Promise((resolve, reject) => {
+      this._reject = reject;
+      this._resolve = resolve;
+    });
+  }
+
+  registerTimeout(timeoutInMillis, callback) {
+    if (this._timeout) return;
+
+    this._timeout = setTimeout(() => {
+      callback();
+      this.reject(new TimeoutError("Operation timeout"));
+    }, timeoutInMillis);
+  }
+
+  _clearTimeout() {
+    if (!this._timeout) return;
+
+    clearTimeout(this._timeout);
+    this._timeout = null;
+  }
+
+  resolve(value) {
+    this._clearTimeout();
+    this._resolve(value);
+  }
+
+  reject(error) {
+    this._clearTimeout();
+    this._reject(error);
+  }
+
+  promise() {
+    return this._promise;
+  }
+}
+
+module.exports = Deferred;